{"title":"ABAC Duplex Air Compressors","description":"\u003cp\u003eA duplex air compressor puts two complete motor and pump assemblies on a single receiver. The controller alternates between them so the running hours stay even, and it can bring both online together when demand spikes. The reason shops buy one is redundancy: a pump or a motor can be pulled for service while the other side keeps the air up, and nobody goes home early.\u003c\/p\u003e\u003ch3\u003eWhat is in this range\u003c\/h3\u003e\u003cp\u003eABAC builds its duplex machines on 120 and 200 gallon horizontal ASME tanks, from 10 to 20 HP of combined power, delivering 32 to 64 CFM at a maximum 175 PSI. There are two pump families to choose between:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid Pro duplex:\u003c\/strong\u003e two T39 two-stage pumps that pair an aluminum block with cast iron cylinders. Lighter and less expensive at the same horsepower, and the right call where the air draw is intermittent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIronman duplex:\u003c\/strong\u003e two fully cast iron C1 or C2 two-stage pumps. Heavier, and built for the long duty cycles that a busy shop or a production line imposes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizing one\u003c\/h3\u003e\u003cp\u003eAdd up the CFM the tools actually draw at the same time, then add about 30 percent of headroom. A duplex is not primarily a way to buy more airflow, because a single machine of the same total horsepower usually costs less. It is a way to buy uptime. If a day without air costs more than the price difference, buy the duplex. If it does not, a simplex on a large tank is the better value, and the \u003ca href=\"\/collections\/abac-ironman-air-compressors\"\u003eIronman\u003c\/a\u003e and \u003ca href=\"\/collections\/abac-hybrid-pro-air-compressors\"\u003eHybrid Pro\u003c\/a\u003e ranges cover the same horsepower in single pump builds.\u003c\/p\u003e\u003cp\u003eCheck the panel before ordering: these machines run on 230V single phase at the smaller end and 230V, 460V or 575V three phase as the horsepower climbs, and the voltage is set at build. Pair any of them with a refrigerated dryer from the \u003ca href=\"\/collections\/abac-cool-refrigerated-air-dryers\"\u003eABAC COOL range\u003c\/a\u003e if the air goes to paint, tires or plasma cutting. See the full brand in \u003ca href=\"\/collections\/abac-air-compressors\"\u003eABAC air compressors\u003c\/a\u003e. ABAC is part of the Atlas Copco group.\u003c\/p\u003e","products":[{"product_id":"abac-ab5-duplex-10-hp-120-gallon-horizontal-air-compressor","title":"ABAC AB5-21120D 10 HP Two-Stage Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 33.2 CFM","description":"\u003cp\u003eThe ABAC AB5-21120D mounts two independent 5 HP motor and pump assemblies on a single 120 gallon horizontal ASME tank. The controller alternates between pumps to even out wear, or runs both together when demand spikes, delivering a combined 33.2 CFM (16.6 CFM per pump) at a maximum 175 PSI. If one pump ever needs service, the other keeps the shop running: redundancy that a single-pump compressor simply cannot offer.\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: AB5-21120D 230V single-phase (part 8090304224), AB5-23120D 230V three-phase (part 8090304232), AB5-43120D 460V three-phase (part 8090304240)\u003c\/li\u003e\n\u003cli\u003ePower: 10 HP total, two 5 HP motors\u003c\/li\u003e\n\u003cli\u003ePumps: two T39 two-stage hybrid pumps, aluminum with cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 33.2 CFM combined, 16.6 CFM per pump at max pressure\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003eAlternating or simultaneous pump operation for uptime and peak capacity\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel settings\u003c\/li\u003e\n\u003cli\u003eAluminum heads and aftercoolers, fully enclosed belt guards\u003c\/li\u003e\n\u003cli\u003eDual start\/stop pressure switch controls, magnetic starters\u003c\/li\u003e\n\u003cli\u003eWeight: 892 lbs | Dimensions: 25 x 79 x 55 in\u003c\/li\u003e\n\u003cli\u003eWarranty: 2 year full, assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eWithin the Hybrid Pro duplex range the only variable is capacity, because the footprint does not change. The \u003ca href=\"\/products\/abac-ab7-duplex-15-hp-120-gallon-horizontal-air-compressor\"\u003eAB7-21120D\u003c\/a\u003e pairs two 7.5 HP pumps for 44.6 CFM on the same 120 gallon horizontal tank and the same 25 x 79 x 55 in floor space, at 910 lbs against this machine's 892. Against a single machine, the \u003ca href=\"\/products\/abac-ab5-2180vp-5-hp-80-gallon-vertical-two-stage-air-compressor\"\u003eAB5-2180VP\u003c\/a\u003e runs one 5 HP T39 pump at 16.6 CFM on an 80 gallon vertical tank, so the duplex doubles that output and adds the fallback a single-pump compressor cannot give you. If the duty cycle calls for full cast iron rather than the hybrid T39, the \u003ca href=\"\/products\/abac-abc5-duplex-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC5-21120HD Ironman duplex\u003c\/a\u003e is also 10 HP on 120 gallons, at 32 CFM with C1 cast iron pumps.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eABAC positions the Hybrid Pro Duplex for work with a high variation in air demand, anywhere from intermittent duty up to 100 percent duty: hammering, spraying, grinding, fastening, orbital sanding and general equipment operation. Those are surge loads rather than steady ones, which is exactly where a duplex earns its price. One pump carries the baseline and the second joins only when the line calls for it, so neither motor spends the day short cycling the way a single large compressor would. Production shops, multi-bay service centers and any floor where an air outage stops the whole operation are the usual homes for this machine. Where the panel offers three-phase, the 230V or 460V three-phase build is the better long term choice, because a three-phase motor draws less current per leg and runs cooler under a hard duty cycle.\u003c\/p\u003e\u003cp\u003eTwo-stage compression sends warm, wet air down the line, so size a refrigerated dryer above the compressor's output rather than to the pipe. The \u003ca href=\"\/products\/abac-cool-35-refrigerated-air-dryer-115v\"\u003eABAC COOL 35\u003c\/a\u003e is the smallest dryer in the COOL range that covers 33.2 CFM, and the \u003ca href=\"\/products\/abac-cool-50-refrigerated-air-dryer-115v\"\u003eCOOL 50\u003c\/a\u003e leaves room to spare in a warm shop. Part of ABAC's 2-Stage Hybrid Pro Duplex range from the Atlas Copco group. Browse the rest of our \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e and our \u003ca href=\"\/collections\/refrigerated-air-dryers\"\u003erefrigerated air dryers\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V Single-Phase","offer_id":54557510730003,"sku":"8090304224","price":7041.0,"currency_code":"USD","in_stock":true},{"title":"230V Three-Phase","offer_id":54557510762771,"sku":"8090304232","price":6838.0,"currency_code":"USD","in_stock":true},{"title":"460V Three-Phase","offer_id":54557510795539,"sku":"8090304240","price":7136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-ab5-duplex-120-gallon-horizontal-air-compressor.png?v=1786378023"},{"product_id":"abac-ab7-duplex-15-hp-120-gallon-horizontal-air-compressor","title":"ABAC AB7-21120D 15 HP Two-Stage Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 44.6 CFM","description":"\u003cp\u003eThe ABAC AB7 Duplex is the largest piston duplex in ABAC's Hybrid Pro range: two independent 7.5 HP motor and pump assemblies on one 120 gallon horizontal ASME tank, producing a combined 44.6 CFM at a maximum 175 PSI. Alternating operation spreads runtime evenly across both pumps, while simultaneous operation covers peak demand that would overwhelm a single-pump machine. The second reason shops choose a duplex is redundancy: if one pump comes out for service, the other keeps the line pressurized instead of shutting the floor down. Choose 230V single-phase (AB7-21120D), 230V three-phase (AB7-23120D), or 460V three-phase (AB7-43120D).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: AB7-21120D 230V single-phase (part 8090304257), AB7-23120D 230V three-phase (part 8090304265), AB7-43120D 460V three-phase (part 8090304273)\u003c\/li\u003e\n\u003cli\u003ePower: 15 HP total, two 7.5 HP motors, 60 Hz\u003c\/li\u003e\n\u003cli\u003ePumps: two T39 two-stage pumps, hybrid aluminum and cast iron construction\u003c\/li\u003e\n\u003cli\u003eAir delivery: 22.23 CFM per pump, 44.6 CFM combined with both sides running\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003eAlternating or simultaneous pump operation for uptime and peak capacity\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel with adjustable control parameters\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003cli\u003eWeight: 910 lbs | Dimensions: 25 x 79 x 55 in\u003c\/li\u003e\n\u003cli\u003eAssembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy a duplex instead of one bigger compressor\u003c\/h3\u003e\u003cp\u003eA duplex buys two things a single machine cannot. The first is uptime. A failed pump, a belt change or an oil service takes half the capacity offline instead of all of it, so the floor keeps working while the other side carries the load. The second is staging. Under light or intermittent demand the control alternates the two sides and shares the hours between them rather than loading one pump all day; when demand climbs, both sides run together for the full 44.6 CFM. Each pump then runs cooler, rests longer and reaches its service intervals later than one large pump doing the same total work. That is also why the published rating is 22.23 CFM per side: the machine is designed to spend most of its life running on one pump and to call on the second only when the line asks for it.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eWithin the Hybrid Pro duplex range the choice is capacity on an identical footprint. The \u003ca href=\"\/products\/abac-ab5-duplex-10-hp-120-gallon-horizontal-air-compressor\"\u003eAB5-21120D\u003c\/a\u003e pairs two 5 HP pumps for 33.2 CFM on the same 120 gallon horizontal tank and the same 25 x 79 x 55 in floor space, so the AB7 buys roughly eleven more CFM without asking for another square foot of shop, at 910 lbs against 892. Against a single machine, the \u003ca href=\"\/products\/abac-ab7-7-5-hp-80-gallon-vertical-two-stage-air-compressor\"\u003eAB7-2180V\u003c\/a\u003e runs one 7.5 HP T39 pump at 22.2 CFM; the duplex doubles that and adds the fallback a single-pump compressor cannot give you. If the duty cycle is hard enough to want full cast iron rather than the hybrid T39, the \u003ca href=\"\/products\/abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC7-21120HD Ironman duplex\u003c\/a\u003e is also 15 HP on 120 gallons, at 42 CFM with C1 cast iron pumps, and the \u003ca href=\"\/products\/abac-abc7-v2-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC7-2112DH2P\u003c\/a\u003e reaches 52 CFM at the same 15 HP with C2 pumps. Decide on duty cycle first and CFM second: the hybrid pump is the right answer for a shop that works in bursts, the cast iron pump for one that runs air most of the day.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eHigh-demand fabrication shops, collision centers running more than one booth, tire and fleet service bays, and industrial plants where sandblasting, plasma cutting, or several pneumatic stations draw at the same time. Those loads are the case for a duplex: demand arrives in surges rather than steadily, so one pump carries the baseline and the second joins only when the line calls for it, which keeps both motors off the short-cycling that shortens a single large compressor's life. ABAC builds the Hybrid Pro range for professional settings, metal and wood workshops and auto body and repair shops among them.\u003c\/p\u003e\u003ch3\u003ePower, installation and air quality\u003c\/h3\u003e\u003cp\u003eTake three-phase power if the panel has it. A three-phase motor draws less current per leg, starts easier and runs cooler on a compressor that cycles all day, and the 460V build keeps the wire size down on a long run from the panel. Each side draws its own load, so size the circuit for both pumps running together even though the control normally alternates them. At 79 inches long the horizontal tank runs along a wall and keeps the overhead clear, but leave room at the belt guards and flywheels for cooling air and service access, and plan the drain, because a 120 gallon receiver collects real water.\u003c\/p\u003e\u003cp\u003eTwo-stage compression still sends warm, wet air down the line, so size a refrigerated dryer above the compressor's output rather than to the pipe. At 50 CFM the \u003ca href=\"\/products\/abac-cool-50-refrigerated-air-dryer-115v\"\u003eABAC COOL 50\u003c\/a\u003e is the smallest dryer in the COOL range that covers 44.6 CFM with headroom, and it is worth having ahead of a paint booth, a plasma table or any tool line you would rather not run water through. Part of ABAC's 2-Stage Hybrid Pro Duplex range from the Atlas Copco group. Browse the rest of our \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e and our \u003ca href=\"\/collections\/refrigerated-air-dryers\"\u003erefrigerated air dryers\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V Single-Phase","offer_id":54557511516435,"sku":"8090304257","price":7416.0,"currency_code":"USD","in_stock":true},{"title":"230V Three-Phase","offer_id":54557511549203,"sku":"8090304265","price":7416.0,"currency_code":"USD","in_stock":true},{"title":"460V Three-Phase","offer_id":54557511581971,"sku":"8090304273","price":7416.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-ab7-duplex-120-gallon-horizontal-air-compressor.png?v=1786378024"},{"product_id":"abac-abc5-duplex-10-hp-120-gallon-horizontal-ironman-air-compressor","title":"ABAC ABC5-21120HD 10 HP Ironman Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 32 CFM C1 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC5-21120HD is the Ironman duplex built around redundancy: two independent 5 HP motor and pump assemblies on a single 120 gallon horizontal ASME tank. Each side runs a C1 two-stage cast iron pump rated 16 CFM, for 32 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex rather than buying one larger simplex machine. Choose 230V single-phase (ABC5-21120HD), 230V three-phase (ABC5-23120HD), or 460V three-phase (ABC5-43120HD).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC5-21120HD \/ ABC5-23120HD \/ ABC5-43120HD\u003c\/li\u003e\n\u003cli\u003ePower: 10 HP total (2 x 5 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C1 two-stage pumps, cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 32 CFM combined (16 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/1\/60, 230\/3\/60, or 460\/3\/60\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003cli\u003eWeight: 1120 lbs\u003c\/li\u003e\n\u003cli\u003eDimensions: 25 x 79 x 52 in (230V single-phase), 25 x 79 x 55 in (three-phase)\u003c\/li\u003e\n\u003cli\u003eAssembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy a duplex instead of one bigger compressor\u003c\/h3\u003e\u003cp\u003eA duplex buys two things a single machine cannot. The first is uptime: a failed pump, a belt change, or an oil service takes half the capacity offline instead of all of it, so the floor keeps working. The second is staging. Under light or intermittent demand only one side needs to run, and an alternating control shares the hours between the two pumps rather than loading one of them all day. Each pump then runs cooler, rests longer, and reaches its service intervals later than a single pump doing the same total work. Both sides use the fully cast iron C1 pump of the Ironman range, where the extra mass absorbs heat and damps vibration through long run times, and both are two-stage, so 175 PSI arrives in two compression steps with cooling in between instead of one hot single-stage squeeze.\u003c\/p\u003e\u003ch3\u003eSizing and how it compares\u003c\/h3\u003e\u003cp\u003eSize on CFM, not on horsepower. 32 CFM covers a multi-bay shop running impact wrenches, ratchets, grinders and a spray gun at the same time. If the duty is the same but cast iron is more pump than the work needs, the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-ab5-duplex-10-hp-120-gallon-horizontal-air-compressor\"\u003eAB5-21120D\u003c\/a\u003e is the hybrid T39 pump duplex on the same 120 gallon platform. Stepping up, the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e15 HP ABC7-21120HD\u003c\/a\u003e pairs two 7.5 HP sides for 42 CFM, and the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc10-duplex-20-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e20 HP ABC10-23120HD\u003c\/a\u003e reaches 64 CFM. If redundancy is not the point and 16 CFM is enough, the single-pump \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc5-5-hp-80-gallon-vertical-ironman-air-compressor\"\u003e5 HP ABC5-2180V\u003c\/a\u003e does the same work on an 80 gallon vertical tank in a far smaller footprint.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eProduction shops, multi-bay service and tire centers, fabrication and welding bays, body shops, and fleet maintenance operations where several air tools draw at once and a compressor going down stops the whole floor. It also suits a facility with a process that cannot tolerate an air outage, where the second pump is insurance rather than extra capacity. At 79 inches long the horizontal tank runs along a wall and keeps the overhead clear.\u003c\/p\u003e\u003ch3\u003ePower, installation and air quality\u003c\/h3\u003e\u003cp\u003eTake three-phase power if the panel has it, since three-phase motors start easier and run cooler on a compressor that cycles all day, and the 460V build keeps the wire size down on a long run. Each side draws its own load, so size the circuit for both running together even if the control normally alternates them. Leave clearance around the belt guards and the flywheels for cooling air and for service access, and plan the drain: a 120 gallon receiver collects real water. Air leaves any piston compressor hot and saturated, so pair it with a \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/refrigerated-air-dryers\"\u003erefrigerated air dryer\u003c\/a\u003e ahead of a paint booth, a plasma table, or any tool line you would rather not run water through.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/atlas-copco\"\u003eAtlas Copco group\u003c\/a\u003e. See the rest of our \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/5-to-15-hp-piston-air-compressors\"\u003e5 to 15 HP piston air compressors\u003c\/a\u003e and the full \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/piston-air-compressors\"\u003episton air compressor\u003c\/a\u003e range.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 1-Phase","offer_id":54698452451603,"sku":"8090303721","price":7271.0,"currency_code":"USD","in_stock":true},{"title":"230V 3-Phase","offer_id":54698452484371,"sku":"8090303739","price":7271.0,"currency_code":"USD","in_stock":true},{"title":"460V 3-Phase","offer_id":54698452517139,"sku":"8090303747","price":7451.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc5-duplex-120-gallon-horizontal-ironman-air-compressor.png?v=1789403336"},{"product_id":"abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor","title":"ABAC ABC7-21120HD 15 HP Ironman Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 42 CFM C1 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC7-21120HD is the Ironman duplex built for shops that cannot afford an air outage: two independent 7.5 HP motor and pump assemblies on a single 120 gallon horizontal ASME tank. Each side runs a C1 two-stage cast iron pump rated 21 CFM, for 42 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex rather than buying one larger simplex machine. Choose 230V single-phase (ABC7-21120HD), 230V three-phase (ABC7-23120HD), 460V three-phase (ABC7-43120HD), or 575V three-phase (ABC7-53120HD).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC7-21120HD \/ ABC7-23120HD \/ ABC7-43120HD \/ ABC7-53120HD\u003c\/li\u003e\n\u003cli\u003ePower: 15 HP total (2 x 7.5 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C1 two-stage pumps, cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 42 CFM combined (21 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/1\/60, 230\/3\/60, 460\/3\/60, or 575\/3\/60\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003cli\u003eAlternating control, dual control for full output, fully programmable control panel\u003c\/li\u003e\n\u003cli\u003eWeight: 1138 lbs\u003c\/li\u003e\n\u003cli\u003eDimensions: 25 x 79 x 55 in\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy a duplex instead of one bigger compressor\u003c\/h3\u003e\u003cp\u003eA duplex buys two things a single machine cannot. The first is uptime: a failed pump, a belt change, or an oil service takes half the capacity offline instead of all of it, so the floor keeps working. The second is staging. Under light or intermittent demand the alternating control runs one side at a time and shares the hours between the two pumps rather than loading one of them all day; when demand climbs, dual control brings both sides on for the full 42 CFM. Each pump then runs cooler, rests longer, and reaches its service intervals later than a single pump doing the same total work. Both sides use the fully cast iron C1 pump of the Ironman range, where the extra mass absorbs heat and damps vibration through long run times, and both are two-stage, so 175 PSI arrives in two compression steps with cooling in between instead of one hot single-stage squeeze.\u003c\/p\u003e\u003ch3\u003eSizing and how it compares\u003c\/h3\u003e\u003cp\u003eSize on CFM, not on horsepower. 42 CFM supports a busy multi-bay shop running impact wrenches, ratchets, grinders, a sandblast cabinet and a spray gun without the pressure sagging between bays. If 32 CFM is enough, the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc5-duplex-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e10 HP ABC5-21120HD\u003c\/a\u003e is the same platform with two 5 HP sides. If the duty is the same but cast iron is more pump than the work needs, the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-ab7-duplex-15-hp-120-gallon-horizontal-air-compressor\"\u003eAB7-21120D\u003c\/a\u003e is the hybrid T39 pump duplex at 15 HP. Within the Ironman range the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc7-v2-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC7-2112DH2P\u003c\/a\u003e pairs two C2 pumps for 52 CFM at the same 15 HP, and the \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc10-duplex-20-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e20 HP ABC10-23120HD\u003c\/a\u003e reaches 64 CFM. If redundancy is not the point and 21 CFM is enough, the single-pump \u003ca href=\"https:\/\/aircompressorstore.com\/products\/abac-abc7-7-5-hp-80-gallon-vertical-ironman-air-compressor\"\u003e7.5 HP ABC7-2180V\u003c\/a\u003e does the same per-side work on an 80 gallon vertical tank in a far smaller footprint.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eProduction shops, multi-bay service and tire centers, fabrication and welding bays, body shops, and fleet maintenance operations where several air tools draw at once and a compressor going down stops the whole floor. It also suits a facility with a process that cannot tolerate an air outage, where the second pump is insurance rather than extra capacity. At 79 inches long the horizontal tank runs along a wall and keeps the overhead clear.\u003c\/p\u003e\u003ch3\u003ePower, installation and air quality\u003c\/h3\u003e\u003cp\u003eTake three-phase power if the panel has it, since three-phase motors start easier and run cooler on a compressor that cycles all day, and the 460V or 575V build keeps the wire size down on a long run. Each side draws its own load, so size the circuit for both running together even if the control normally alternates them. Leave clearance around the belt guards and the flywheels for cooling air and for service access, and plan the drain: a 120 gallon receiver collects real water. Air leaves any piston compressor hot and saturated, so pair it with a \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/refrigerated-air-dryers\"\u003erefrigerated air dryer\u003c\/a\u003e ahead of a paint booth, a plasma table, or any tool line you would rather not run water through.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/atlas-copco\"\u003eAtlas Copco group\u003c\/a\u003e. See the rest of our \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/5-to-15-hp-piston-air-compressors\"\u003e5 to 15 HP piston air compressors\u003c\/a\u003e and the full \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/piston-air-compressors\"\u003episton air compressor\u003c\/a\u003e range.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 1-Phase","offer_id":54698847207699,"sku":"8090303754","price":7385.0,"currency_code":"USD","in_stock":true},{"title":"230V 3-Phase","offer_id":54698847240467,"sku":"8090303762","price":7385.0,"currency_code":"USD","in_stock":true},{"title":"460V 3-Phase","offer_id":54698847273235,"sku":"8090303770","price":7566.0,"currency_code":"USD","in_stock":true},{"title":"575V 3-Phase","offer_id":54698847306003,"sku":"8090303788","price":7747.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc7-duplex-120-gallon-horizontal-ironman-air-compressor.png?v=1789403336"},{"product_id":"abac-abc10-duplex-20-hp-120-gallon-horizontal-ironman-air-compressor","title":"ABAC ABC10-23120HD 20 HP Ironman Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 64 CFM C2 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC10 Ironman duplex mounts two independent 10 HP motor and pump assemblies on a single 120 gallon horizontal ASME tank. Each side runs a C2 two-stage cast iron pump rated 32 CFM, for 64 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex in the first place. Choose 230V three-phase (ABC10-23120HD), 460V three-phase (ABC10-43120HD), or 575V three-phase (ABC10-53120HD).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC10-23120HD \/ ABC10-43120HD \/ ABC10-53120HD\u003c\/li\u003e\n\u003cli\u003ePower: 20 HP total (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C2 two-stage pumps, cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 64 CFM combined (32 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/3\/60, 460\/3\/60, or 575\/3\/60\u003c\/li\u003e\n\u003cli\u003eShipping weight: 1302 lbs\u003c\/li\u003e\n\u003cli\u003eDimensions: 25 x 80 x 50 in\u003c\/li\u003e\n\u003cli\u003eAlternating control, so the lead pump rotates and run time is shared\u003c\/li\u003e\n\u003cli\u003eDual control, so both pumps run together when demand spikes\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow the duplex control works\u003c\/h3\u003e\u003cp\u003eThe two assemblies are not simply bolted to one tank and left to fight each other. The programmable panel alternates which pump leads, so neither side accumulates all the hours and both wear at the same rate. When demand climbs past what one pump can hold, the panel brings the second one in alongside it and the machine delivers the full 64 CFM. That is what separates a duplex from a single 20 HP machine: at light load it behaves like a 10 HP compressor and runs cool instead of short cycling a large pump, and at peak load it has the whole 64 CFM available. The same arrangement is what keeps the shop running when one side needs a valve plate or a belt, since the panel can be set to run on the healthy pump alone.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eAcross the Ironman duplex range the pump pair sets the airflow and the receiver sets how long those pumps rest between draws. The \u003ca href=\"\/products\/abac-abc5-duplex-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e10 HP ABC5-21120HD\u003c\/a\u003e pairs two C1 pumps for 32 CFM on this same 120 gallon horizontal tank, and the \u003ca href=\"\/products\/abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e15 HP ABC7-21120HD\u003c\/a\u003e reaches 42 CFM. The \u003ca href=\"\/products\/abac-abc10-duplex-20-hp-200-gallon-horizontal-ironman-air-compressor\"\u003eABC10-23200HD\u003c\/a\u003e is this identical 64 CFM pair on a 200 gallon receiver, worth the extra floor space where draws are heavy and intermittent, and it shares the same 25 x 80 in footprint on the floor. If redundancy is not the point and 32 CFM covers the floor, the single pump \u003ca href=\"\/products\/abac-abc10-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC10-23120H\u003c\/a\u003e uses the same C2 pump on the same 120 gallon tank for less money and less footprint.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eProduction shops, multi bay service centers, fabrication and welding bays, auto body shops, and fleet maintenance operations where several air tools draw at once and a compressor going down stops the whole floor. A duplex also suits a plant whose demand swings through the day: one side carries the quiet hours while the second is available for the shifts when every bay is working, instead of one large machine short cycling through both. ABAC rates the Ironman Duplex range for tire inflation, hammering, grinding, fastening, orbital sanding and running air operated equipment. The 575V option matters on older industrial services where stepping down to 460V would mean a transformer.\u003c\/p\u003e\u003ch3\u003eInstallation notes\u003c\/h3\u003e\u003cp\u003eAll three versions are three-phase only, so confirm the panel before ordering and size the feeder to the combined nameplate rather than to one motor. At 1302 lbs on a 25 x 80 in footprint the machine wants a level slab and clearance at both ends of the tank for belt guard access and for the drains. Plan a timed or automatic drain, because a 120 gallon receiver carrying 64 CFM of two-stage air collects condensate faster than anyone remembers to crack a petcock. Keep the room ventilated and give the belt guards room to breathe, since two pumps put twice the heat into the same space.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the Atlas Copco group. A duplex pair delivers the output of a larger single machine while spreading run time across two pumps, which keeps each one cooler and shortens recovery under heavy demand. Two-stage air at 175 PSI carries a shop floor's worth of moisture, so plan on a refrigerated dryer such as the \u003ca href=\"\/products\/abac-cool-100-refrigerated-air-dryer-230v\"\u003eABAC COOL 100\u003c\/a\u003e downstream of the tank, sized with headroom over the 64 CFM the pumps deliver. See the rest of our \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e and our full range of \u003ca href=\"\/collections\/air-dryers\"\u003eair dryers\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 3-Phase","offer_id":54698949312787,"sku":"8090304083","price":8765.0,"currency_code":"USD","in_stock":true},{"title":"460V 3-Phase","offer_id":54698949345555,"sku":"8090304109","price":8765.0,"currency_code":"USD","in_stock":true},{"title":"575V 3-Phase","offer_id":54698949378323,"sku":"8090304125","price":8946.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc10-duplex-120-gallon-horizontal-ironman-air-compressor.png?v=1789403336"},{"product_id":"abac-abc10-duplex-20-hp-200-gallon-horizontal-ironman-air-compressor","title":"ABAC ABC10-23200HD 20 HP Ironman Duplex Air Compressor - 200 Gallon Horizontal, 175 PSI, 64 CFM C2 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC10-23200HD Ironman duplex mounts two independent 10 HP motor and pump assemblies on a single 200 gallon horizontal ASME tank. Each side runs a C2 two-stage cast iron pump rated 32 CFM, for 64 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex in the first place. Choose 230V three-phase (ABC10-23200HD) or 460V three-phase (ABC10-43200HD).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC10-23200HD (230V) \/ ABC10-43200HD (460V)\u003c\/li\u003e\n\u003cli\u003ePower: 20 HP total (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C2 two-stage pumps, cast iron cylinders with aluminum head and aftercooler\u003c\/li\u003e\n\u003cli\u003eAir delivery: 64 CFM combined (32 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 200 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/3\/60 or 460\/3\/60\u003c\/li\u003e\n\u003cli\u003eShipping weight: 1646 lbs\u003c\/li\u003e\n\u003cli\u003eDimensions: 25 x 80 x 50 in\u003c\/li\u003e\n\u003cli\u003eAlternating control, so the lead pump rotates and run time is shared\u003c\/li\u003e\n\u003cli\u003eDual control, so both pumps run together when demand spikes\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy the 200 gallon receiver\u003c\/h3\u003e\u003cp\u003eThis is the same 64 CFM pump pair that sits on the \u003ca href=\"\/products\/abac-abc10-duplex-20-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e120 gallon ABC10-23120HD\u003c\/a\u003e, on a receiver with 80 more gallons of storage. The larger tank is worth the floor space wherever the draw is heavy and intermittent: a plasma table, a blast cabinet, or four or five bays that all reach for air at once. Stored air absorbs those peaks, so the pumps start less often, run longer when they do start, and spend more time cool. On a lighter or steadier load the 120 gallon version does the same work in a shorter footprint, and both machines ship at 25 x 80 inches on the floor.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eAcross the Ironman duplex range the pump pair sets the airflow and the tank sets how long the pumps rest between draws. The \u003ca href=\"\/products\/abac-abc5-duplex-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e10 HP ABC5-21120HD\u003c\/a\u003e pairs two C1 pumps for 32 CFM, and the \u003ca href=\"\/products\/abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e15 HP ABC7-21120HD\u003c\/a\u003e reaches 42 CFM, both on a 120 gallon horizontal tank. If redundancy is not the point and 32 CFM covers the floor, the single pump \u003ca href=\"\/products\/abac-abc10-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC10-23120H\u003c\/a\u003e uses the same C2 pump for a lower installed cost. This 200 gallon duplex is the top of the Ironman piston range, and the next step beyond it is a rotary screw rated for 100 percent duty rather than a larger piston machine.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eProduction shops, multi bay service centers, fabrication and welding bays, auto body shops, and fleet maintenance operations where several air tools draw at once and a compressor going down stops the whole floor. Alternating control also suits a plant whose demand swings widely through the day: one pump carries the quiet hours and the second cuts in when every bay is working, instead of a single large machine short cycling through both. Typical tool work includes tire inflation, hammering, grinding, fastening, orbital sanding and running air operated equipment.\u003c\/p\u003e\u003ch3\u003eInstallation notes\u003c\/h3\u003e\u003cp\u003eBoth versions are three-phase only, so confirm the panel before ordering and size the feeder to the combined nameplate rather than to one motor. Leave room at both ends of the tank for belt guard access and for the two drains, and plan a timed or automatic drain on a receiver this size because 200 gallons collects a lot of condensate. Two-stage air at 175 PSI leaves a shop floor's worth of moisture to deal with, so pair it with a \u003ca href=\"\/products\/abac-cool-100-refrigerated-air-dryer-230v\"\u003eCOOL 100 refrigerated air dryer\u003c\/a\u003e downstream of the tank, sized with headroom over the 64 CFM the pumps deliver.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the Atlas Copco group. A duplex pair delivers the output of a larger single machine while spreading run time across two pumps, which keeps each one cooler and shortens recovery under heavy demand. See the rest of our \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e and our full range of \u003ca href=\"\/collections\/air-dryers\"\u003eair dryers\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 3-Phase","offer_id":54699181408531,"sku":"8090304091","price":9329.0,"currency_code":"USD","in_stock":true},{"title":"460V 3-Phase","offer_id":54699181441299,"sku":"8090304117","price":9599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc10-duplex-200-gallon-horizontal-ironman-air-compressor.png?v=1789404495"},{"product_id":"abac-abc7-v2-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor","title":"ABAC ABC7-2112DH2P 15 HP Ironman Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 52 CFM C2 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC7-2112DH2P is the C2 pump machine in the Ironman Duplex Series: two independent 7.5 HP motor and pump assemblies on a single 120 gallon horizontal tank. Each side runs a C2 two-stage cast iron pump rated 26 CFM, for 52 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex rather than buying one larger simplex machine. Choose 230V single-phase (ABC7-2112DH2P) or 230V three-phase (ABC7-2312DH2P).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC7-2112DH2P (230V 1-phase) \/ ABC7-2312DH2P (230V 3-phase)\u003c\/li\u003e\n\u003cli\u003ePower: 15 HP total (2 x 7.5 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C2 two-stage pumps, full cast iron construction\u003c\/li\u003e\n\u003cli\u003eAir delivery: 52 CFM combined (26 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/1\/60 or 230\/3\/60\u003c\/li\u003e\n\u003cli\u003eDrive: belt drive, two independent motor and pump assemblies\u003c\/li\u003e\n\u003cli\u003eAlternating control to decrease downtime\u003c\/li\u003e\n\u003cli\u003eDual control to increase output\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel settings\u003c\/li\u003e\n\u003cli\u003eWarranty: 2 year full, assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat the duplex control actually does\u003c\/h3\u003e\u003cp\u003eTwo pumps on one tank only pay for themselves if the controller uses them properly, and the Ironman Duplex panel is built for that. Alternating control rotates which side leads, so run hours and service intervals are shared instead of one pump carrying the shop while the other sits. Dual control brings both sides on together when demand climbs, for the full 52 CFM. Between the two, each pump runs cooler, rests longer and reaches an oil change later than a single pump doing the same total work, and the panel settings are fully programmable so the changeover matches how your floor actually draws air. The practical benefit is the one that matters on a production day: a belt change, an oil service or a failed pump takes half the capacity offline, not all of it.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eAcross the Ironman duplex machines on the 120 gallon horizontal tank, the pump choice sets the airflow. The \u003ca href=\"\/products\/abac-abc5-duplex-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e10 HP ABC5-21120HD\u003c\/a\u003e pairs two C1 pumps for 32 CFM, and the \u003ca href=\"\/products\/abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e15 HP ABC7-21120HD\u003c\/a\u003e pairs two C1 pumps for 42 CFM. This machine keeps the same 15 HP total and the same tank but steps the pumps up to C2 for 52 CFM, which is the cheapest way to add 10 CFM without moving up a motor size or a service panel. Above it, the \u003ca href=\"\/products\/abac-abc10-duplex-20-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e20 HP ABC10-23120HD\u003c\/a\u003e reaches 64 CFM, and the \u003ca href=\"\/products\/abac-abc10-2312dhp-20-hp-120-gallon-horizontal-ironman-duplex-air-compressor\"\u003eABC10-2312DHP\u003c\/a\u003e is the C2 version of that pair. If redundancy is not the point, the single pump \u003ca href=\"\/products\/abac-abc7-2180v2p-7-5-hp-80-gallon-vertical-ironman-air-compressor\"\u003e7.5 HP ABC7-2180V2P\u003c\/a\u003e uses the same C2 pump on an 80 gallon vertical tank in a far smaller footprint. Size on the CFM your tools actually draw, then confirm your panel can carry the phase you pick.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eABAC builds the Ironman Duplex Series for professional work that needs a consistent air supply: metal and wood shops, auto body and repair shops, tire inflation, hammering, grinding, fastening, orbital sanding and equipment operation. In practice that means production floors, multi-bay service centers, fabrication and welding bays, and fleet maintenance operations where several tools draw at once and a compressor going down stops the whole shop. A duplex also suits a shop with a wide gap between its light and heavy demand: one side carries the quiet hours and both run when the floor is full, so neither pump spends the day at full duty.\u003c\/p\u003e\u003ch3\u003ePower, installation and air treatment\u003c\/h3\u003e\u003cp\u003eTake three-phase power if the panel has it, since three-phase motors start easier and run cooler on a compressor that cycles all day. Both sides can run together, so size the circuit for the pair even though the control normally alternates them, and leave clearance around the flywheels for cooling air and service access. A 120 gallon receiver collects real water, so plan the drain. A two-stage piston running to 175 PSI also puts warm, wet air into the line, and that moisture carries down to whatever is on the end of it. If the air reaches paint, plasma, pneumatic controls or anything that rusts, pair this compressor with a refrigerated dryer rated at or above its 52 CFM output, such as the \u003ca href=\"\/products\/abac-cool-65-refrigerated-air-dryer-115v\"\u003eABAC COOL 65\u003c\/a\u003e or, for margin on a hot shop floor, the \u003ca href=\"\/products\/abac-cool-75-refrigerated-air-dryer-115v\"\u003eCOOL 75\u003c\/a\u003e, plus a filter regulator at the drop. Browse the rest of our \u003ca href=\"\/collections\/air-dryers\"\u003eair dryers\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the Atlas Copco group. The C2 build steps up from the 42 CFM C1 duplex while still spreading run time across two pumps, which keeps each one cooler and shortens recovery under heavy demand. See the rest of our \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 1-Phase","offer_id":67579199553811,"sku":"2020141043","price":8921.0,"currency_code":"USD","in_stock":true},{"title":"230V 3-Phase","offer_id":67579199586579,"sku":"2020141044","price":8752.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc7-2112dh2p-duplex-120-gallon-horizontal-ironman-air-compressor.png?v=1791414430"},{"product_id":"abac-abc5-2112dhp-10-hp-120-gallon-horizontal-ironman-duplex-air-compressor","title":"ABAC ABC5-2112DHP 10 HP Ironman Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 32 CFM C1 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC5-2112DHP Ironman duplex mounts two independent 5 HP motor and pump assemblies on a single 120 gallon horizontal ASME tank. Each side runs a C1 two-stage cast iron pump rated 16 CFM, for 32 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex in the first place. It runs on 230V single-phase power.\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: ABC5-2112DHP\u003c\/li\u003e\n\u003cli\u003eWarthog part number: 2020141042\u003c\/li\u003e\n\u003cli\u003ePower: 10 HP total (2 x 5 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C1 two-stage pumps, cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 32 CFM combined (16 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal, ASME tank and safety valves\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/1\/60\u003c\/li\u003e\n\u003cli\u003eAlternating control, so the lead pump rotates and run time is shared\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003cli\u003eMagnetic starter and discharge valve standard\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy a duplex on single-phase power\u003c\/h3\u003e\u003cp\u003eA single 10 HP piston compressor normally calls for three-phase service. Splitting the same output across two 5 HP assemblies keeps each motor within what a 230V single-phase supply can carry, which is what puts 10 HP of output within reach of a shop on utility single-phase. Both pumps feed the same receiver, and either side can be isolated for a belt or valve change without shutting the floor down.\u003c\/p\u003e\u003ch3\u003eWhat alternating control actually does\u003c\/h3\u003e\u003cp\u003eABAC builds the Ironman Duplex range around alternating control, which rotates the lead pump so wear is spread across both assemblies instead of accumulating on one. Through a quiet morning one pump carries the load on its own and the second never starts, so neither side racks up hours it does not need. When every bay is working, both run together and the pair delivers the full 32 CFM. The fully programmable control panel is what sets those parameters, so the changeover point and the cut in and cut out pressures are tuned to how your shop actually draws air rather than left at a factory default.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eWithin the Ironman duplex range the pumps scale with the output. The \u003ca href=\"\/products\/abac-abc7-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC7 15 HP duplex\u003c\/a\u003e pairs two 7.5 HP C1 pumps for 42 CFM, the \u003ca href=\"\/products\/abac-abc7-v2-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e15 HP ABC7-2112DH2P\u003c\/a\u003e reaches 52 CFM on C2 pumps, and the \u003ca href=\"\/products\/abac-abc10-2312dhp-20-hp-120-gallon-horizontal-ironman-duplex-air-compressor\"\u003eABC10-2312DHP 20 HP duplex\u003c\/a\u003e steps up to two C2 pumps for 64 CFM on the same 120 gallon horizontal platform. If your service is three-phase and redundancy is not the point, the single pump \u003ca href=\"\/products\/abac-abc10-2312hp-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC10-2312HP\u003c\/a\u003e reaches the same 32 CFM from one C2 pump on the same tank. Size on the CFM your tools actually draw, then confirm the incoming service matches.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eABAC rates the Ironman Duplex range for extensive use, the consistent supply that metal and wood workshops and auto body and repair shops need, and lists agriculture and farm, food and beverage and general industrial work among its applications. On a single-phase floor that means service garages, body shops, small production and fabrication cells, and fleet maintenance bays that need air all day and cannot afford to lose the whole compressor to one failed pump. The 120 gallon horizontal receiver keeps the pumps from short cycling between tool triggers and gives impact wrenches and sanders a reserve to draw on.\u003c\/p\u003e\u003ch3\u003ePlanning the installation\u003c\/h3\u003e\u003cp\u003eTreat this as two compressors sharing one receiver. Each side runs on its own 230V single-phase circuit sized to its motor nameplate, so size the service to the pair rather than to a single 5 HP machine. Leave clearance down both sides for cooling airflow and for belt guard and pump access, since service on one side happens while the other is still running. Drain the receiver on a schedule or fit an automatic drain, because condensate left standing is what ends a tank's life early.\u003c\/p\u003e\u003ch3\u003eAir treatment\u003c\/h3\u003e\u003cp\u003eA piston compressor delivers saturated air, so spray finishing, plasma cutting, and air logic all want drying downstream. At 32 CFM combined the \u003ca href=\"\/products\/abac-cool-35-refrigerated-air-dryer-115v\"\u003eABAC COOL 35\u003c\/a\u003e covers both pumps running together with a little headroom, and it runs on a 115V outlet rather than needing its own three-phase feed. See the rest of our \u003ca href=\"\/collections\/refrigerated-air-dryers\"\u003erefrigerated air dryers\u003c\/a\u003e if the line feeds more than this machine.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the \u003ca href=\"\/collections\/atlas-copco\"\u003eAtlas Copco\u003c\/a\u003e group. Standard features across the two-stage Ironman series include a fully enclosed belt guard, fully cast iron pump design, ASME tank and safety valves, a discharge valve, and a magnetic starter. Splitting demand across two C1 pumps keeps each one running cooler and cuts duty cycle on both, which is what extends pump life in shops where air is drawn all day long. Browse the full range of \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 1-Phase","offer_id":67617266303251,"sku":"2020141042","price":7862.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc5-2112dhp-duplex-120-gallon-horizontal-ironman-air-compressor.png?v=1791270343"},{"product_id":"abac-abc10-2312dhp-20-hp-120-gallon-horizontal-ironman-duplex-air-compressor","title":"ABAC ABC10-2312DHP 20 HP Ironman Duplex Air Compressor - 120 Gallon Horizontal, 175 PSI, 64 CFM C2 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC10-2312DHP Ironman duplex mounts two independent 10 HP motor and pump assemblies on a single 120 gallon horizontal tank. Each side runs a C2 two-stage cast iron pump rated 32 CFM, for 64 CFM combined at a maximum 175 PSI. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex in the first place. Choose 230V three-phase (ABC10-2312DHP) or 460V three-phase (ABC10-4312DHP).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC10-2312DHP (230V) \/ ABC10-4312DHP (460V)\u003c\/li\u003e\n\u003cli\u003eWarthog part numbers: 2020141041 (230V) and 2020141045 (460V)\u003c\/li\u003e\n\u003cli\u003ePower: 20 HP total (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C2 two-stage pumps, cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 64 CFM combined (32 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 120 gallon horizontal\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/3\/60 or 460\/3\/60\u003c\/li\u003e\n\u003cli\u003eAlternating control, so the lead pump rotates and run time is shared\u003c\/li\u003e\n\u003cli\u003eFully programmable control panel\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy two pumps instead of one larger machine\u003c\/h3\u003e\u003cp\u003eABAC builds the Ironman Duplex range around alternating control, which rotates the lead pump so wear is spread across both assemblies rather than accumulating on one. That has two practical effects. Through a quiet morning one pump carries the load on its own and the second never starts, so neither assembly racks up hours it does not need. When every bay is working, both run together and the pair delivers the full 64 CFM. A single 20 HP machine covering the same demand swings between loaded and unloaded all day, and when it comes down for a belt or a pressure switch the shop is out of air. Here the second side holds the line up while the first is open.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eAcross the Ironman duplex range the pump size sets the airflow and the tank sets how long the pumps rest between draws. The \u003ca href=\"\/products\/abac-abc5-2112dhp-10-hp-120-gallon-horizontal-ironman-duplex-air-compressor\"\u003e10 HP ABC5-2112DHP\u003c\/a\u003e pairs two C1 pumps for 32 CFM on the same 120 gallon horizontal tank, and the \u003ca href=\"\/products\/abac-abc7-v2-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003e15 HP ABC7-2112DH2P\u003c\/a\u003e reaches 52 CFM. The \u003ca href=\"\/products\/abac-abc10-2320dhp-20-hp-200-gallon-horizontal-ironman-duplex-air-compressor\"\u003eABC10-2320DHP\u003c\/a\u003e is this same 64 CFM pair on a 200 gallon receiver, worth the extra floor space where draws are heavy and intermittent. If redundancy is not the point and 32 CFM is enough, the single pump \u003ca href=\"\/products\/abac-abc10-2312hp-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC10-2312HP\u003c\/a\u003e uses the same C2 pump and the same 120 gallon tank.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eABAC rates the Ironman Duplex range for extensive use, the consistent supply that metal and wood workshops and auto body and repair shops need, and lists agriculture and farm, food and beverage and general industrial work among its applications. On a shop floor that means production and fabrication cells, multi bay service centers, welding bays, and fleet maintenance operations where several air tools draw at once and a compressor going down stops everyone. Alternating control also suits a plant whose demand swings widely through the day: one pump carries the quiet hours and the second cuts in when every bay is working, instead of a single large machine short cycling through both.\u003c\/p\u003e\u003ch3\u003ePlanning the installation\u003c\/h3\u003e\u003cp\u003eTreat this as two compressors sharing one receiver. Each side runs on its own three-phase circuit sized to its motor nameplate, so size the service to the pair rather than to a single 10 HP machine, and confirm the supply voltage before ordering, because the 230V and 460V builds are separate units rather than a field conversion. Leave clearance down both sides for cooling airflow and for belt guard and pump access, since service on one side happens while the other is still running. Drain the receiver on a schedule or fit an automatic drain, because condensate left standing is what ends a tank's life early. Two-stage air at 175 PSI carries a shop floor's worth of moisture, so plan a refrigerated dryer downstream of the tank: at 64 CFM combined the 100 CFM \u003ca href=\"\/products\/abac-cool-100-refrigerated-air-dryer-230v\"\u003eABAC COOL 100\u003c\/a\u003e covers the pair with headroom for both pumps running together.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the Atlas Copco group. A duplex pair delivers the output of a larger single machine while spreading run time across two pumps, which keeps each one cooler and shortens recovery under heavy demand. See the rest of our \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e and our full range of \u003ca href=\"\/collections\/air-dryers\"\u003eair dryers\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 3-Phase","offer_id":67617411825939,"sku":"2020141041","price":9023.0,"currency_code":"USD","in_stock":true},{"title":"460V 3-Phase","offer_id":67617411858707,"sku":"2020141045","price":9469.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc10-2312dhp-duplex-120-gallon-horizontal-ironman-air-compressor.png?v=1791273903"},{"product_id":"abac-abc10-2320dhp-20-hp-200-gallon-horizontal-ironman-duplex-air-compressor","title":"ABAC ABC10-2320DHP 20 HP Ironman Duplex Air Compressor - 200 Gallon Horizontal, 175 PSI, 64 CFM C2 Cast Iron Pump","description":"\u003cp\u003eThe ABAC ABC10-2320DHP Ironman duplex puts two independent 10 HP motor and pump assemblies on a single 200 gallon horizontal tank. Each side runs a C2 two-stage cast iron pump rated 32 CFM, for 64 CFM combined at a maximum 175 PSI. The large receiver gives the pair more stored air to draw against, so the pumps cycle less under a swinging load. Because the two assemblies are separate, one can come down for service while the other keeps air on the line, which is the reason most shops step up to a duplex in the first place. Choose 230V three-phase (ABC10-2320DHP) or 460V three-phase (ABC10-4320DHP).\u003c\/p\u003e\u003ch3\u003eKey specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModels: ABC10-2320DHP (part number 2020141039) and ABC10-4320DHP (part number 2020141038)\u003c\/li\u003e\n\u003cli\u003ePower: 20 HP total (2 x 10 HP)\u003c\/li\u003e\n\u003cli\u003ePumps: two C2 two-stage pumps, cast iron cylinders\u003c\/li\u003e\n\u003cli\u003eAir delivery: 64 CFM combined (32 CFM per pump)\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 175 PSI\u003c\/li\u003e\n\u003cli\u003eTank: 200 gallon horizontal\u003c\/li\u003e\n\u003cli\u003ePower supply: 230\/3\/60 or 460\/3\/60\u003c\/li\u003e\n\u003cli\u003eBelt drive with fully enclosed belt guards\u003c\/li\u003e\n\u003cli\u003eAlternating control and a fully programmable control panel, specified by ABAC across the Ironman Duplex range\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy a duplex instead of one larger compressor\u003c\/h3\u003e\u003cp\u003eA duplex splits the same output across two smaller pumps. Under light demand the two sides alternate, so each pump runs roughly half the hours and stays cooler, and ABAC builds alternating control into the Ironman Duplex range specifically to rotate the lead pump and spread wear instead of loading one machine. Under peak draw both sides run together and the full 64 CFM is on tap. If a motor, a pump or a starter fails, the remaining side still makes 32 CFM, which usually keeps a floor working until the part arrives instead of shutting it down. The trade is two sets of service items rather than one: two oil changes, two belt sets, two intake filters.\u003c\/p\u003e\u003ch3\u003eWhat the 200 gallon receiver buys you\u003c\/h3\u003e\u003cp\u003eTank volume does not change how much air the pumps make. It changes how the machine behaves between draws. A larger receiver holds more compressed air in reserve, so a burst of demand comes out of storage first and line pressure holds while the pumps catch up. The pumps then start less often and run longer when they do start, which is easier on motors, contactors and belts than short cycling. That matters most where the load swings: a blast cabinet, a plasma table, or four or five bays that all reach for air at the same time. The 200 gallon tank is the reason to choose this machine over the otherwise identical 120 gallon version, and the cost is floor space.\u003c\/p\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cp\u003eWithin the Ironman duplex range the pumps and the receiver scale separately. The \u003ca href=\"\/products\/abac-abc10-2312dhp-20-hp-120-gallon-horizontal-ironman-duplex-air-compressor\"\u003eABC10-2312DHP\u003c\/a\u003e is the same 20 HP pair at the same 64 CFM on a 120 gallon tank, so it takes less floor space and stores less air between cycles. Below that, the \u003ca href=\"\/products\/abac-abc7-v2-duplex-15-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC7-2112DH2P\u003c\/a\u003e delivers 52 CFM from two 7.5 HP C2 pumps and the \u003ca href=\"\/products\/abac-abc5-2112dhp-10-hp-120-gallon-horizontal-ironman-duplex-air-compressor\"\u003eABC5-2112DHP\u003c\/a\u003e delivers 32 CFM from two 5 HP C1 pumps, both on 120 gallon horizontal tanks. Every machine in the range tops out at the same 175 PSI, so size on CFM first and on receiver volume second. If redundancy is not the point and 32 CFM covers the work, a single pump machine such as the \u003ca href=\"\/products\/abac-abc10-10-hp-120-gallon-horizontal-ironman-air-compressor\"\u003eABC10-23120H\u003c\/a\u003e uses the same C2 pump at a lower installed cost. Above this machine the next step is a rotary screw rated for 100 percent duty rather than a larger piston compressor.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cp\u003eABAC positions the Ironman Duplex range for extensive use, meaning professional work that needs a consistent supply of compressed air, and names metal and wood workshops and auto body and repair shops as typical settings, along with agriculture and farm, food and beverage and general industrial duty. On the floor that looks like production shops, multi bay service and collision centers, fabrication and welding bays, and fleet maintenance operations running several air tools at once, where a compressor going down stops everything. Alternating control also suits a plant whose demand swings through the day: one pump carries the quiet hours and the second cuts in when every bay is working, instead of a single large machine short cycling through both.\u003c\/p\u003e\u003ch3\u003ePower and installation\u003c\/h3\u003e\u003cp\u003eBoth versions are three-phase only, so confirm what the panel actually supplies before ordering and size the feeder to the combined nameplate of the two motors rather than to one. Leave working room at both ends of the tank for belt guard access and for the drains, and plan a timed or automatic drain, because a 200 gallon receiver collects a great deal of condensate and a manual drain that nobody pulls is how tanks rust from the inside. Keep the room ventilated: two pumps at full load put real heat into a space, and intake air that is hot or dusty shortens the life of both sides at once.\u003c\/p\u003e\u003ch3\u003eAir treatment\u003c\/h3\u003e\u003cp\u003eA two-stage piston compressor this size puts a lot of water into the line. Size the dryer above the compressor output: at 64 CFM the \u003ca href=\"\/products\/abac-cool-100-refrigerated-air-dryer-230v\"\u003eABAC COOL 100\u003c\/a\u003e refrigerated dryer, rated 100 CFM, leaves headroom for a hot day and a long duty cycle. Put the dryer downstream of the receiver so the tank drops out the easy water first, and add a filter regulator ahead of anything that sprays, meters or holds a tolerance. See the full range of \u003ca href=\"\/collections\/air-dryers\"\u003eair dryers\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003ePart of ABAC's Ironman cast iron range from the Atlas Copco group. A duplex pair delivers the output of a larger single machine while spreading run time across two pumps, which keeps each one cooler and shortens recovery under heavy demand. See our wider selection of \u003ca href=\"\/collections\/piston-air-compressors\"\u003episton air compressors\u003c\/a\u003e and all \u003ca href=\"\/collections\/air-compressors\"\u003eair compressors\u003c\/a\u003e.\u003c\/p\u003e","brand":"ABAC","offers":[{"title":"230V 3-Phase","offer_id":67617793376531,"sku":"2020141039","price":10722.0,"currency_code":"USD","in_stock":true},{"title":"460V 3-Phase","offer_id":67617793409299,"sku":"2020141038","price":11170.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/abac-abc10-2320dhp-duplex-200-gallon-horizontal-ironman-air-compressor.png?v=1791277827"}],"url":"https:\/\/aircompressorstore.com\/collections\/abac-duplex-air-compressors.oembed","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}