{"product_id":"champion-big-lock-adapter-and-reducer","title":"Champion Big-Lock Threaded Adapter and Reducer (73mm to 220mm)","description":"\u003cp\u003eTwo Big-Lock parts, two different jobs, and they are easy to confuse at the counter.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eA \u003cstrong\u003ethreaded adapter\u003c\/strong\u003e takes a grooved Big-Lock connection to an \u003cstrong\u003eNPT thread\u003c\/strong\u003e. This is how an aluminum main lands on a receiver, a dryer, a compressor discharge, a valve or an existing steel header.\u003c\/li\u003e\n\u003cli\u003eA \u003cstrong\u003ereducer\u003c\/strong\u003e steps the main from one \u003cstrong\u003eBig-Lock size down to the next\u003c\/strong\u003e. Both ends are grooved tube connections.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOne thing to get right before you order: the reducers are supplied WITHOUT couplings.\u003c\/strong\u003e Every reducer needs two \u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-straight-union-coupling\"\u003estraight union couplings\u003c\/a\u003e, one for each end, ordered separately. The elbows and tees elsewhere in the Big-Lock range include theirs; the reducers do not. This is the most common short order on the range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChoose your fitting from the dropdown above.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eModel Selection Chart\u003c\/h2\u003e\u003ch3\u003eThreaded adapters, grooved to NPT\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eTube Size\u003c\/th\u003e\n\u003cth\u003eNominal\u003c\/th\u003e\n\u003cth\u003eThread\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-73-1.5M\u003c\/td\u003e\n\u003ctd\u003e73mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003ctd\u003e1-1\/2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-73-2.0M\u003c\/td\u003e\n\u003ctd\u003e73mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003ctd\u003e2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-73-2.5M\u003c\/td\u003e\n\u003ctd\u003e73mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-73-2.5N\u003c\/td\u003e\n\u003ctd\u003e73mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in female NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-90-1.5M\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003e1-1\/2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-90-2.0M\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003e2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-90-2.5M\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-90-3.0M\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003e3 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-90-3.0N\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003ctd\u003e3 in female NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-115-2.0M\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-115-2.5M\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-115-3.0M\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e3 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-115-4.0M\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e4 in male NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-TA-115-4.0N\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e4 in female NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eChampion catalogs threaded adapters in 73mm, 90mm and 115mm only. Above 115mm, a main is normally taken to a flanged connection with a Big-Lock flange kit rather than a thread, which is also what most equipment that size expects.\u003c\/p\u003e\u003ch3\u003eReducers, tube to tube, couplings NOT included\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eLarge End\u003c\/th\u003e\n\u003cth\u003eSmall End\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-90-73\u003c\/td\u003e\n\u003ctd\u003e90mm \/ 3 in\u003c\/td\u003e\n\u003ctd\u003e73mm \/ 2-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-115-73\u003c\/td\u003e\n\u003ctd\u003e115mm \/ 4 in\u003c\/td\u003e\n\u003ctd\u003e73mm \/ 2-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-115-90\u003c\/td\u003e\n\u003ctd\u003e115mm \/ 4 in\u003c\/td\u003e\n\u003ctd\u003e90mm \/ 3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-168-90\u003c\/td\u003e\n\u003ctd\u003e168mm \/ 6 in\u003c\/td\u003e\n\u003ctd\u003e90mm \/ 3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-168-115\u003c\/td\u003e\n\u003ctd\u003e168mm \/ 6 in\u003c\/td\u003e\n\u003ctd\u003e115mm \/ 4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-220-115\u003c\/td\u003e\n\u003ctd\u003e220mm \/ 8 in\u003c\/td\u003e\n\u003ctd\u003e115mm \/ 4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXCBL-RD-220-168\u003c\/td\u003e\n\u003ctd\u003e220mm \/ 8 in\u003c\/td\u003e\n\u003ctd\u003e168mm \/ 6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eThe range has gaps: there is no catalogued 168mm to 73mm, 220mm to 73mm or 220mm to 90mm reducer. Those steps are made with two reducers in series, or more sensibly with a reduction tee. Ask us if you are trying to drop more than one size at once.\u003c\/p\u003e\u003ch2\u003eReduce Only Where the Demand Drops\u003c\/h2\u003e\u003cp\u003eReducing a main is a decision about flow, not about tidiness. Diameter is the single biggest lever on pressure drop, and every step down costs you capacity for the whole length of pipe that follows it.\u003c\/p\u003e\u003cp\u003eReduce where a genuine chunk of demand has already been taken off, typically after a major branch. Do not reduce simply because the far end of the building is quieter; on a \u003cstrong\u003eloop\u003c\/strong\u003e main, air reaches the far end from both directions and the diameter should stay constant the whole way round. If you are unsure, send us the layout and we will tell you whether the step is costing you anything.\u003c\/p\u003e\u003ch2\u003eShared Technical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem\u003c\/td\u003e\n\u003ctd\u003eChampion Big-Lock grooved mechanical coupling for aluminum pipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePipe Material\u003c\/td\u003e\n\u003ctd\u003eMarine-grade aluminum, non-corrosive, one-tenth the weight of the same diameter steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreaded Adapter Sizes\u003c\/td\u003e\n\u003ctd\u003e73mm, 90mm and 115mm, in male and selected female NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReducer Sizes\u003c\/td\u003e\n\u003ctd\u003e90mm down to 73mm through 220mm down to 168mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCouplings\u003c\/td\u003e\n\u003ctd\u003eNOT included on reducers; two required per reducer. Threaded adapters land on a grooved end and also need a coupling to the pipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Sealant\u003c\/td\u003e\n\u003ctd\u003eUse PTFE tape or a liquid sealant rated for compressed air on every tapered NPT joint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eChampion Lifetime Warranty on Quick-Lock and Big-Lock pipe and fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eSpecification note.\u003c\/strong\u003e Champion's price list publishes description, part number and list price for the Big-Lock range and nothing else: no pressure rating, no temperature band, no weights and no dimensions, and we have not found a Big-Lock datasheet that supplies them. This listing states only what Champion publishes. Ask us and we will source anything further from the factory before you order.\u003c\/p\u003e\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\u003cp\u003eLanding a Big-Lock main on a compressor discharge, a receiver tank, a refrigerated or desiccant dryer, a large filter housing or an isolation valve; tying new aluminum into an existing threaded steel header during a phased retrofit; and stepping a plant main down after a major branch has been taken off.\u003c\/p\u003e\u003ch2\u003eBuilding a Complete Big-Lock System\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-series-aluminum-compressed-air-pipe\"\u003eBig-Lock aluminum pipe, 73mm to 273mm\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-straight-union-coupling\"\u003eStraight union couplings\u003c\/a\u003e - two per reducer, plus one per tube joint\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-union-elbow\"\u003e90 and 45 degree elbows and street elbows\u003c\/a\u003e, couplings included\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-union-tee\"\u003eJunction tees and reduction tees\u003c\/a\u003e, couplings included\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aircompressorstore.com\/products\/champion-big-lock-plug-cap\"\u003ePlug caps\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/aircompressorstore.com\/collections\/air-dryers\"\u003eAir dryers\u003c\/a\u003e and \u003ca href=\"https:\/\/aircompressorstore.com\/collections\/air-filters\"\u003ecompressed air filtration\u003c\/a\u003e, which is usually what the threaded adapter is landing on\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOrdering Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll Big-Lock products and accessories are NO CANCEL \/ NO RETURN\u003c\/strong\u003e, per Champion's current price list.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreight:\u003c\/strong\u003e freight collect from Huntersville, NC 28078 or Las Vegas, NV 89113.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weights:\u003c\/strong\u003e Champion publishes no weight for any Big-Lock fitting, so no catalog weight is carried on these variants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotography:\u003c\/strong\u003e Champion publishes no photograph of the Big-Lock adapters or reducers, so this listing is deliberately shown without an image rather than with a stand-in from another manufacturer's grooved range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Buy from Air Compressor Store\u003c\/h2\u003e\u003cp\u003eAir Compressor Store is an authorized Champion Pneumatic distributor. The adapters are where a new aluminum system meets whatever is already in the building, and that is exactly the interface that gets mis-specified. Send us photos of the connections you have to land on and we will tell you which adapters and couplings the job needs.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDo reducers really not come with couplings?\u003c\/h3\u003e\u003cp\u003eCorrect, and it catches people out. Reducers are the only fitting in this part of the Big-Lock range supplied bare. Order two couplings per reducer. Elbows and tees end WC for with couplings; the reducer part numbers do not.\u003c\/p\u003e\u003ch3\u003eWhy is the 73mm x 2-1\/2 in male adapter only $52 when the 1-1\/2 in and 2 in are both $113?\u003c\/h3\u003e\u003cp\u003eThat is what Champion's August 2026 price list publishes, and it is a sharp enough outlier that we have queried it with the factory. We list it at the book price. If you are ordering a quantity of these, tell us and we will have the price confirmed in writing first.\u003c\/p\u003e\u003ch3\u003eWhy is the 115mm x 4 in male adapter cheaper than the 3 in?\u003c\/h3\u003e\u003cp\u003e$151 against $158, which is what the book prints. Another inversion we have flagged. Both are listed as printed.\u003c\/p\u003e\u003ch3\u003eMale or female thread?\u003c\/h3\u003e\u003cp\u003eMatch what you are landing on. A male adapter goes into a female port such as a receiver boss or a valve. A female adapter accepts a male thread. Champion catalogs female adapters in only three places, 73mm x 2-1\/2 in, 90mm x 3 in and 115mm x 4 in, all at the full line size.\u003c\/p\u003e\u003ch3\u003eCan I adapt a 168mm or 220mm main to a thread?\u003c\/h3\u003e\u003cp\u003eNot with a catalogued threaded adapter; they stop at 115mm. Use a Big-Lock flange kit to a mating flange, which is the normal approach at that size, or reduce to 115mm first and then adapt. Ask us which is cleaner for your connection.\u003c\/p\u003e\u003ch3\u003eDo I need thread sealant?\u003c\/h3\u003e\u003cp\u003eOn the NPT side, yes, PTFE tape or a liquid sealant rated for compressed air. The grooved side seals mechanically on the gasket and needs nothing.\u003c\/p\u003e","brand":"Champion","offers":[{"title":"Threaded Adapter - 73mm x 1-1\/2 in MNPT","offer_id":67579387609363,"sku":"XCBL-TA-73-1.5M","price":91.53,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 73mm x 2 in MNPT","offer_id":67579387642131,"sku":"XCBL-TA-73-2.0M","price":91.53,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 73mm x 2-1\/2 in MNPT","offer_id":67579387674899,"sku":"XCBL-TA-73-2.5M","price":42.12,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 73mm x 2-1\/2 in FNPT","offer_id":67579387707667,"sku":"XCBL-TA-73-2.5N","price":123.93,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 90mm x 1-1\/2 in MNPT","offer_id":67579387740435,"sku":"XCBL-TA-90-1.5M","price":95.58,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 90mm x 2 in MNPT","offer_id":67579387773203,"sku":"XCBL-TA-90-2.0M","price":95.58,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 90mm x 2-1\/2 in MNPT","offer_id":67579387805971,"sku":"XCBL-TA-90-2.5M","price":112.59,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 90mm x 3 in MNPT","offer_id":67579387838739,"sku":"XCBL-TA-90-3.0M","price":128.79,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 90mm x 3 in FNPT","offer_id":67579387871507,"sku":"XCBL-TA-90-3.0N","price":128.79,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 115mm x 2 in MNPT","offer_id":67579387904275,"sku":"XCBL-TA-115-2.0M","price":115.02,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 115mm x 2-1\/2 in MNPT","offer_id":67579387937043,"sku":"XCBL-TA-115-2.5M","price":120.69,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 115mm x 3 in MNPT","offer_id":67579387969811,"sku":"XCBL-TA-115-3.0M","price":127.98,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 115mm x 4 in MNPT","offer_id":67579388002579,"sku":"XCBL-TA-115-4.0M","price":122.31,"currency_code":"USD","in_stock":true},{"title":"Threaded Adapter - 115mm x 4 in FNPT","offer_id":67579388035347,"sku":"XCBL-TA-115-4.0N","price":199.26,"currency_code":"USD","in_stock":true},{"title":"Reducer - 90mm x 73mm","offer_id":67579388068115,"sku":"XCBL-RD-90-73","price":105.3,"currency_code":"USD","in_stock":true},{"title":"Reducer - 115mm x 73mm","offer_id":67579388100883,"sku":"XCBL-RD-115-73","price":129.6,"currency_code":"USD","in_stock":true},{"title":"Reducer - 115mm x 90mm","offer_id":67579388133651,"sku":"XCBL-RD-115-90","price":109.35,"currency_code":"USD","in_stock":true},{"title":"Reducer - 168mm x 90mm","offer_id":67579388166419,"sku":"XCBL-RD-168-90","price":277.83,"currency_code":"USD","in_stock":true},{"title":"Reducer - 168mm x 115mm","offer_id":67579388199187,"sku":"XCBL-RD-168-115","price":251.91,"currency_code":"USD","in_stock":true},{"title":"Reducer - 220mm x 115mm","offer_id":67579388231955,"sku":"XCBL-RD-220-115","price":439.83,"currency_code":"USD","in_stock":true},{"title":"Reducer - 220mm x 168mm","offer_id":67579388264723,"sku":"XCBL-RD-220-168","price":558.09,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/champion-big-lock-adapter-and-reducer","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}