{"product_id":"conrader-oem-replacement-piloted-unloader-check-valve","title":"Conrader Piloted Unloader Check Valve — OEM Replacement Combo (Pilot + Unloader + Check)","description":"\u003cp\u003eThe Conrader piloted unloader check valve is an all-in-one combination valve that lets an air compressor run in continuous (constant-speed) operation. A single body integrates three functions — a \u003cstrong\u003epilot valve\u003c\/strong\u003e, a \u003cstrong\u003edischarge unloader valve\u003c\/strong\u003e, and a \u003cstrong\u003echeck valve\u003c\/strong\u003e — for gas-engine and electric-motor driven compressors. Each valve below is factory-set to a specific pressure range and configured as a direct OEM replacement for a popular compressor brand.\u003c\/p\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThe check valve prevents backflow as the compressor builds pressure. The pilot stays closed until downstream pressure reaches the unload setting, then opens and pressurizes the unloader valve, venting excess air to atmosphere. As air is used and pressure drops to the load setting, the pilot closes, the unloader closes, and the compressor builds pressure again — repeating the cycle.\u003c\/p\u003e\n\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Combination pilot + discharge unloader + check valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating pressure:\u003c\/strong\u003e 20–250 PSI (factory-set per model)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e –15° to 400°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax flow rating:\u003c\/strong\u003e NG-Series 30 SCFM · NSG-Series 20 SCFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet connections:\u003c\/strong\u003e Compression tube, SAE 45° flare, or male\/female NPT, 1\/8\"–3\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Gas-engine driven air compressors (also suits electric-motor units)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOEM replacement cross-reference\u003c\/h3\u003e\n\u003cp\u003eSelect your compressor's original part from the options above. This valve directly replaces:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAtlas Copco 1312100497\u003c\/li\u003e\n\u003cli\u003eCampbell Hausfeld 128400AV, 128410AV, ST128408AV, ST128413AV, ST128415AV\u003c\/li\u003e\n\u003cli\u003eHitachi 885426 \/ EC2510E\u003c\/li\u003e\n\u003cli\u003eIngersoll Rand 49816283C, 32262867, 56288756\u003c\/li\u003e\n\u003cli\u003eMakita LMV\u003c\/li\u003e\n\u003cli\u003eMi-T-M 22-0270, 22-0346\u003c\/li\u003e\n\u003cli\u003eQuincy 112711, 1151M-150\u003c\/li\u003e\n\u003cli\u003eRolair 131CVT, 131B\u003c\/li\u003e\n\u003cli\u003eThomas 638835\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003eUsed on gas-engine and electric air compressors to load and unload the pump automatically — the standard control on contractor, truck-mount, and stationary compressors that run continuously.\u003c\/p\u003e\n\n\u003cp\u003eGenuine Conrader piloted unloader check valves combine the pilot, unloader, and check valve in one rugged body for reliable continuous-run compressor control — a direct replacement for Atlas Copco, Campbell Hausfeld, Hitachi, Ingersoll Rand, Makita, Mi-T-M, Quincy, Rolair, and Thomas OEM valves.\u003c\/p\u003e","brand":"Conrader","offers":[{"title":"Atlas Copco 1312100497","offer_id":54270628462867,"sku":"NG20-M-SU4-14-SST","price":70.33,"currency_code":"USD","in_stock":true},{"title":"Campbell Hausfeld 128400AV","offer_id":54270628495635,"sku":"NRO-5530","price":50.83,"currency_code":"USD","in_stock":true},{"title":"Campbell Hausfeld 128410AV (95-125 PSI)","offer_id":54270628528403,"sku":"NSG7-M 95-125","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Campbell Hausfeld ST128408AV (140-175 PSI)","offer_id":54270628561171,"sku":"NSG17-M 140-175","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Campbell Hausfeld ST128413AV (95-125 PSI)","offer_id":54270628593939,"sku":"NSG18-M 95-125","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Campbell Hausfeld ST128415AV (95-125 PSI)","offer_id":54270628626707,"sku":"NSG19-M 95-125","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Hitachi 885426 \/ EC2510E (110-140 PSI)","offer_id":54270628659475,"sku":"NG42-M 110-140","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Ingersoll Rand 49816283C — P1 (145-175 PSI)","offer_id":54270628692243,"sku":"NG13-M P1-145-175","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Ingersoll Rand 49816283C — P2 (145-175 PSI)","offer_id":54270628725011,"sku":"NG13-M P2-145-175","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Ingersoll Rand 32262867 (145-175 PSI)","offer_id":54270628757779,"sku":"NG16P1 145-175","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Ingersoll Rand 56288756","offer_id":54270628790547,"sku":"NG47-MP2","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Makita LMV (105-135 PSI)","offer_id":54270628823315,"sku":"NSG19-M 105-135","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Mi-T-M 22-0270 (140-175 PSI)","offer_id":54270628856083,"sku":"NSG29-M 140-175","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Mi-T-M 22-0346 (95-125 PSI)","offer_id":54270628888851,"sku":"NSG13-M 95-125","price":50.17,"currency_code":"USD","in_stock":true},{"title":"Quincy 112711 (110-125 PSI)","offer_id":54270628921619,"sku":"NG3-M-NF1P1-110-125","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Quincy 1151M-150","offer_id":54270628954387,"sku":"NG2-MP2","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Rolair 131CVT (140-175 PSI)","offer_id":54270628987155,"sku":"NG29-M 140-175","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Thomas 638835 (110-160 PSI)","offer_id":54270629019923,"sku":"NG29-M-D 110-160","price":64.67,"currency_code":"USD","in_stock":true},{"title":"Rolair 131B (95-125 PSI)","offer_id":54270629052691,"sku":"BG1-M-PSI","price":50.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/NG_95284fda-5112-4126-85c1-55cb6694a93d.jpg?v=1781115518","url":"https:\/\/aircompressorstore.com\/products\/conrader-oem-replacement-piloted-unloader-check-valve","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}