{"product_id":"porter-cable-a19712-1-2-npt-check-valve-genuine-oem-replacement-air-compressor-check-valve","title":"Porter-Cable A19712 1\/2\" NPT Check Valve – Genuine OEM Replacement Air Compressor Check Valve","description":"\u003cdiv class=\"\" data-turn-id-container=\"39f18332-06a7-4b54-aad4-7e4450ebc2b7\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--sticky-padding-top)\" dir=\"auto\" data-turn-id=\"39f18332-06a7-4b54-aad4-7e4450ebc2b7\" data-turn-id-container=\"39f18332-06a7-4b54-aad4-7e4450ebc2b7\" data-testid=\"conversation-turn-521\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a564ce8-dd20-83ea-a458-fe6abd848766-70\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a564ce8-dd20-83ea-a458-fe6abd848766-70\" data-turn-id-container=\"request-6a564ce8-dd20-83ea-a458-fe6abd848766-70\" data-testid=\"conversation-turn-522\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"d6751c71-8c67-499c-a075-50cc6a0e9ba4\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"streaming-animation markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"205\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e A19712\u003cbr data-start=\"23\" data-end=\"26\"\u003e\u003cstrong data-start=\"26\" data-end=\"39\"\u003eCategory:\u003c\/strong\u003e Air Compressor Parts → Air System Components → Check Valves\u003cbr data-start=\"99\" data-end=\"102\"\u003e\u003cstrong data-start=\"102\" data-end=\"111\"\u003eType:\u003c\/strong\u003e Porter-Cable A19712 1\/2\" NPT Check Valve – Genuine OEM Replacement Air Compressor Check Valve\u003c\/p\u003e\n\u003chr data-start=\"207\" data-end=\"210\"\u003e\n\u003cp data-start=\"309\" data-end=\"997\"\u003eThe \u003cstrong data-start=\"313\" data-end=\"357\"\u003ePorter-Cable A19712 1\/2\" NPT Check Valve\u003c\/strong\u003e is a genuine OEM replacement air compressor check valve designed for compatible \u003cstrong data-start=\"438\" data-end=\"527\"\u003ePorter-Cable, DeWalt, Craftsman, DeVilbiss, Black \u0026amp; Decker, and Delta air compressors\u003c\/strong\u003e. This brass check valve directs compressed air from the pump into the air tank while preventing stored air from flowing back into the pump after the compressor shuts off. Manufactured to original equipment specifications, it provides a direct-fit replacement for worn, leaking, or malfunctioning check valves, helping restore proper compressor performance and reliable restarting. It also replaces obsolete part number \u003cstrong data-start=\"947\" data-end=\"958\"\u003eAC-0631\u003c\/strong\u003e.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1171\" data-end=\"1174\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1176\" data-end=\"1202\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1204\" data-end=\"1595\"\u003e\n\u003cli data-section-id=\"1tlndbv\" data-start=\"1204\" data-end=\"1229\"\u003e\n\u003cstrong data-start=\"1206\" data-end=\"1222\"\u003ePart Number:\u003c\/strong\u003e A19712\u003c\/li\u003e\n\u003cli data-section-id=\"vjgkmv\" data-start=\"1230\" data-end=\"1273\"\u003eGenuine OEM Porter-Cable replacement part\u003c\/li\u003e\n\u003cli data-section-id=\"sti2zn\" data-start=\"1274\" data-end=\"1311\"\u003e1\/2\" NPT air compressor check valve\u003c\/li\u003e\n\u003cli data-section-id=\"mv1uyi\" data-start=\"1312\" data-end=\"1369\"\u003ePrevents compressed air from flowing back into the pump\u003c\/li\u003e\n\u003cli data-section-id=\"1v4ambw\" data-start=\"1370\" data-end=\"1430\"\u003eDirects air from the compressor pump into the storage tank\u003c\/li\u003e\n\u003cli data-section-id=\"2hvar1\" data-start=\"1431\" data-end=\"1484\"\u003eDurable brass construction for corrosion resistance\u003c\/li\u003e\n\u003cli data-section-id=\"p6iksq\" data-start=\"1485\" data-end=\"1513\"\u003eDirect-fit OEM replacement\u003c\/li\u003e\n\u003cli data-section-id=\"okwqfw\" data-start=\"1514\" data-end=\"1595\"\u003eReplaces obsolete part number \u003cstrong data-start=\"1546\" data-end=\"1557\"\u003eAC-0631\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1597\" data-end=\"1600\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1602\" data-end=\"1629\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1631\" data-end=\"1654\"\u003e\u003cstrong data-start=\"1631\" data-end=\"1647\"\u003ePart Number:\u003c\/strong\u003e A19712\u003c\/p\u003e\n\u003cp data-start=\"1656\" data-end=\"1711\"\u003e\u003cstrong data-start=\"1656\" data-end=\"1673\"\u003eManufacturer:\u003c\/strong\u003e Porter-Cable \/ Stanley Black \u0026amp; Decker\u003c\/p\u003e\n\u003cp data-start=\"1713\" data-end=\"1757\"\u003e\u003cstrong data-start=\"1713\" data-end=\"1730\"\u003eProduct Type:\u003c\/strong\u003e Air Compressor Check Valve\u003c\/p\u003e\n\u003cp data-start=\"1759\" data-end=\"1791\"\u003e\u003cstrong data-start=\"1759\" data-end=\"1779\"\u003eTank Connection:\u003c\/strong\u003e 1\/2 in. NPT\u003c\/p\u003e\n\u003cp data-start=\"1793\" data-end=\"1816\"\u003e\u003cstrong data-start=\"1793\" data-end=\"1810\"\u003eConstruction:\u003c\/strong\u003e Brass\u003c\/p\u003e\n\u003cp data-start=\"1818\" data-end=\"1866\"\u003e\u003cstrong data-start=\"1818\" data-end=\"1834\"\u003eApplication:\u003c\/strong\u003e Air Compressor Tank Check Valve\u003c\/p\u003e\n\u003cp data-start=\"1868\" data-end=\"1885\"\u003e\u003cstrong data-start=\"1868\" data-end=\"1881\"\u003eOEM Part:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003cp data-start=\"1887\" data-end=\"1956\"\u003e\u003cstrong data-start=\"1887\" data-end=\"1900\"\u003eQuantity:\u003c\/strong\u003e Sold Individually \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1958\" data-end=\"1961\"\u003e\n\u003ch2 data-section-id=\"17z2fqi\" data-start=\"1963\" data-end=\"1989\"\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp data-start=\"1991\" data-end=\"2098\"\u003eThe \u003cstrong data-start=\"1995\" data-end=\"2030\"\u003ePorter-Cable A19712 Check Valve\u003c\/strong\u003e fits numerous compatible air compressors from the following brands:\u003c\/p\u003e\n\u003ch3 data-section-id=\"wi3rbc\" data-start=\"2100\" data-end=\"2121\"\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul data-start=\"2123\" data-end=\"2219\"\u003e\n\u003cli data-section-id=\"1k2jd6q\" data-start=\"2123\" data-end=\"2141\"\u003e\u003cstrong data-start=\"2125\" data-end=\"2141\"\u003ePorter-Cable\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"6fxhl3\" data-start=\"2142\" data-end=\"2154\"\u003e\u003cstrong data-start=\"2144\" data-end=\"2154\"\u003eDeWalt\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1hgc4qj\" data-start=\"2155\" data-end=\"2170\"\u003e\u003cstrong data-start=\"2157\" data-end=\"2170\"\u003eCraftsman\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1vdtf5\" data-start=\"2171\" data-end=\"2186\"\u003e\u003cstrong data-start=\"2173\" data-end=\"2186\"\u003eDeVilbiss\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"bqx6if\" data-start=\"2187\" data-end=\"2207\"\u003e\u003cstrong data-start=\"2189\" data-end=\"2207\"\u003eBlack \u0026amp; Decker\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"kond8w\" data-start=\"2208\" data-end=\"2219\"\u003e\u003cstrong data-start=\"2210\" data-end=\"2219\"\u003eDelta\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2221\" data-end=\"2254\"\u003eCommon compatible models include:\u003c\/p\u003e\n\u003cul data-start=\"2256\" data-end=\"2405\"\u003e\n\u003cli data-section-id=\"xzd777\" data-start=\"2256\" data-end=\"2282\"\u003e\u003cstrong data-start=\"2258\" data-end=\"2282\"\u003ePorter-Cable CPF6020\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1ytvuuo\" data-start=\"2283\" data-end=\"2311\"\u003e\u003cstrong data-start=\"2285\" data-end=\"2311\"\u003ePorter-Cable CPF6025VP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"5aaw45\" data-start=\"2312\" data-end=\"2339\"\u003e\u003cstrong data-start=\"2314\" data-end=\"2339\"\u003ePorter-Cable CFFC350A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"18u3mh1\" data-start=\"2340\" data-end=\"2364\"\u003e\u003cstrong data-start=\"2342\" data-end=\"2364\"\u003ePorter-Cable C5100\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"16kmy7o\" data-start=\"2365\" data-end=\"2384\"\u003e\u003cstrong data-start=\"2367\" data-end=\"2384\"\u003eDeWalt D55171\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"zyxvj0\" data-start=\"2385\" data-end=\"2405\"\u003e\u003cstrong data-start=\"2387\" data-end=\"2405\"\u003eMakita MAC2200\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2407\" data-end=\"2651\"\u003eThis OEM valve is used across hundreds of compressor models. Always verify your compressor model, type number, original part number, and fitting configuration before ordering to ensure proper compatibility. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2653\" data-end=\"2656\"\u003e\n\u003ch2 data-section-id=\"gno109\" data-start=\"2658\" data-end=\"2688\"\u003eFunction of the Check Valve\u003c\/h2\u003e\n\u003cp data-start=\"2690\" data-end=\"2732\"\u003eThe \u003cstrong data-start=\"2694\" data-end=\"2716\"\u003eA19712 Check Valve\u003c\/strong\u003e is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2734\" data-end=\"3035\"\u003e\n\u003cli data-section-id=\"29oups\" data-start=\"2734\" data-end=\"2789\"\u003eDirect compressed air from the pump into the air tank\u003c\/li\u003e\n\u003cli data-section-id=\"52hqmt\" data-start=\"2790\" data-end=\"2842\"\u003ePrevent stored air from flowing back into the pump\u003c\/li\u003e\n\u003cli data-section-id=\"1tffung\" data-start=\"2843\" data-end=\"2914\"\u003eAllow the unloader valve to relieve pump head pressure after shutdown\u003c\/li\u003e\n\u003cli data-section-id=\"wzfj2e\" data-start=\"2915\" data-end=\"2958\"\u003eImprove compressor restarting performance\u003c\/li\u003e\n\u003cli data-section-id=\"19au0f4\" data-start=\"2959\" data-end=\"2993\"\u003eProtect internal pump components\u003c\/li\u003e\n\u003cli data-section-id=\"1t3v2ge\" data-start=\"2994\" data-end=\"3035\"\u003eRestore the factory air delivery system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3037\" data-end=\"3194\"\u003eUsing a genuine OEM replacement check valve helps maintain proper pressure retention and reliable compressor operation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3196\" data-end=\"3199\"\u003e\n\u003ch2 data-section-id=\"1cnbljb\" data-start=\"3201\" data-end=\"3238\"\u003eCommon Signs Replacement Is Needed\u003c\/h2\u003e\n\u003cp data-start=\"3240\" data-end=\"3278\"\u003eReplace the check valve if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3280\" data-end=\"3530\"\u003e\n\u003cli data-section-id=\"w5mzjk\" data-start=\"3280\" data-end=\"3332\"\u003eAir leaking from the unloader valve after shutdown\u003c\/li\u003e\n\u003cli data-section-id=\"fsefyh\" data-start=\"3333\" data-end=\"3375\"\u003eCompressor struggles or fails to restart\u003c\/li\u003e\n\u003cli data-section-id=\"1ksvxn5\" data-start=\"3376\" data-end=\"3414\"\u003eAir flowing backward toward the pump\u003c\/li\u003e\n\u003cli data-section-id=\"gedigf\" data-start=\"3415\" data-end=\"3453\"\u003eConstant pressure loss from the tank\u003c\/li\u003e\n\u003cli data-section-id=\"u9otk4\" data-start=\"3454\" data-end=\"3486\"\u003eDamaged or corroded valve body\u003c\/li\u003e\n\u003cli data-section-id=\"15dpfyd\" data-start=\"3487\" data-end=\"3530\"\u003eCompressor motor overloads during startup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3532\" data-end=\"3721\"\u003eA faulty check valve can allow tank pressure to push back against the compressor pump, making restarts difficult and potentially overloading the motor. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3723\" data-end=\"3726\"\u003e\n\u003ch2 data-section-id=\"10va281\" data-start=\"3728\" data-end=\"3759\"\u003eInstallation \u0026amp; Service Notes\u003c\/h2\u003e\n\u003cp data-start=\"3761\" data-end=\"3875\"\u003eDisconnect electrical power, shut off the compressor, and completely drain all air from the tank before servicing.\u003c\/p\u003e\n\u003cp data-start=\"3877\" data-end=\"4435\"\u003eRemove the discharge tube and pressure switch unloader line from the existing \u003cstrong data-start=\"3955\" data-end=\"3977\"\u003eA19712 Check Valve\u003c\/strong\u003e, then unscrew the valve from the air tank using the appropriate wrench. Apply an approved thread sealant or PTFE thread tape to the replacement valve threads if specified by the manufacturer, then install and tighten the new valve securely without overtightening. Reconnect the discharge tube and unloader line, restore power, and run the compressor to verify proper pressure buildup and confirm there are no air leaks. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"4437\" data-end=\"4687\"\u003e\u003cstrong data-start=\"4437\" data-end=\"4451\"\u003eImportant:\u003c\/strong\u003e Always verify your compressor model, thread size, and original part number before ordering. Inspect the discharge tube, compression fittings, and unloader line during replacement and replace any worn or damaged components as necessary.\u003c\/p\u003e\n\u003chr data-start=\"4689\" data-end=\"4692\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4694\" data-end=\"4724\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4726\" data-end=\"5210\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1l02aff\" data-start=\"4726\" data-end=\"4799\"\u003eDrain the air tank regularly to reduce internal moisture and corrosion.\u003c\/li\u003e\n\u003cli data-section-id=\"nq32o0\" data-start=\"4800\" data-end=\"4866\"\u003eInspect the check valve periodically for leaks or pressure loss.\u003c\/li\u003e\n\u003cli data-section-id=\"1vyu0mw\" data-start=\"4867\" data-end=\"4923\"\u003eKeep discharge tube fittings tight and free of debris.\u003c\/li\u003e\n\u003cli data-section-id=\"wu0mof\" data-start=\"4924\" data-end=\"4989\"\u003eReplace leaking check valves promptly to prevent hard starting.\u003c\/li\u003e\n\u003cli data-section-id=\"1g4tzoz\" data-start=\"4990\" data-end=\"5040\"\u003eUse clean, dry compressed air whenever possible.\u003c\/li\u003e\n\u003cli data-section-id=\"7htrvl\" data-start=\"5041\" data-end=\"5210\" data-is-last-node=\"\"\u003eUse genuine OEM replacement parts to maintain factory fit, reliable pressure retention, and long-term air compressor performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Porter Cable","offers":[{"title":"Default Title","offer_id":53578083565931,"sku":"A19712","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/A19712.jpg?v=1784594610","url":"https:\/\/generalsprayers.com\/products\/porter-cable-a19712-1-2-npt-check-valve-genuine-oem-replacement-air-compressor-check-valve","provider":"GeneralSprayers","version":"1.0","type":"link"}