{"product_id":"thomas-air-pac-638263-super-check-in-tank-check-valve-1-2-comp-x-1-2-mpt","title":"THOMAS AIR-PAC 638263 SUPER CHECK IN-TANK CHECK VALVE 1\/2 COMP X 1\/2 MPT","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"637\"\u003eThe Thomas Air-Pac 638263 Super Check In-Tank Check Valve is designed to prevent compressed air from flowing back into the compressor pump while allowing unrestricted airflow into the air receiver tank. Commonly installed on reciprocating air compressors in industrial workshops, manufacturing facilities, automotive service centers, and OEM compressed air systems. Maintenance technicians, compressor service professionals, and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this check valve for routine maintenance, compressor repairs, retrofits, and replacement of worn or leaking in-tank check valves. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"639\" data-end=\"656\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"658\" data-end=\"1225\"\u003eThe Thomas Air-Pac 638263 is a heavy-duty Super Check in-tank check valve featuring a 1\/2-inch compression inlet and a 1\/2-inch male NPT outlet. Constructed with a one-piece brass body, stainless steel spring, and glass-filled PTFE poppet, it delivers dependable sealing performance while preventing tank pressure from returning to the compressor head. The valve includes a standard 1\/8-inch unloader port, making it ideal for Thomas Air-Pac and other reciprocating air compressors requiring a high-flow, serviceable check valve. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1227\" data-end=\"1256\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1258\" data-end=\"2118\"\u003e• Brand: Thomas Air-Pac\u003cbr data-start=\"1281\" data-end=\"1284\"\u003e• Part Number: 638263\u003cbr data-start=\"1305\" data-end=\"1308\"\u003e• Product Type: Super Check In-Tank Check Valve\u003cbr data-start=\"1355\" data-end=\"1358\"\u003e• Inlet Connection: 1\/2 in. Compression\u003cbr data-start=\"1397\" data-end=\"1400\"\u003e• Outlet Connection: 1\/2 in. Male NPT\u003cbr data-start=\"1437\" data-end=\"1440\"\u003e• Unloader Port: 1\/8 in. NPT\u003cbr data-start=\"1468\" data-end=\"1471\"\u003e• Body Material: Brass\u003cbr data-start=\"1493\" data-end=\"1496\"\u003e• Spring Material: Stainless Steel\u003cbr data-start=\"1530\" data-end=\"1533\"\u003e• Poppet Material: Glass-Filled PTFE (Fluoropolymer)\u003cbr data-start=\"1585\" data-end=\"1588\"\u003e• Design: One-Piece Serviceable Check Valve\u003cbr data-start=\"1631\" data-end=\"1634\"\u003e• Maximum Working Pressure: 450 PSI\u003cbr data-start=\"1669\" data-end=\"1672\"\u003e• Maximum Operating Temperature: 400°F (204°C)\u003cbr data-start=\"1718\" data-end=\"1721\"\u003e• Maximum Recommended Flow: 20 SCFM\u003cbr data-start=\"1756\" data-end=\"1759\"\u003e• Hex Size: 7\/8 in.\u003cbr data-start=\"1778\" data-end=\"1781\"\u003e• Function: Prevents reverse airflow from the air tank while allowing compressor discharge into the receiver tank\u003cbr data-start=\"1894\" data-end=\"1897\"\u003e• Features: Eight discharge holes for quieter operation, serviceable design for cleaning and repair, factory-tested for backflow leakage performance, corrosion-resistant construction. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2120\" data-end=\"2144\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2146\" data-end=\"2267\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Campbell Hausfeld CV223300AV\u003cbr data-start=\"2176\" data-end=\"2179\"\u003e• Campbell Hausfeld VH611201AJ\u003cbr data-start=\"2209\" data-end=\"2212\"\u003e• Speedaire 6X213\u003c\/p\u003e","brand":"THOMAS","offers":[{"title":"New","offer_id":51713992098094,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_e72da634-62f9-4dd6-b24d-c9b590bd2aea.jpg?v=1770413193","url":"https:\/\/plgautomation.com\/products\/thomas-air-pac-638263-super-check-in-tank-check-valve-1-2-comp-x-1-2-mpt","provider":"PLG Automation ","version":"1.0","type":"link"}