{"product_id":"kingston-118css-hard-seat-brass-safety-relief-valve-asme-high-flow","title":"Kingston 118CSS Hard Seat Brass Safety Relief Valve — ASME High Flow, 25–300 PSI","description":"\u003cp\u003eThe Kingston 118CSS is an ASME code-certified, high-flow brass safety relief valve built for compressed air systems, air receivers, and pressure vessels. Its precision-machined hard seat with a stainless steel ball and spring delivers reliable, repeatable relief, and the pull ring allows quick manual testing. Every valve is factory set and tested to your specified pressure, and is National Board stamped (UV + NB).\u003c\/p\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBody: precision-machined brass with a hard seat\u003c\/li\u003e\n\u003cli\u003eInternals: stainless steel ball and spring\u003c\/li\u003e\n\u003cli\u003eCertification: ASME code certified, stamped UV + National Board (NB); CRN registered in all Canadian provinces and territories\u003c\/li\u003e\n\u003cli\u003eSet pressure range: 25 to 300 PSI (factory set and tested)\u003c\/li\u003e\n\u003cli\u003eSet pressure tolerance: ±2 PSI below 70 PSI; ±3% at 70 PSI and above\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -20°F to 400°F (-29°C to 204°C)\u003c\/li\u003e\n\u003cli\u003eConnection: male NPT, available in 1\/4\", 3\/8\", 1\/2\", 3\/4\" and 1\" sizes\u003c\/li\u003e\n\u003cli\u003eManual test: lift\/pull ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to order\u003c\/h3\u003e\n\u003cp\u003eSelect your NPT connection size above, then specify your required set pressure (any value from 25 to 300 PSI) in the order notes. The valve will be factory set and tested to that pressure before shipping. Larger ports offer higher relieving capacity — orifice sizes range from .295\" (1\/4\") up to .578\" (3\/4\" and 1\").\u003c\/p\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003eAir compressors and air receiver tanks, compressed air piping and distribution, pressure vessels, pumps, and general industrial overpressure protection wherever a code-stamped relief valve is required.\u003c\/p\u003e\n\u003cp\u003eThe Kingston 118CSS hard seat brass safety relief valve combines ASME-certified protection, high flow capacity, and durable brass-and-stainless construction in 1\/4\" through 1\" NPT sizes — a dependable overpressure safeguard for compressed air and industrial systems.\u003c\/p\u003e","brand":"Kingston","offers":[{"title":"1\/4\" NPT","offer_id":54270582915347,"sku":"118CSS-2-PSI","price":16.0,"currency_code":"USD","in_stock":true},{"title":"3\/8\" NPT","offer_id":54270582948115,"sku":"118CSS-3-PSI","price":22.67,"currency_code":"USD","in_stock":true},{"title":"1\/2\" NPT","offer_id":54270582980883,"sku":"118CSS-4-PSI","price":29.33,"currency_code":"USD","in_stock":true},{"title":"3\/4\" NPT","offer_id":54270583013651,"sku":"118CSS-5-PSI","price":54.17,"currency_code":"USD","in_stock":true},{"title":"1\" NPT","offer_id":54270583046419,"sku":"118CSS-6-PSI","price":59.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/kingston_118css.png?v=1781115477","url":"https:\/\/aircompressorstore.com\/products\/kingston-118css-hard-seat-brass-safety-relief-valve-asme-high-flow","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}