{"product_id":"conrader-srv390-stainless-steel-soft-seat-safety-relief-valve-1-2-npt","title":"Conrader SRV390 Stainless Steel Soft-Seat Safety Relief Valve — 1\/2\" NPT","description":"\u003cp\u003eThe Conrader SRV390 is a high-flow soft-seat safety relief valve in all–stainless steel construction, protecting air compressors, receiver tanks, and compressed-air or gas systems from overpressure. The stainless body and elastomer soft seat deliver bubble-tight reseating and strong corrosion resistance, making this version ideal for washdown, marine, and chemically aggressive environments where brass would corrode.\u003c\/p\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Conrader SRV390 soft-seat (elastomer-sealed) safety relief valve\u003c\/li\u003e\n\u003cli\u003eInlet connection: 1\/2\" NPT\u003c\/li\u003e\n\u003cli\u003eSet pressure range: 25–300 PSI, factory-set — select your setting below\u003c\/li\u003e\n\u003cli\u003eConstruction: ASTM A582 stainless steel seat, cap, and piston; 17-7 stainless steel spring\u003c\/li\u003e\n\u003cli\u003eSeal: Silicone (−65 to 400°F)\u003c\/li\u003e\n\u003cli\u003eFlow factor (slope method): 1.55; flow capacity up to ~534 SCFM at 300 PSI\u003c\/li\u003e\n\u003cli\u003eSeat leakage: bubble-tight per API 527\u003c\/li\u003e\n\u003cli\u003eOperating temperature: −65 to 400°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCertifications\u003c\/h3\u003e\n\u003cp\u003eDesigned, manufactured, and certified under Conrader's ISO 9001 system to ASME Boiler \u0026amp; Pressure Vessel Code Section XIII, and registered for use in Canada (CSA B51 \/ CRN).\u003c\/p\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003eReciprocating and rotary screw air compressors, larger air receiver tanks, compressed-gas systems, and OEM pneumatic equipment — particularly where a corrosion-resistant stainless valve with higher flow is required.\u003c\/p\u003e\n\u003cp\u003eThe Conrader SRV390 stainless steel soft-seat safety relief valve delivers ASME-certified overpressure protection in a 1\/2\" NPT body, with factory pressure settings from 25 to 300 PSI to match your system.\u003c\/p\u003e","brand":"Conrader","offers":[{"title":"66 CFM \/ 25 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