Model 504 - 6,000 PSI Adjustable Relief Valve

*The default selection shown above is generally good in stock, and can ship immediately. Choosing non-standard options may increase lead time 3-5 days.

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GENERAL The model 504 is an economical, small, high pressure relief valve having excellent set pressure control over a large pressure range to 6000 PSI. It stays bubble tight to within a few PSI of set pressure and reseals bubble tight even after many vent cycles. Safety wire holes are provided for optional locking of set pressure adjustment. SPECIFICATIONS • Set pressure ----- adj. 300 to 6000 PSI • Leakage bubble tight • Max. fiow (air) --- 100 SCFM at 3000 PSI; 50 SCFM at 1500 PSI • Equivalent orifice — .078 inch dia. gas or liquid • Inlet ----- 1/4 male NPT   Outlet side vent • Size 0.875" hex by 2.33" long • Temperatures--------- -40F to 160F • Materials bronze, anodized aluminum, & Viton FEATURES • Soft seal provides excellent sealing and resealing • Unique design eliminates seal damage or extrusion • Easy infield maintenance • Zero seal hysteresis design assures excellent repeatability without lubricants TYPICAL APPLICATIONS • Discharge and interstage reliefs on small high pressure compressors • Reliefs on charging lines, regulators, and manifolds • Hydraulic system and accumulator reliefs • Many other safety relief valve applications

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