Fisher Valve
External Relief Valves

Features

• Space Saving Construction: Small relief valve size allows installation where space is limited
• Economical: Low initial cost, easy installation, and high capacity per dollar invested reduces total cost of having relief valve capabilities in your system
• Durable: Brass body construction and stainless steel spring reduce susceptibility to corrosion damage and the preset, pinned spring retainer prevents relief valve setpoint tampering

Specifications

• Container Type: ASME
• Container Connection: 1/4 in. MNPT
• Start to Discharge Pressure: 250 psig (17.2 bar)
• Flow Capacity: 310 SCFM (527 SCMH AIR)
• Maximum Allowable Relief (Inlet) Pressure: 420 psig (29 bar)
• Temperature Capabilities: -20 to 160°F (-29 to 71°C)
• Body, Poppet & Spring Retainer: Brass
• Disk: Nitrile (NBR)
• Spring and Retainer Pin: Stainless Steel