H100 Series

Fisher Valve
External Relief Valves


  • 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



  • 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
SKU: H100 Series Category: