Back To Top
Crosby JB and JPV­A Large Orifice Pressure Relief Valve
JB and JPV-A Large Orifice Pressure Relief Valve
A large orifice pressure relief valve engineered to provide high quality, dependable overpressure protection for air, gas, vapor and steam applications


  • Ten size product range is the broadest available.
  • Replaces multiple smaller valves to reduce installation and labor costs.
  • Fewer discharge lines.
  • Fewer inlet connections.
  • Reduced maintenance costs.
  • Fatigue-resistant bellows material.
  • Manufactured to ASME Boiler and Pressure Vessel Code, Section VIII
  • Air and steam capacities certified by the National Board of Boiler and Pressure Vessel Inspectors (UV and NB).


Interested in attending a training class?

Visit our Education Course Listing.