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Griffco High-Flow Pressure Relief Valves

bpv high-flowGriffco High-Flow diaphragm pressure relief valves are designed to protect chemical transfer systems from over pressure damage caused by defective equipment or a blockage in the chemical feed chemical feed line. Large orifice sizes facilitate high flows and higher viscosity fluids.

Wetted Materials:

  • PVC
  • CPVC
  • PP
  • PVDF
  • PTFE
  • 316 SS
  • Alloy 20
  • Hastelloy® C

Available Sizes:

1/2", 3/4" & 1" or DN 15, DN 20 & DN 25

Features & Benefits:

  • Higher flow / lower pressure drop
  • High reliability at a low cost
  • Large orifice for high-viscosity fluids
  • 2-port design
  • Vent-able to suction line
  • Solid, robust, machined construction
  • Wide range of materials
  • Flanged and socket connection options
  • Molded Noryl top with integral hardware locking
  • Composite PTFE/EPDM diaphragm
  • Multiple diaphragm material options
  • Long diaphragm life
  • Adjustable up to 150 psi (10 bar)
  • Valve sizes from 1/2" to 1" or DN 15 to DN 25
  • Tamper-resistant adjustment screw
  • High-temperature option up to 300°F (149°C)

Download Technical Data Sheet: Imperial (US) | Metric (International)

Sizes, Flow Capacities & Pressure Ratings
Size Maximum Flow Maximum Pressure
Pulsating Continuous
Inch Metric GPH LPM GPM LPM PSI BAR
1/2" DN 15 600 2,271 30 114 250 17
3/4" DN 20 600 2,271 30 114 250 17
1" DN 25 1,000 3,785 54 204 250 17