Griffco High-Flow Pressure Relief Valves

Griffco 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 300ºF (149ºC)

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