Griffco High Flow Series

Griffco high-flow diaphragm pressure relief valves are designed to protect chemical transfer systems from overpressure damage caused by defective equipment or a blockage in the 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)