High-Flow back pressure and pressure relief valves

Griffco High-Flow diaphragm back pressure valves are designed to enhance the performance of chemical feed systems by applying a continuous back pressure to the chemical feed pump, while also acting as an anti-syphon valve. The robust construction guarantees a continious reliability at heavy duty performances.
Larger orifice size makes the valves ideal for use with higher viscosity fluids.

Liquid contact materials:

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

Available sizes:

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

Features and benefits:

• High reliability at an affordable price
• Anti-syphon function
• Solid, robust, (machined) construction
• Wide range of materials
• Flanged-, union-, threaded-, and weld/glue connections
• Injection moulded Noryl top with integrated pressure lock
• RVS 316L metall body and top-options
• Moulded PTFE / EPDM-diaphragm
• Several materialoptions for diaphragms
• Long lifetime diaphragm
• Adjustable up to 17 bar
• 4 optional pressure ranges (springs)
• Connection sizes from 1/2“ up to 1” or DN 15 up to DN 25
• Tamper proof set screw
• High temperature option up to 150 ° C
• Factory adjusted pressure or field adjustable