Available Sizes
1/2″ to 1″ or DN 15 to DN 25
G-Series Solid PTFE Flanged
Features
- Solid, robust, one-piece machined construction
- Complete PTFE valve body
- Flanged connection
- Leak-free design – no glue, no seals
- Anti-siphon function
- Molded Noryl top with integral hardware locking
- Composite PTFE/EPDM diaphragm
- 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)
Griffco Benefits
- High reliability at an affordable price
- Long diaphragm life
- Multiple diaphragm material options
- Factory or field settable

Wetted Materials
PTFE
SIZE | MAXIMUM FLOW PULSATING | MAXIMUM FLOW CONTINUOUS | MAXIMUM PRESSURE |
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SKU | Product | Description | Add to Project |
---|---|---|---|
Relief Valve – PTFE | |||
Relief Valve – A20 | |||
Relief Valve – A20 – 50 psi Spring – 150# FlangesPressure Set: 20 psi | |||
Relief Valve – A20 – 250 psi Spring | |||
Relief Valve – A20 – 250 psi Spring – Socket – Metal Adj Screw | |||
Relief Valve – A20 – 250 psi Spring – Viton – 150# Flanges – 90 Degree | |||
Relief Valve – A20 – 150# Flanges | |||
Relief Valve – A20 – 316SS Top | |||
Relief Valve – A20 – Socket | |||
Relief Valve – A20 – Socket – Metal Adj Screw…. |
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