Griffco G-Series diaphragm flanged back pressure valves with solid PTFE flanges 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-siphon valve. Robust construction ensures reliability in the rigorous service of municipal and industrial applications.
Available Sizes
1/2″ to 1″ or DN 15 to DN 25
G-Series Solid PTFE Flanged
Features
- Solid, robust, one-piece machined construction
- 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 |
| TITLE | DESCRIPTION | DATE MODIFIED | DOWNLOAD |
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SKU | Product | Description | Add to Project |
|---|---|---|---|
 BPT050S903 | 316 SS – Steel Adj Screw | ||
BPT050SB | 316SS – BSP Threads | ||
BPT050SS | 316 SS – Socket | ||
BPT050T | PTFE | ||
BPTA050CPB | CPVC – BSP Threads c/w Adjustment Knob – 0 – 90 psi | ||
BPTA050P | PVC – c/w Adjustment Knob – 0 – 90 psi | ||
BPTA050P1 | PVC – c/w Adjustment Knob – 50 psi – Pressure Set: 25 psi | ||
BPTA050P1V | PVC – c/w Adjustment Knob – 50 psi – Viton – Pressure Set: 25 psi | ||
BPT025CP | CPVC |