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. Larger orifice size makes the valves ideal for use with higher viscosity fluids.
Available Sizes
1/2″, 3/4″, 1″, 1-1/2″, & 2″ or DN 15, DN 20, DN 25, DN 40, & DN 50
High-Flow
Features
- Anti-siphon function
- Solid, robust, machined construction
- Flanged, union, threaded, and socket connection options
- Molded Noryl top with integral hardware locking
- 316L SS metal valve and top options
- Molded PTFE/EPDM diaphragm
- Adjustable up to 250 psi (17 bar)
- 4 optional pressure ratings (springs)
- Valve sizes from 1/2″ to 2″ or DN 15 to DN 50
- Tamper-resistant adjustment screw
- High-temperature option up to 300°F (149°C)
Griffco Benefits
- High reliability at an affordable price
- Long diaphragm life
- Wide range of valve materials
- Multiple diaphragm material options
- Factory or field settable
Wetted Materials
PVC
CPVC
Polypropylene
PVDF
PTFE
316L SS
Alloy 20
Hastelloy® C
| SIZE | MAXIMUM FLOW PULSATING | MAXIMUM FLOW CONTINUOUS | MAXIMUM PRESSURE |
| TITLE | DESCRIPTION | DATE MODIFIED | DOWNLOAD |
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SKU | Product | Description | Add to Project |
|---|---|---|---|
 BPHF105S1F | 316 SS 150# Flanges. 50 psi Spring..Pressure Set: 20 psi | ||
BPHF105S1H | 316SS – 50 psi Spring – Hypalon..Pressure Set: 20 psi | ||
BPHF105S1OSS | 316SS – 50 psi Spring – 316SS Top..Pressure Set: 20 psi | ||
BPHF105S1S | 316SS – 50 psi Spring – Socket (5″ Dia)..Pressure Set: 20 psi | ||
BPHF105S1TVOSS | 316SS – 50 psi Spring – PTFE/Viton – 316SS Top..Pressure Set: 20 psi | ||
BPHF105S2 | 316SS – 250 psi Spring | ||
BPHF105S2OSS | 316SS – 250 psi Spring – 316SS Top (5″ Dia.) | ||
BPHF105S2V | 316SS – 250 psi Spring – Viton | ||
BPHF105SF | 316 SS 150# Flanges | ||
BPHF105SFMSS300 | 316SS – 300# Flanges – 316SS Top |