G-Series Medium-Flow Back Pressure Valves
Griffco G-Series 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-siphon valve. Robust construction ensures reliability in the rigorous service of municipal and industrial applications.
G-Series Medium-Flow Back Pressure Valves
Valve 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 350 psi (25 bar)
- 4 optional pressure ratings (springs)
- Valve sizes from 1/2" to 4" or DN 15 to DN 100
- Tamper-resistant adjustment screw
- High-temperature option up to 300˚F (149˚C)
Griffco Benefits
- High reliability at affordable price
- Long diaphragm life
- Wide range of valve materials
- Multiple diaphragm material options
- Factory or field settable
Available Sizes
- 1/2" to 4" or DN 15 to DN 100
Wetted Materials
- PVC
- CPVC
- Polypropylene
- PVDF
- PTFE
- Halar®
- 316L SS
- Alloy 20
- Hastelloy® C
| Size | Maximum Flow | Maximum Pressure | |||||
| Pulsating | Continuous | ||||||
| Inch | Metric | GPH | LPH | GPM | LPM | PSI | BAR |
| 1/2" | DN 15 | 320 | 1,211 | 17 | 63 | 350 | 24 |
| 3/4" | DN 20 | 367 | 1,389 | 19 | 72 | 350 | 24 |
| 1" | DN 25 | 462 | 1,798 | 24 | 90 | 350 | 24 |
| 1-1/2" | DN 40 | 1,388 | 5,254 | 72 | 275 | 250 | 17 |
| 2" | DN 50 | 1,533 | 5,803 | 80 | 302 | 250 | 17 |
| 3" | DN 80 | 5,157 | 19,521 | 270 | 1,020 | 250 | 17 |
| 4" | DN 100 | 5,157 | 19,521 | 270 | 1,020 | 250 | 17 |
G-Series BPG - Data Sheets
G-Series BPG - IOM Manuals
G-Series BPG - Dimensional Drawings
G Series 2-Port @ 180° (1/2" - 1") (DN 15 - DN 25)
G Series 2-Port @ 180° (1-1/2"- 2") (DN 40 - DN 50)
G Series 2-Port @ 180° (3" - 4") (DN 80 - DN 100)
G-Series BPG - Sectional Drawings
3D CAD Drawings Now Available
Three-dimensional CAD drawings are now available for you to download and use in your pumping system designs.
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