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.
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 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 affordable price
- Long diaphragm life
- Wide range of valve materials
- Multiple diaphragm material options
- Factory or field settable
Available Sizes
- 1/2", 3/4", 1", 1-1/2" & 2"or DN 15, DN 20, DN 25, DN 40 & DN 50
Wetted Materials
- PVC
- CPVC
- Polypropylene
- PVDF
- PTFE
- 316L SS
- Alloy 20
- Hastelloy® C
High-Flow BPHF - Specifications
| Size | Maximum Flow | Maximum Pressure | |||||
| Pulsating | Continuous | ||||||
| Inch | Metric | GPH | LPH | GPM | LPM | PSI | BAR |
| 1/2" | DN 15 | 600 | 2,271 | 30 | 114 | 250 | 17 |
| 3/4" | DN 20 | 600 | 2,271 | 30 | 114 | 250 | 17 |
| 1" | DN 25 | 1,000 | 3,785 | 54 | 204 | 250 | 17 |
| 1 1/2" | DN 40 | 5,157 | 19,521 | 270 | 1,022 | 250 | 17 |
| 2" | DN 50 | 5,157 | 19,521 | 270 | 1,022 | 250 | 17 |
High-Flow BPHF - Data Sheets
| Title | Description | Date modified | Download |
|---|---|---|---|
| Data Sheet BPHF (US) | Imperial | 06-28-2021 | Download |
| Data Sheet BPHF (Intl) | Metric | 09-14-2020 | Download |
| Data Sheet BPHF (Spanish) | Metric | 09-14-2020 | Download |
High-Flow BPHF - IOM Manuals
| Title | Description | Date modified | Download |
|---|---|---|---|
| IOM Manual BPHF (US) | Imperial | 09-14-2020 | Download |
High-Flow BPHF - Dimensional Drawings
High-Flow 2-Port @ 180° (1/2" - 3/4") (DN 15 - DN 20)
| Title | Description | Date modified | Download |
|---|---|---|---|
| Dim BPHFF 2Port@180 Flanged Metric | DN 15 - DN 20 | 08-24-2020 | Download |
High-Flow 2-Port @ 180° (1") (DN 25)
| Title | Description | Date modified | Download |
|---|---|---|---|
| Dim BPHFF 2Port@180 Flanged Metric | DN 25 | 08-24-2020 | Download |
GRIFFCO PRODUCTS
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