BFPX - Back Flow Preventer
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN15-DN250
- Pressure Class
- PN10 / PN16
- Standards
- EN 1717, EN 12729
- End connection
- Threaded BSP · EN 1092-2 flange
Available sizes
Standard DN sizes covered by this product. Confirmed at quote.
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- body
Pressure-temperature rating
Maximum working pressure at each temperature, per pressure class.
| Class | Temperature | Max pressure |
|---|---|---|
| PN10 | -10°C | 10 bar |
| PN10 | 80°C | 10 bar |
| PN16 | -10°C | 16 bar |
| PN16 | 80°C | 16 bar |
Dimensions per size(11 sizes)
| Size | L | OD_PN10 | OK_PN10 | OD_PN16 | OK_PN16 | Weight |
|---|---|---|---|---|---|---|
| DN50 | 230 mm | 165 mm | 125 mm | — | — | — |
| DN65 | 236 mm | 185 mm | 145 mm | — | — | — |
| DN80 | 276 mm | 200 mm | 160 mm | — | — | — |
| DN100 | 298 mm | 220 mm | 180 mm | — | — | — |
| DN125 | 303 mm | 250 mm | 210 mm | — | — | — |
| DN150 | 364 mm | 285 mm | 240 mm | — | — | — |
| DN200 | 470 mm | 340 mm | 295 mm | — | — | — |
| DN250 | 530 mm | 395 mm | 350 mm | 405 mm | 355 mm | — |
| DN300 | 580 mm | 445 mm | 400 mm | 460 mm | 410 mm | — |
| DN350 | 690 mm | 505 mm | 460 mm | 520 mm | 470 mm | — |
| DN400 | 770 mm | 565 mm | 515 mm | 580 mm | 525 mm | — |
Technical drawings(2 pages)
Approvals
Features
- The BFPX provides reduced pressure zone (RPZ) backflow prevention to EN 1717 for fluid category 4 and 5 hazards
- The assembly comprises two independent check valves with a monitored relief valve in the zone between them
- If either check valve fails, the relief valve opens to atmosphere, preventing contaminated downstream water from siphoning back into the potable supply
- Mandatory for connections to industrial processes, irrigation and commercial premises under current European water regulations
Description
RPZ and DCV assemblies to EN 1717 for potable protection. The BFPX provides reduced pressure zone (RPZ) backflow prevention to EN 1717 for fluid category 4 and 5 hazards. The assembly comprises two independent check valves with a monitored relief valve in the zone between them. If either check valve fails, the relief valve opens to atmosphere, preventing contaminated downstream water from siphoning back into the potable supply. Mandatory for connections to industrial processes, irrigation and commercial premises under current European water regulations.
Available pressure classes
Pressure classes this product is rated to.