957RPDA
Discontinued - Replaced By: 957RPDA-FS
Reduced Pressure Detector Assembly Backflow Preventers, Stainless Steel
Series 957RPDA, 957NRPDDA, 957ZRPDA Reduced Pressure Detector Assemblies prevent the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply. The 957RPDA incorporates a meter to detect ground leaks and unauthorized illegal taps, greatly reducing annual water expenses. It consists of a compact, stainless steel body with stainless steel internal parts, two check valves, a pressure-differential relief valve, shutoff valves, torsion spring checks and relief valve, and bronze, nickel-plated test cocks. Series 957RPDA, 957NRPDDA, 957ZRPDA is 70% lighter than traditional designs and is ideal for health hazard cross-connection, such as on fire sprinkler systems. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi (12.06 bar).
Flood alert feature available with add-on retrofit connection kit, compatible with BMS and cellular communication.
Features
- Extremely compact and light design
- Available with quarter-turn ball valve shutoffs or grooved butterfly valve shutoffs
- Torsion spring checks provide lowest pressure loss
- Groove fittings allow integral pipe adjustment
Literature
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- 957, 957RPDA, LF957RPDA - Repair Kits Parts Breakdown
- Brochure - Backflow Prevention and Flow Control Plumbing
- Brochure - Backflow Protection with Series 957, 957RPDA
- Installation Instructions - 957, 957RPDA, LF957RPDA
- Price List - Backflow Prevention Repair Kits & Service Parts
- Specification Sheet - 957RPDA, 957NRPDA, 957ZRPDA
Select a Model
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Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
| ASSE | CSA | FM Approvals | NSF |
| UL | ULC | USC | WQA |