957
Reduced Pressure Valve Assembly Backflow Preventers with Flood Sensor - Sizes 2 1/2 to 10 IN
Series 957 reduced pressure zone assemblies feature a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. Connection kits are available for BMS and cellular communication.
This series prevents the reverse flow of contaminated water caused by backsiphonage or backpressure from entering the potable water supply. Ideal for protection at health hazard cross-connections or for containment at the service line entrance. Its compact modular design facilitates maintenance and assembly access. Check with local water authorities for installation requirements.
To learn more visit: https://www.watts.ca/floodprotectionsystem
Features
- Sensor on the relief valve for flood detection
- Extremely compact and lightweight design is easy to install and service
- Bottom-mounted cast stainless steel relief valve. Replaceable check disc rubber
- Patented torsion spring checks provide lowest pressure loss
- Health hazard protection level
- Flood alert feature activated with add-on connection kit, compatible with BMS and cellular communication
Literature
-
- 957, 957RPDA, LF957RPDA - Repair Kits Parts Breakdown
- Brochure - Backflow Prevention - Cross-Connection Control Handbook
- Brochure - Backflow Prevention and Flow Control Plumbing
- Brochure - Backflow Protection with Series 957-FS, 957RPDA-FS, LF957RPDA-FS
- Brochure - Backflow Retrofit Spool Simple Order Form
- Flyer - Flood Detection for RPZ/RPDA Backflow Preventers with Flood Sensor
- Flyer - Flood Detection for RPZ/RPDA Backflow Preventers with Flood Sensor (French)
- Installation Instructions - 957, 957RPDA, LF957RPDA
- Installation Instructions - BMS Flood Sensor Connection Kit
- Installation Instructions - BMS Sensor Retrofit Connection Kit - 994, 957, 957RPDA, LF957RPDA, C400, C500, LFC500, 4000SS, 5000SS
- Installation Instructions - Cellular Flood Sensor Connection Kit
- Installation Instructions - Cellular Sensor Retrofit Connection Kit - 994, 957, 957RPDA, LF957RPDA, C400, C500, LFC500, 4000SS, 5000SS
- Installation Instructions - SentryPlus Alert Technology (June 2020 - Present)
- Relief Valve Discharge Rates - 009, 909, 919, 957, 994
- Specification Sheet - 957
- Specification Sheet - 957 (French)
- Specification Sheet - 957 (Spanish)
- Specification Sheet - PVS-7000
- Specification Sheet - SentryPlus Alert Upgrade Kit
- Specification Sheet - Watts Air Gaps, Elbows and Test Cocks
Archived
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 |