6 957RPDA-OSY-GPM-FS

Item Number: F111629
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$14,489.00
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Product Type: Reduced Pressure Detector Assembly Backflow Preventer
  • Weight: 423.0 lb
  • Size: 6 inch
  • Housing Material: 304 (Schedule 40) Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 140°F
  • Features SentryPlus Alert® Flood Sensor
  • Includes UL/FM Approved OSY Shutoff Valves
  • Comes with Gallon Per Minute Meter

Description

The Watts 957RPDA 6 inch Reduced Pressure Detector Assembly Backflow Preventer safeguards potable water systems from contamination due to back-siphonage and backpressure, suitable for health hazard applications. It features a compact 304 stainless steel housing, UL/FM approved OSY gate valves, and a metered bypass for detecting leaks. An integrated flood sensor with SentryPlus Alert® technology detects excessive relief valve discharge, relaying alerts when paired with an add-on connection kit. With a 175 PSI max pressure and 33-140°F temperature range, it ensures reliable performance and is approved for horizontal installation.

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Flood Sensor Connectivity

This backflow assembly features an integrated flood sensor with SentryPlus Alert® technology. To activate and utilize the flood alert capabilities, an add-on sensor connection kit is required. Connection kit options enable communication with various systems:

  • BMS (Building Management Systems)
  • Cellular Communication Networks
  • Sensor Control Monitor, which allows integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi connectivity.

Without a connection kit, the sensor is a passive component with no communication capabilities. Watts is not responsible for the failure of alerts due to connectivity issues, power outages, or improper installation.

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Additional Details

This 6 inch Watts 957RPDA Reduced Pressure Detector Assembly backflow preventer protects potable water systems from contamination caused by back-siphonage and backpressure, making it ideal for health hazard applications. It also monitors unauthorized water use within fire protection systems. Its compact design is 70% lighter than traditional models and approved for horizontal installation.

The assembly features a stainless steel body, torsion spring check valves, resilient seated gate valves with outside stem and yoke, test cocks, and a corrosive resistant bottom-mounted pressure relief valve. It comes equipped with a gallon per minute meter for detecting underground leaks and unauthorized water usage.

A flood sensor with SentryPlus Alert® technology is integrated to detect excessive water discharges from the relief valve. When paired with an add-on connection kit, this sensor activates to relay alerts for potential flooding events to facility personnel, helping to limit flooding and costly damage.

WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing, consult your local water authority, building, and plumbing codes.

Features

  • Extremely compact design, 70% lighter than traditional designs
  • 304 (Schedule 40) stainless steel housing and sleeve
  • Groove fittings allow integral pipeline adjustment
  • Patented torsion spring check provides lowest pressure loss
  • Unmatched ease of serviceability with replaceable check disc rubber
  • UL Classified and FM Approved outside stem and yoke resilient seated gate valves
  • Bottom mounted cast stainless steel relief valve
  • Metered bypass (gallon per minute meter) to detect leakage or theft of water
  • Flood sensor with SentryPlus Alert® technology on relief valve for flood detection
  • Flood alert feature activated with add-on sensor connection kit (compatible with BMS and cellular network communication, or Sensor Control Monitor for BAS/Nexa® platform via Wi-Fi)

Specifications

General

  • Product Type: Reduced Pressure Detector Assembly Backflow Preventer
  • Model: 957RPDA
  • Size: 6 inch
  • Installation: Horizontal
  • Relief Valve: Bottom Mounted, Cast Stainless Steel
  • Shutoff Valves: UL/FM Approved OSY Resilient Seated Gate Valves
  • Bypass: Metered (Gallon Per Minute Meter)
  • Flood Sensor: Yes, with SentryPlus Alert® technology

Materials

  • Housing & Sleeve: 304 (Schedule 40) Stainless Steel
  • Elastomers: EPDM, Silicone, Buna 'N'
  • Torsion Spring Checks: Noryl®, Stainless Steel
  • Check Discs: Reversible Silicone or EPDM
  • Test Cocks: Lead Free* Bronze Body
  • Pins & Fasteners: 300 Series Stainless Steel
  • Springs: Stainless Steel

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)

Certificates & Approvals

  • ASSE 1047
  • CSA B64.4
  • UL Classified
  • FM Approved
  • AWWA C511-97
  • Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)

FAQs

What is the primary function of the Watts 957RPDA backflow preventer?

Its primary function is to protect potable water systems from contamination due to back-siphonage and backpressure, especially in health hazard applications. It also monitors for unauthorized water use in fire protection systems.

Can this backflow preventer be used for drinking water systems in the United States?

No, it is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Always consult local water authorities and codes.

How does the integrated flood sensor work?

The flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. When connected with an add-on sensor kit, it relays signals to facility personnel for corrective action, helping to prevent flooding.

What materials are used in the construction of the 957RPDA assembly?

The housing and sleeve are made from 304 (Schedule 40) stainless steel. Elastomers include EPDM, silicone, and Buna 'N'. Test cocks are Lead Free* bronze, and other components like pins, fasteners, and springs are stainless steel.

What is the maximum operating pressure and temperature range for this backflow preventer?

This backflow preventer has a maximum working pressure of 175 psi (12.1 bar) and operates within a temperature range of 33°F to 140°F (0.5°C to 60°C).

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