6 957-BFG-FS

Item Number: F111789
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$15,177.94
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Connection Size: 6 inch
  • Weight: 140.0 lb
  • Housing & Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Valve Type: UL/FM Grooved Gear Operated Butterfly Valves
  • Features SentryPlus Alert® Flood Sensor
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F to 140°F
  • Compact and up to 70% lighter design
  • Lead Free* construction for wetted surfaces

Description

The WATTS Series 957 6 inch Reduced Pressure Zone (RPZ) backflow preventer offers advanced protection for potable water systems against contamination from backsiphonage and backpressure. This assembly features a durable 304 (Schedule 40) stainless steel body, UL and FM approved grooved gear operated butterfly valves with tamper switches, and a flood sensor with SentryPlus Alert® technology. Its compact, lightweight design facilitates easier installation and serviceability, approved for horizontal installation. The unit is rated for a maximum working pressure of 175 PSI and temperatures from 33°F to 140°F. Item number F111789.

Help Me Connect

Connectivity Options for Flood Sensor

  • This backflow preventer's integrated flood sensor is designed to detect excessive water discharge.
  • To activate full communication features and relay alerts, an add-on sensor connection kit is required (sold separately).
  • Connection kits offer compatibility with Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
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Additional Details

The WATTS 6 inch Series 957 Reduced Pressure Zone (RPZ) backflow preventer protects potable water systems from contamination caused by backsiphonage or backpressure, particularly in health hazard applications. This compact assembly features UL Classified and FM Approved grooved gear operated butterfly valves with tamper switches and an integrated flood sensor.

Design and Construction

  • Features a 304 (Schedule 40) stainless steel housing and sleeve for robust durability.
  • Equipped with patented torsion spring checks designed for lowest pressure loss.
  • Groove fittings facilitate integral pipeline adjustment and ease of installation.
  • Designed for unmatched ease of serviceability and is up to 70% lighter than traditional designs.
  • Includes a corrosive-resistant, bottom-mounted cast stainless steel relief valve.

Flood Detection and Alerts

  • Incorporates a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • When paired with an add-on sensor connection kit (sold separately), the flood sensor activates to relay alerts for potential flooding events.
  • Connection kit options include compatibility with BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
  • A connection kit is required to activate the flood sensor's communication features; without it, the sensor operates as a passive component.

Specifications

  • Connection Size: 6 inch
  • Housing & Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Valve Type: Grooved Gear Operated Butterfly Valves with Tamper Switch
  • Relief Valve Material: Cast Stainless Steel
  • Check Discs: Reversible Silicone or EPDM
  • Elastomers: EPDM, Silicone, Buna-N
  • Torsion Spring Checks: Noryl®, Stainless Steel
  • Test Cocks: Lead Free* Bronze Body
  • Pins & Fasteners: 300 Series Stainless Steel
  • Springs: Stainless Steel
  • Maximum Working Pressure: 175 PSI (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)

Certificates & Approvals

  • AWWA C511-97
  • ASSE 1013
  • CSA B64.4
  • UL Classified
  • FM Approved
  • NSF Certified to NSF/ANSI 61-G
  • Approved by FCCCHR-USC

FAQs

What is the primary purpose of the WATTS Series 957 Reduced Pressure Zone assembly?

Its primary purpose is to protect potable water systems from contamination by preventing the reverse flow of non-potable liquids due to backsiphonage or backpressure, especially in health hazard applications.

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 kit, it can relay signals for corrective action, helping to prevent potential flooding and damage.

What type of shutoff valves are included with this 6-inch model?

This 6-inch model includes UL Classified and FM Approved grooved gear operated butterfly valves with tamper switches, designed for reliable operation and easy integration.

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

The WATTS Series 957 is designed to operate safely at a maximum working pressure of 175 PSI (12.1 bar) and within a temperature range of 33°F to 140°F (0.5°C to 60°C).

Is an additional connection kit required for the flood sensor?

Yes, an add-on sensor connection kit is required to activate the full communication features of the flood sensor, allowing it to relay alerts to facility personnel or integrate with other systems like BMS or BAS. Without the kit, the sensor is passive.

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