2.5 957ZRPDA-BFG-CFM-FS

Item Number: F111800
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$9,722.25
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Assembly Size: 2 1/2 inch
  • Weight: 129.0 lb
  • Housing & Sleeve Material: 304 (Schedule 40) stainless steel
  • Features Flood Sensor with SentryPlus Alert technology
  • UL and FM Approved grooved gear operated butterfly valves
  • Includes a cubic foot per minute meter
  • Approved for horizontal Z-pattern installation
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F

Description

This 2 1/2 inch Watts 957ZRPDA-BFG-CFM-FS Reduced Pressure Detector Backflow Preventer Assembly is designed to prevent reverse flow of liquids where health hazards exist. Constructed with 304 (Schedule 40) stainless steel housing, it is extremely compact and approved for horizontal Z-pattern installation. Key features include UL and FM Approved grooved gear operated butterfly valves with tamper switches, a cubic foot per minute meter for leak detection, and a SentryPlus Alert® flood sensor to detect excessive relief valve discharge. The assembly is rated for 175 psi maximum working pressure and a temperature range of 33°F - 140°F. Item number F111800.

Help Me Connect

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit (sold separately) for activation and communication capabilities.
  • Once activated, the sensor can relay alerts for potential flooding events to a Building Management System (BMS) via RS-485 Modbus, cellular communication networks, or the Nexa® platform through Wi-Fi.
  • Without an add-on connection kit, the sensor operates as a passive component with no external communication.

Pipeline Connections

  • This assembly features grooved fittings that allow for integral pipeline adjustment, ensuring a secure and adaptable connection within your system.
  • The grooved gear operated butterfly valves are designed for compatibility with grooved piping systems.
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Additional Details

This 2 1/2 inch reduced pressure detector backflow preventer assembly is designed to stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazards exist. It features an extremely compact and lighter design than traditional models, approved for horizontal Z pattern installation.

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 standard material product, consult your local water authority, building, and plumbing codes.

Flood Detection & Alerts

  • Equipped with a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • An add-on connection kit (sold separately) is required to activate the sensor for relaying alerts to a Building Management System (BMS) via RS-485 Modbus, cellular communication, or the Nexa® platform through Wi-Fi. Without the kit, the sensor is a passive component with no communication ability.
  • The flood alert feature is compatible with BMS and cellular network communication systems.

Construction & Features

  • Constructed with a 304 (Schedule 40) stainless steel housing and sleeve.
  • Includes two independent torsion spring check modules and a differential pressure relief valve.
  • Features UL and FM Approved grooved gear operated butterfly valves with tamper switches.
  • A cubic foot per minute meter is furnished to detect underground leaks and unauthorized water use.
  • The assembly is designed with groove fittings for integral pipeline adjustment and boasts patented unseating checks for lowest pressure loss.
  • Offers unrestricted ease of serviceability and replaceable check disc rubber.
  • Includes a bottom mounted cast stainless steel relief valve.

Specifications

General

  • Product Type: Reduced Pressure Detector Assembly
  • Assembly Size: 2 1/2 inch
  • Installation Pattern: Horizontal Z-pattern

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
  • Relief Valve: Bottom mounted cast stainless steel

Performance

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

Certificates & Approvals

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

FAQs

What is the primary function of this backflow preventer assembly?

Its primary function is to prevent the reverse flow of liquids, specifically due to backpressure or backsiphonage, in systems where a potential health hazard exists.

What materials are used for the main housing and internal components?

The housing and sleeve are made from 304 (Schedule 40) stainless steel. Elastomers include EPDM, silicone, and Buna 'N', while torsion spring checks are Noryl® and stainless steel. Test cocks are Lead Free* bronze.

How does the flood sensor feature work?

The integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. To activate its communication features for alerts, an add-on connection kit (sold separately) is required.

What type of installation and connections does this assembly support?

This model is approved for horizontal Z-pattern installation. It features grooved fittings and UL and FM Approved grooved gear operated butterfly valves, making it compatible with grooved piping systems.

What are the maximum operating pressure and temperature range for this unit?

The assembly has a maximum working pressure of 175 psi (12.1 bar) and operates within a temperature range of 33°F - 140°F (0.5°C - 60°C).

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