1 1/2" 975XL3 BFSS RP

Item Number: 112-975XL3BFSS
1 5
$7,266.02
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Brand - Wilkins
  • Product Type: Reduced Pressure Principle Backflow Preventer
  • Weight: 18.0 lb
  • Nominal Size: 1 1/2 inch
  • Maximum Working Pressure: 175 PSI
  • All-bronze body for durability and corrosion resistance
  • EZSwap® stacked checks with top access for easy maintenance
  • Remote monitoring switches included for fire systems
  • ASSE® Listed 1013, CUPC® Listed, CSA® Certified CSA B64.4
  • For non-potable water applications only

Description

The Zurn Wilkins 975XL 1 1/2" Reduced Pressure Principle Backflow Preventer protects non-potable water supplies from contamination due to backsiphonage and backpressure. Its compact all-bronze body ensures durability and easy installation in limited spaces. Featuring EZSwap® stacked checks with top access and twist-lock connections, maintenance is simplified, reducing labor and repair time. Remote monitoring switches are included for fire system integration. This model is ASSE® Listed 1013, CUPC® Listed, and CSA® Certified CSA B64.4, with a maximum working pressure of 175 PSI and temperature of 180°F. Item number 112-975XL3BFSS.

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Connections and Installation

This Zurn Wilkins 975XL backflow preventer features threaded end connections conforming to ANSI B1.20.1 for secure integration into your water lines. Installation must comply with local codes, manufacturer's instructions, and the latest edition of the Uniform Plumbing Code.

The unit should be mounted at a minimum of 12 inches (305mm) and a maximum of 30 inches (762mm) above adequate drains, ensuring sufficient side clearance for testing and maintenance. It is crucial that no part of the unit can be submerged, and it is intended exclusively for non-potable applications.

The wye pattern design with its short lay length facilitates easier installation in compact spaces. Test ports are conveniently located on the valve's centerline to simplify setup and routine checks.

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Additional Details

The Zurn Wilkins 975XL Reduced Pressure Principle Backflow Preventer is designed for installation on water lines to protect against backsiphonage and backpressure of contaminated water into the potable water supply. This 1 1/2 inch model provides high health hazard protection for non-potable applications.

Its compact, wye pattern design and all-bronze body make it suitable for installation in tight spaces and ensure durability.

Key Features

  • Compact Design: Shortest bronze backflow valve on the market for installation versatility, ideal for limited spaces.
  • Durable Construction: Features an all-bronze body for enhanced corrosion resistance and long service life.
  • Easy Maintenance: EZSwap® stacked checks with top access and twist-lock connections speed up repairs and replacements. The first and second checks are accessible for maintenance without removing the relief valve or the entire device from the line.
  • Convenient Testing: Test ports are located on the valve's centerline, simplifying installation and testing procedures.
  • Remote Monitoring: Includes remote monitoring switches suitable for fire systems.
  • High Performance: Rated for a maximum working water pressure of 175 PSI and a maximum working water temperature of 180°F.

This product is for non-potable applications only.

Specifications

General

  • Product Type: Reduced Pressure Principle Backflow Preventer
  • Model: 975XL
  • Nominal Size: 1 1/2 inch
  • End Connections: Threaded (ANSI B1.20.1)
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 180°F
  • Hydrostatic Test Pressure: 350 PSI
  • Relief Valve Discharge Port (1 1/4" - 2" models): 1.19 sq. in.

Materials

  • Main Valve Body: Cast Bronze ASTM B 584
  • Access Covers: Cast Bronze ASTM B 584
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: Silicone, Buna Nitrile
  • Polymers: Noryl™
  • Springs: Stainless Steel, 300 series

Certificates & Approvals

  • ASSE® Listed 1013
  • CUPC® Listed
  • UL® Classified (less shut-off valves or with OS&Y valves)
  • C-UL® Classified
  • CSA® Certified CSA B64.4
  • AWWA compliant C511
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • NYC MEA 425-89-M VOL 3

Dimensions (Approximate)

  • Overall Length (A): 17 3/8 inch (441 mm)
  • Centerline to Bottom (B): 10 15/16 inch (278 mm)
  • Bottom Clearance (C): 2 3/4 inch (70 mm)
  • Overall Height (D): 3 1/2 inch (89 mm)
  • Depth (E): 5 inch (127 mm)
  • Connection to Test Cock (F): 6 3/4 inch (171 mm)
  • Total Width (G): 24 1/16 inch (611 mm)
  • Weight (with ball valves): 28 lbs (12.7 kg)

FAQs

What is the primary use of the Zurn Wilkins 975XL backflow preventer?

The 975XL is designed to protect potable water supplies from contamination caused by backsiphonage and backpressure of non-potable water, specifically in applications where a potential health hazard exists. It is strictly for non-potable applications.

What materials are used in the construction of this backflow preventer?

The main valve body and access covers are made of cast bronze (ASTM B 584). It features stainless steel fasteners and springs, Noryl™ polymers, and silicone/Buna Nitrile elastomers.

What certifications and approvals does the 1 1/2" 975XL3 BFSS RP hold?

This model is ASSE® Listed 1013, CUPC® Listed, UL® Classified, C-UL® Classified, CSA® Certified CSA B64.4, and AWWA compliant C511. It is also approved by the Foundation for Cross Connection Control and Hydraulic Research at USC and NYC MEA 425-89-M VOL 3.

What are the maximum operating pressure and temperature ratings for this device?

The Zurn Wilkins 975XL backflow preventer has a maximum working water pressure of 175 PSI and a maximum working water temperature of 180°F. The hydrostatic test pressure is 350 PSI.

How does the design of the 975XL facilitate maintenance?

The 975XL features EZSwap® stacked checks with top access and twist-lock connections, allowing for quick and easy repairs and replacements. Both the first and second checks are accessible for maintenance without requiring the removal of the relief valve or the entire device from the line.