8 375 RPDA, FLG BODY, FLG X FLG, LESS GATE VALVES

Item Number: 8-375DAL
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$27,088.73
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Reduced Pressure Principle Detector Backflow Assembly
  • Size: 8 inch
  • End Connection Type: Flanged
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Main Valve Body: Epoxy-coated Ductile Iron ASTM A536
  • Internals: Stainless Steel, 300 Series; NORYL™
  • Certifications: ASSE® Listed 1047, UL® Classified, NSF/ANSI/CAN 61
  • Features: Metered bypass for leak detection

Description

The Zurn Wilkins Model 375DA Reduced Pressure Principle Detector Backflow Assembly is an 8-inch device designed to protect potable water supplies in fire protection systems from backsiphonage and backpressure of contaminated water. Its epoxy-coated ductile iron body and stainless steel internals ensure corrosion resistance and durability. Featuring a metered bypass for leak detection and unauthorized water use, this assembly helps reduce lifecycle costs. It is ASSE® Listed 1047, UL® Classified, and meets NSF/ANSI/CAN 61 for lead-free compliance, making it suitable for high hazard applications. Item number 8-375DAL.

Help Me Connect

This 8 inch Zurn Wilkins 375DA backflow preventer features flanged end connections. It is designed to connect to pipes using a flanged bolt pattern, adhering to ASME B16.42 Class 150 standards. Ensure your existing piping system or new installation is compatible with 8 inch flanged connections.

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Additional Details

The Zurn Wilkins Model 375DA Reduced Pressure Principle Detector Backflow Assembly is designed for installation on water lines in fire protection systems to protect against both backsiphonage and backpressure of contaminated water into the potable water supply, particularly in high hazard applications.

This assembly features a metered bypass to effectively detect leaks and prevent unauthorized water use, contributing to lower lifecycle costs.

Construction & Materials

  • Main valve body and access covers are constructed from epoxy-coated ductile iron (ASTM A536) for corrosion resistance.
  • Internals, fasteners, and springs are made from 300 Series stainless steel for durability.
  • Elastomers include EPDM (FDA approved) and Buna Nitrile (FDA approved), with polymers made of NORYL™.
  • The Zurn Wilkins Compound Check provides low headloss and superior performance.
  • Designed with a short lay-length for easier installation and backflow replacement.

Maintenance

  • Relief valve and check valves are easily accessible for in-line maintenance without removing the device from the line.

Specifications

General

  • Product Type: Reduced Pressure Principle Detector Backflow Assembly
  • Model: 375DA
  • Nominal Size: 8 inch
  • Application: Fire Protection Systems
  • Metered Bypass: Yes

Performance

  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI

Materials

  • Main Valve Body: Ductile Iron ASTM A536
  • Access Covers: Ductile Iron ASTM A536
  • Coating: NSF Approved Fusion Epoxy Finish
  • Internals: Stainless Steel, 300 Series; NORYL™
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA Approved); Buna Nitrile (FDA Approved)
  • Polymers: NORYL™
  • Springs: Stainless Steel, 300 Series
  • Sensing Line: Stainless Steel, Braided Hose

Connections

  • End Connection Type: Flanged Bolt Pattern
  • Flange Standard: ASME B16.42 Class 150

Certificates & Approvals

  • ASSE® Listed: 1047
  • UL® Classified: Yes
  • AWWA Compliant: C550
  • CSA B64.4: Yes (Certified for 4" & 6" models)
  • C-UL® Classified: Yes
  • FM® Approved: Yes
  • NYC MEA: 218-01-M VOL 3
  • NSF/ANSI/CAN 61 Compliant: Yes (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
  • Approved By: Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Lead Free: Yes

FAQs

What is the primary application of the Zurn Wilkins 375DA backflow assembly?

The Zurn Wilkins 375DA is designed for installation on water lines in fire protection systems. Its primary purpose is to protect the potable water supply from contamination due to backsiphonage and backpressure in high hazard applications.

How does the metered bypass feature benefit this backflow preventer?

The metered bypass effectively detects small leaks and unauthorized water usage within the fire protection system. This feature helps to identify and address issues promptly, potentially reducing water waste and overall operating costs.

What materials are used in the construction of the Zurn Wilkins 375DA?

The main valve body and access covers are made of epoxy-coated ductile iron (ASTM A536) for corrosion resistance. Internals, fasteners, and springs are stainless steel (300 Series), while elastomers are EPDM (FDA approved) and Buna Nitrile (FDA approved).

What are the connection types for the 8-inch Zurn Wilkins 375DA model?

This 8-inch Zurn Wilkins 375DA model features flanged end connections. These connections are designed to connect to piping systems using a flanged bolt pattern, adhering to ASME B16.42 Class 150 standards.

What are the key certifications and approvals for this device?

The Zurn Wilkins 375DA is ASSE® Listed 1047, UL® Classified, AWWA Compliant C550, FM® Approved, and meets NSF/ANSI/CAN 61 for lead-free compliance. It is also approved by the Foundation for Cross Connection Control and Hydraulic Research at USC.

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