4 375 RPDA, GRV BODY, GRV X GRV, LESS GATE VALVES

Item Number: 4-375ADAL
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$9,824.76
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Product Type: Reduced Pressure Detector Assembly (RPDA)
  • Size: 4 inch
  • End Connections: Grooved for steel pipe
  • Body Material: NSF Approved Fusion Epoxy Coated Ductile Iron
  • Maximum Working Pressure: 175 PSI
  • Maximum Working Temperature: 140°F
  • Certification: ASSE® Listed 1047
  • Feature: Metered by-pass detects leaks and unauthorized water use

Description

The 4 inch Zurn Wilkins 375ADA Reduced Pressure Detector Assembly (RPDA) is engineered for fire protection systems, providing high hazard protection against backsiphonage and back-pressure. This model features durable epoxy coated ductile iron construction and grooved end connections, designed for direct installation onto steel pipe systems. It includes a metered by-pass to identify leaks and unauthorized water usage. With a maximum working pressure of 175 PSI, this RPDA is ASSE® Listed 1047 and CSA B64.4 certified, ensuring reliable performance in critical applications. Item number 4-375ADAL.

Help Me Connect

Connecting the Zurn Wilkins 375ADA RPDA

  • This 4 inch Model 375ADA features grooved end connections, specifically designed for direct installation onto steel pipe systems.
  • The grooved ends allow for secure and leak-tight connections using appropriate grooved couplings, which are widely used for efficiency and flexibility in fire protection system installations.
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Additional Details

The Zurn Wilkins 375ADA Reduced Pressure Detector Assembly is a backflow preventer designed for installation on water lines in fire protection systems. It provides high hazard protection against backsiphonage and back-pressure of contaminated water into the potable water supply, and incorporates a metered by-pass to detect leaks and unauthorized water use. This specific model features grooved connections and is supplied without gate valves.

Application

  • Designed for installation on water lines in fire protection systems
  • Protects against backsiphonage and back-pressure of contaminated water into the potable water supply
  • Incorporates a metered by-pass to detect leaks and unauthorized water use
  • Provides high hazard protection

Materials

  • Main valve body: Ductile Iron ASTM A536 with NSF Approved fusion epoxy finish
  • Access covers: Ductile Iron ASTM A536 with NSF Approved fusion epoxy finish
  • Internals: Stainless steel, 300 Series, NORYL™
  • Fasteners & Springs: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Polymers: NORYL™
  • Sensing line: Stainless steel, braided hose

Features

  • Reduced Pressure Detector Assembly (RPDA) design
  • Metered by-pass to detect leaks and unauthorized water use
  • Checks and relief valve are accessible for maintenance without removing the device from the line
  • Grooved end connections for steel pipe
  • Supplied without shut-off valves

Specifications

  • Product Type: Reduced Pressure Detector Assembly (RPDA)
  • Model: 375ADA
  • Size: 4 inch
  • End Connections: Grooved for steel pipe
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Coating: NSF Approved Fusion Epoxy Finish
  • Internals Material: Stainless Steel, 300 Series, NORYL™
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI
  • Shut-off Valves: Not Included

End Connection Standards

  • Grooved for Steel Pipe: AWWA C606
  • Flanged Bolt Pattern: ASME B16.42 Class 150

Certificates & Approvals

  • ASSE® Listed 1047 (2 1/2" - 8")
  • CSA® Certified CSA B64.4 (2-1/2" - 8")
  • AWWA Compliant C550
  • UL® Classified
  • C-UL® Classified
  • FM® Approved
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • NYC MEA 104-05-M
  • Meets NSF/ANSI/CAN 61* (*0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

FAQs

What is the primary function of the Zurn Wilkins 375ADA Reduced Pressure Detector Assembly?

Its primary function is to protect potable water supplies in fire protection systems from contamination due to backsiphonage and back-pressure. It provides high hazard protection.

What type of connections does this 4-inch 375ADA model have?

This 4-inch model features grooved end connections, specifically designed for installation with steel piping systems using grooved couplings.

What material is the main valve body of the 375ADA made from?

The main valve body is constructed from durable Ductile Iron ASTM A536, coated with an NSF Approved fusion epoxy finish for enhanced protection.

Does the 375ADA assembly help detect water leaks?

Yes, this model incorporates a metered by-pass specifically designed to detect leaks and instances of unauthorized water use within the system.

What is the maximum working water pressure for this device?

The Zurn Wilkins 375ADA Reduced Pressure Detector Assembly has a maximum working water pressure rating of 175 PSI.

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