6 475 RPDA DI BODY VERT GAL MTR, LESS GATE VALVES

Item Number: 6-475DAVL
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$18,129.39
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 6 inch
  • Application: Fire protection systems
  • Contamination Protection: Backsiphonage and backpressure
  • Body Material: Ductile Iron with FDA epoxy finish
  • Maximum Operating Pressure: 175 PSI
  • Maximum Operating Temperature: 140°F
  • Leak Detection: Metered bypass system
  • Configuration: Vertical Z-Pattern flow
  • Valves: Less shut-off valves (grooved body connections)
  • Approvals: ASSE 1047, NSF/ANSI/CAN 61, UL Classified

Description

The Zurn Model 475DAV 6 inch Reduced Pressure Detector Assembly is a critical component for fire protection systems, safeguarding potable water supplies from contamination caused by backsiphonage and backpressure. Featuring a durable ductile iron body with an FDA approved fusion epoxy finish, this unit is designed for vertical Z-Pattern flow installations. Its metered bypass system provides essential leak detection and monitors for unauthorized water usage. This specific configuration comes less shut-off valves, offering a compact solution. It is ASSE® Listed 1047 and meets NSF/ANSI/CAN 61 requirements, ensuring reliability and compliance. Item number 6-475DAVL.

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Installation Guidance

  • This Zurn Model 475DAV is designed for vertical flow up (Z-Pattern) installation.
  • It must be installed in accordance with the manufacturer's instructions and the latest edition of the Uniform Plumbing Code.
  • The assembly should be mounted above adequate drains with sufficient side clearance for testing and maintenance, ensuring no part of the unit can be submerged.
  • This model is supplied less shut-off valves and connects directly to grooved pipe connections.
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Additional Details

The Zurn Model 475DAV 6 inch Reduced Pressure Detector Assembly is engineered for installation on water lines within fire protection systems. It provides critical protection against both backsiphonage and backpressure of contaminated water from entering the potable water supply, ensuring the safety of drinking water. This specific 6-inch model features a Z-Pattern vertical up flow configuration and a metered bypass system to detect leaks and unauthorized water use, optimizing maintenance and water conservation.

Key Features

  • Designed for fire protection systems to safeguard potable water from contamination.
  • Metered bypass detects potential leaks and unauthorized water usage.
  • Vertical flow up (Z-Pattern) configuration with a small footprint ideal for retrofit applications.
  • Main valve body and access covers constructed from ductile iron ASTM A 536 Grade 4 with FDA approved fusion epoxy finish for corrosion resistance.
  • Supplied less shut-off valves (grooved body connections).
  • Maximum working water pressure of 175 PSI and maximum working water temperature of 140°F.

Specifications

  • Size: 6 inch
  • Main Valve Body Material: Ductile Iron ASTM A 536 Grade 4
  • Access Cover Material: Ductile Iron ASTM A 536 Grade 4
  • Coating: FDA Approved Fusion Epoxy Finish
  • Fastener Material: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Polymer Material: NORYL™
  • Spring Material: Stainless Steel, 300 Series
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI
  • End Connections: Grooved for steel pipe
  • Relief Valve Discharge Port (for 6" size): 2.75 sq. in.
  • Configuration: Z-Pattern Vertical Up Flow
  • Bypass: Metered

Dimensions & Weight (approximate)

  • Length (A) for less shutoff valves: 21 in (533 mm)
  • Height (B) for less shutoff valves: 42 in (1067 mm)
  • Weight (Less Shutoff Valves): 187 lbs (85 kg)

Certificates & Approvals

  • ASSE® Listed 1047 (4" thru 8")
  • AWWA Compliant C550
  • UL® Classified (4" thru 10")
  • C-UL® Classified (4" thru 10")
  • FM® Approved (4" thru 8")
  • NYC MEA 170-02-M VOL 2 (4" thru 8")
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California (4" thru 8")
  • Meets requirements of NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

FAQs

What is the primary function of the Zurn 475DAV assembly?

Its primary function is to protect potable water supplies in fire protection systems from contamination due to backsiphonage and backpressure, ensuring safe drinking water.

What does "Reduced Pressure Detector Assembly" mean?

It means the assembly contains two independently acting check valves, a hydraulically operated differential relief valve located between them, and includes a metered bypass for detecting small flows or leaks.

How does the metered bypass system work?

The metered bypass system incorporates a small water meter that detects low-flow conditions, allowing for the identification of leaks or unauthorized water usage within the system.

What type of connections does this 6-inch model use?

This specific Zurn 475DAV model is supplied less shut-off valves and is designed for direct connection to grooved steel pipes.

What are the key material specifications of this assembly?

The main valve body and access covers are made of ductile iron ASTM A 536 Grade 4 with an FDA approved fusion epoxy finish for durability and corrosion resistance.

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