6 475 RPDA DI BODY N-PATTERN, GRV X GRV, LESS GATE VALVES

Item Number: 6-475DAL
1 1
$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
  • Pattern: N-Pattern
  • End Connections: Grooved
  • Maximum Operating Pressure: 175 PSI
  • Maximum Working Temperature: 140°F
  • Body Material: Ductile Iron ASTM A 536 Grade 4
  • Certifications: ASSE® 1047, NSF/ANSI/CAN 61, UL® Classified, FM® Approved
  • Metered Bypass System included

Description

The Zurn Model 475DA 6 inch Reduced Pressure Detector Assembly provides critical backflow protection for fire protection systems. This N-pattern assembly is designed to prevent backsiphonage and backpressure of contaminated water into potable water supplies. Featuring a durable epoxy-coated ductile iron body and grooved end connections, it is built for longevity and compact installations. A metered bypass system helps detect leaks and unauthorized water use, reducing maintenance costs. Certified to ASSE 1047, NSF/ANSI/CAN 61, UL, and FM standards, this 6-inch RPDA ensures reliable and code-compliant performance for high-hazard applications.

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Connections and Installation

  • The Zurn Model 475DA Reduced Pressure Detector Assembly is designed for installation with 6 inch grooved steel piping.
  • Installation must comply with local codes, the manufacturer's instructions, and the latest edition of the Uniform Plumbing Code.
  • The assembly requires sufficient side clearance for testing and maintenance.
  • It should be installed above adequate drains, ensuring no part of the unit can be submerged.
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Additional Details

The Zurn Model 475DA Reduced Pressure Detector Assembly (RPDA) is designed for installation on water lines in fire protection systems.

It provides critical protection against both backsiphonage and backpressure of contaminated water into the potable water supply, ensuring public health safety.

This N-pattern assembly is supplied with grooved end connections and does not include shut-off valves, making it suitable for specific retrofit applications and compact spaces.

Key Features

  • N-Pattern Design: Optimized for new or retrofit installations in compact spaces.
  • Metered Bypass System: Detects leaks and unauthorized water use, helping to save on repair and maintenance costs.
  • Robust Construction: Main valve body and access covers are made from Ductile Iron ASTM A 536 Grade 4 with an FDA Approved fusion epoxy finish.
  • Accessible Checks: First and second checks are accessible for maintenance without removing the relief valve or the entire device from the line.

Local codes shall govern installation requirements. The assembly must be installed in accordance with the manufacturer's instructions and the latest edition of the Uniform Plumbing Code. Ensure no part of the unit is submerged.

Specifications

  • Size: 6 inch
  • Pattern: N-Pattern

Performance

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

Connections

  • End Connections: Grooved for steel pipe
  • Connection Standard: AWWA C606

Materials

  • Main Valve Body: Ductile Iron ASTM A 536 Grade 4
  • Access Covers: Ductile Iron ASTM A 536 Grade 4
  • Coatings: FDA Approved fusion epoxy finish
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Polymers: NORYL™
  • Springs: Stainless Steel, 300 Series
  • Seat Disc Elastomers: EPDM
  • Stem Material: Stainless Steel (ASTM A 276)

Relief Valve

  • Discharge Port Size (for 6"): 2.75 sq. in.

Dimensions & Weight (6" 475DA, Less Shutoff Valves)

  • Weight: 187 lbs (85 kg)
  • Dimension A: 18 11/16 in (475 mm)
  • Dimension B (Less Gate Valves): 25 in (635 mm)
  • Dimension D: 10 in (254 mm)

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 the requirements of: NSF/ANSI/CAN 61*

FAQs

What is the primary function of the Zurn 475DA Reduced Pressure Detector Assembly?

Its primary function is to protect potable water supplies from contamination caused by backsiphonage and backpressure from fire protection systems.

What type of end connections does this 6-inch 475DA model have?

This specific Zurn 475DA model features 6 inch grooved end connections, designed for compatibility with grooved steel piping.

Is a metered bypass system included with this assembly?

Yes, the Zurn 475DA includes a metered bypass system, which helps in detecting leaks and any unauthorized water usage.

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

The maximum working water pressure for the 6-inch 475DA is 175 PSI, and the maximum working water temperature is 140°F.

What materials are used for the main valve body and access covers?

The main valve body and access covers are constructed from Ductile Iron ASTM A 536 Grade 4, coated with an FDA Approved fusion epoxy finish for durability and corrosion resistance.

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