8 475 RP DI BODY N PATTERN VERT BFLY, LESS GATE VALVES

Item Number: 8-475VL
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$32,878.14
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 8 inch
  • Body Material: Ductile Iron ASTM A536 Grade 4
  • Pattern: N-Pattern (Vertical Up/Down Flow)
  • Maximum Working Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Lead-Free Construction
  • ASSE® Listed 1013 for high hazard protection
  • Single access cover for easy maintenance

Description

The Zurn Wilkins Model 475 Reduced Pressure Principle Backflow Preventer is an 8-inch N-Pattern device designed for high hazard, potable water applications. This lead-free unit protects against both backsiphonage and backpressure in vertical up and down flow installations. Featuring a durable ductile iron body and a patented center-stem guided compound check, it ensures reliable performance and low headloss. The compact design with a single access cover simplifies maintenance and makes it ideal for new or retrofit projects where space is limited. It is ASSE® Listed 1013 and CSA B64.4 Certified.

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Installation & Connections

  • This backflow preventer is designed for vertical flow up and vertical flow down installations on potable water lines.
  • The N-Pattern configuration allows for flexible placement in various setups, including compact spaces.
  • It can be connected using Grooved (for steel pipe) or Flanged end connections, conforming to AWWA C606-87 and ANSI B16.42 Class 150 standards respectively.
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Additional Details

The 8-inch Zurn Wilkins Model 475 Reduced Pressure Principle Backflow Preventer is designed for high hazard, potable water applications to protect against both backsiphonage and backpressure.

This N-Pattern backflow preventer is suitable for vertical flow up and vertical flow down installations, offering a compact solution for new or retrofit projects.

Features

  • Provides protection against backsiphonage and backpressure for potable water lines.
  • N-Pattern design allows for installation in vertical flow up and vertical flow down configurations.
  • Features a single access cover for reduced maintenance downtime and lower repair costs.
  • Equipped with a patented, center-stem guided Compound Check for low headloss, superior reliability, and unmatched performance.
  • Suitable for high hazard applications.
  • Meets the requirements of the Federal Lead Law (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT).

Specifications

General

  • Model: 475
  • Product Type: Reduced Pressure Principle Backflow Preventer
  • Nominal Size: 8 inch
  • Pattern: N-Pattern (Vertical Up/Down Flow)
  • Installation Orientation: Vertical Up/Down
  • Valve Type: Less Gate Valves

Materials

  • Main Valve Body: Ductile Iron ASTM A536 Grade 4
  • Access Covers: Ductile Iron ASTM A536 Grade 4
  • Coatings: FDA Approved fusion epoxy finish
  • Internals: Stainless Steel, 300 Series, NORYL™
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Springs: Stainless Steel, 300 Series

Performance

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

Connections

  • End Connections: Grooved (for steel pipe) AWWA C606-87, Flanged ANSI B16.42 Class 150

Certificates & Approvals

  • ASSE® Listed 1013
  • CSA B64.4 Certified (4" thru 8")
  • cUPC® Listed
  • UL® Classified
  • FM® Approved
  • NYC MEA 368-99-M VOL 4
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Meets the requirements of the Federal Lead Law (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
  • AWWA Compliant C511 (applies to models with gate valves)

FAQs

What is the primary function of the Zurn Wilkins Model 475 backflow preventer?

The primary function is to protect potable water lines from contamination due to both backsiphonage and backpressure in high hazard applications.

What does "N-Pattern" mean for installation?

The N-Pattern design allows the backflow preventer to be installed in both vertical flow up and vertical flow down configurations, offering flexibility for various site conditions and compact spaces.

What are the main materials used in the construction of this device?

The main valve body and access covers are made of ductile iron ASTM A536 Grade 4. Internals are stainless steel and NORYL™, while elastomers are EPDM and Buna Nitrile.

What is the maximum operating pressure and temperature this model can handle?

This model is designed for a maximum working pressure of 175 PSI and a maximum working water temperature of 140°F.

Is this backflow preventer certified by any industry standards?

Yes, it is ASSE® Listed 1013, CSA B64.4 Certified, cUPC® Listed, UL® Classified, and FM® Approved, among other approvals.

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