3 475 RP DI BODY N PATTERN, VERTICAL, OSY FLG X FLG

Item Number: 3-475VOSY
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$10,915.13
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 3 inch
  • Valve Type: Reduced Pressure Principle Backflow Preventer
  • Flow Configuration: Vertical Flow Up (z-Pattern)
  • End Connections: Flanged with OS&Y Gate Valves
  • Maximum Working Pressure: 175 PSI
  • Lead-Free: Meets NSF/ANSI/CAN 61 requirements
  • Body Material: Ductile Iron
  • Features: Patented center-stem guided Compound Check

Description

The 3 inch Zurn Wilkins Model 475VOSY Reduced Pressure Principle Backflow Preventer provides high health hazard protection for potable water systems. It safeguards against backsiphonage and backpressure, ensuring clean water supply. Designed for vertical flow up applications with a compact z-Pattern body and OS&Y flanged gate valves, it's ideal for new or retrofit installations. Featuring a patented center-stem guided Compound Check, it offers low headloss and reliable performance. This backflow preventer meets NSF/ANSI/CAN 61 for lead-free compliance and is certified by ASSE, AWWA, CSA, UL, and FM. Item number 3-475VOSY.

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Connections & Installation

  • This 3 inch backflow preventer is specifically designed for vertical flow up applications and features a z-Pattern body for compact installations.
  • It includes OS&Y gate valves and is equipped with flanged end connections, suitable for integrating into existing or new flanged piping systems.
  • Proper installation requires mounting the assembly above adequate drains with sufficient side clearance for testing and maintenance, ensuring no part of the unit can be submerged.
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Additional Details

The 3 inch Zurn Wilkins Model 475VOSY Reduced Pressure Principle Backflow Preventer is designed for installation on potable water lines. It protects against both backsiphonage and backpressure of contaminated water into the potable water supply, ensuring safety where a potential health hazard exists.

This Model 475V is configured in a z-Pattern for vertical flow up applications, making it ideal for new or retrofit installations in compact spaces. It features a single access cover for reduced maintenance downtime and incorporates the patented, center-stem guided Compound Check for low headloss, superior reliability, and unmatched performance.

Application

  • Protects potable water lines from backsiphonage and backpressure of contaminated water.
  • Provides protection where a potential health hazard exists.
  • Ideal for use where lead-free valves are required.

Design & Installation

  • Designed for vertical flow up applications.
  • Configured in a z-Pattern with a small footprint for easy retrofits in compact spaces.
  • Equipped with OS&Y gate valves and flanged inlet gate connection with grooved outlet gate connection.
  • Single access cover simplifies maintenance.

Features

  • Patented, center-stem guided Compound Check for low headloss.
  • Offers superior reliability and unmatched performance.

Materials

  • Main Valve Body: Ductile Iron ASTM A536 Grade 4
  • Access Covers: Ductile Iron ASTM A 536 Grade 4
  • Coatings: FDA Approved fusion epoxy finish
  • Internals: Stainless steel, 300 Series and NORYL™
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved) and Buna Nitrile (FDA approved)
  • Polymers: NORYL™
  • Springs: Stainless steel, 300 series

Specifications

General

  • Size: 3 inch
  • Model: 475VOSY
  • Valve Type: Reduced Pressure Principle Backflow Preventer
  • Flow Configuration: Vertical Flow Up
  • Pattern: Z-Pattern
  • End Connections: Flanged (with OS&Y Gate Valves)
  • 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 Grade 4
  • Access Covers: Ductile Iron ASTM A 536 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)
  • Polymers: NORYL™
  • Springs: Stainless Steel, 300 Series

Certificates & Approvals

  • ASSE® Listed 1013
  • AWWA Compliant C511 (with gates only)
  • AWWA Compliant C550
  • CSA B64.4 (4" thru 8" - applies to model series)
  • CUPC® Listed
  • UL® Classified
  • C-UL® Classified
  • FM® Approved
  • NYC MEA 468-99-M VOL 4
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Meets NSF/ANSI/CAN 61 requirements (0.25% Max. Weighted Average Lead Content)

FAQs

What is the primary application of the Zurn Wilkins Model 475VOSY?

The Zurn Wilkins Model 475VOSY is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water, especially where a potential health hazard exists.

What type of flow configuration does the Model 475VOSY require?

The Model 475VOSY is specifically designed for vertical flow up applications and features a z-Pattern body configuration for compact installation.

Is this backflow preventer compliant with lead-free standards?

Yes, the Zurn Wilkins Model 475VOSY meets the requirements of NSF/ANSI/CAN 61, ensuring it contains a maximum weighted average lead content of 0.25%, making it lead-free compliant.

What are the main materials used in the construction of this backflow preventer?

The main valve body and access covers are made of Ductile Iron ASTM A536 Grade 4 with an FDA Approved fusion epoxy finish. Internals and fasteners are Stainless Steel, 300 Series, with EPDM and Buna Nitrile elastomers.

What are the key certifications and approvals for the Model 475VOSY?

This backflow preventer is ASSE® Listed 1013, AWWA Compliant C511 and C550, CSA B64.4 (for 4" thru 8" models), CUPC® Listed, UL® Classified, FM® Approved, and meets NSF/ANSI/CAN 61 requirements.

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