6 475 RP DI BODY N PATTERN, VERTICAL, OSY FLG X FLG

Item Number: 6-475VOSY
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$21,604.54
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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
  • Backflow Preventer Type: Reduced Pressure Principle
  • Flow Pattern: Z-Pattern, Vertical Upward Flow
  • Shut-off Valves: OS&Y Gate Valves
  • End Connections: Flanged
  • Body Material: Ductile Iron
  • Maximum Working Pressure: 175 PSI
  • Lead-Free Compliant: Yes (NSF/ANSI/CAN 61)

Description

The 6 inch Zurn 475V Reduced Pressure Principle Backflow Preventer offers high hazard protection for potable water systems. Designed for vertical flow up applications, its z-pattern body and OS&Y flanged gate valves provide a compact footprint ideal for retrofits. Constructed from durable ductile iron with an FDA-approved fusion epoxy finish, it features a patented center-stem guided compound check for low headloss and reliable performance. This lead-free compliant device (NSF/ANSI/CAN 61) ensures superior protection against backsiphonage and backpressure of contaminated water, minimizing maintenance with a single access cover. Item number 6-475VOSY.

Help Me Connect

Connecting the Zurn 475V Backflow Preventer

  • This 6 inch Zurn Model 475V is equipped with flanged end connections, designed for secure and reliable installation into a piping system.
  • The flanged connections conform to ANSI B16.42 Class 150 standards, ensuring compatibility with corresponding flanged pipe components.
  • It features OS&Y (Outside Stem and Yoke) gate valves at both the inlet and outlet, which are typically operated by turning a handwheel to control water flow. These gate valves are essential for isolating the device for maintenance or testing.
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Additional Details

The 6 inch Zurn Model 475V Reduced Pressure Principle Backflow Preventer is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable supply. This backflow regulator is shaped in the z-Pattern and is installed in a vertical flow up orientation.

Application & Features

  • Provides high hazard protection for potable water applications.
  • Ideal for use where lead-free valves are required.
  • Utilizes a patented, center-stem guided Compound Check for reliable and superior performance with low headloss.
  • Features OS&Y gate valves and flanged end connections.
  • Compact footprint makes it ideal for new installations or retrofits in tight spaces.
  • Designed with a single access cover to reduce maintenance downtime and repair costs.

Construction Materials

  • Main valve body and access covers constructed from Ductile Iron ASTM A536 Grade 4.
  • Internal components include Stainless Steel, 300 Series and NORYL™.
  • Coated with FDA Approved fusion epoxy finish.
  • Elastomers are EPDM (FDA approved) and Buna Nitrile (FDA approved).

Specifications

  • Size: 6 inch
  • Model: 475V
  • Backflow Preventer Type: Reduced Pressure Principle
  • Body Pattern: Z-Pattern (Vertical Upward Flow)
  • End Connections: Flanged
  • Shut-off Valves: OS&Y Gate Valves
  • Main Valve Body Material: Ductile Iron ASTM A536 Grade 4
  • Access Cover Material: Ductile Iron ASTM A 536 Grade 4
  • Coating: FDA Approved Fusion Epoxy Finish
  • Internals Material: Stainless Steel, 300 Series, NORYL™
  • Fasteners Material: Stainless Steel, 300 Series
  • Elastomers Material: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Polymers Material: NORYL™
  • Springs 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): AWWA C606-87
  • End Connections (Flanged): ANSI B16.42 Class 150

Certificates & Approvals

  • ASSE® Listed 1013
  • AWWA Compliant C511 (with gates only), and C550
  • CSA® Certified B64.4 (4" thru 8")
  • 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 the requirements of NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

FAQs

What is the primary application for the Zurn 475V backflow preventer?

The Zurn 475V is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable supply, especially in high health hazard applications.

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

This 6-inch Zurn 475V model is equipped with flanged end connections on both the inlet and outlet, featuring OS&Y gate valves for isolation.

Is the Zurn 475V compliant with lead-free regulations?

Yes, the Zurn 475V meets the requirements of NSF/ANSI/CAN 61, ensuring it is lead-free compliant with a maximum weighted average lead content of 0.25%.

What is the maximum working water pressure and temperature for this device?

The maximum working water pressure for the Zurn 475V is 175 PSI, and the maximum working water temperature is 140°F.

What are the key materials used in the construction of the 475V backflow preventer?

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

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