8 475 RP DI BODY N PATTERN, VERTICAL, OSY FLG X FLG

Item Number: 8-475VOSY
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$40,760.57
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Type: Reduced Pressure Principle Backflow Preventer
  • Size: 8 inch
  • Body Material: Ductile Iron ASTM A 536 Grade 4
  • Connection Type: OS&Y Flanged
  • Installation: Vertical Flow Up (z-Pattern)
  • Maximum Working Pressure: 175 PSI
  • Maximum Operating Temperature: 140°F
  • Lead Content: 0.25% Max. Weighted Average

Description

The Zurn 8 inch 475V Reduced Pressure Principle Backflow Preventer provides high hazard protection for potable water systems. Designed with a z-Pattern body for vertical flow up installations, this unit is ideal for preventing backsiphonage and backpressure of contaminated water. It features durable ductile iron construction with OS&Y flanged connections, a single access cover for easy maintenance, and a patented center-stem guided Compound Check for low headloss. Rated for a maximum working pressure of 175 PSI and maximum operating temperature of 140°F, it is compliant with lead-free standards. Item number 8-475VOSY.

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Connections

The 8 inch Zurn 475V Backflow Preventer is designed for installation in a vertical flow up orientation. It features OS&Y flanged end connections on both sides, which are typically used to connect to existing flanged piping systems.

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Additional Details

The 8 inch Zurn 475V Reduced Pressure Principle Backflow Preventer is designed for high health hazard, potable water applications, offering protection against both backsiphonage and backpressure of contaminated water into the potable water supply.

This backflow preventer features a z-Pattern body and is specifically for vertical flow up installations, making it ideal for compact spaces and easy retrofits. It includes OS&Y gate valves and a single access cover for reduced maintenance downtime, plus a patented center-stem guided Compound Check for low headloss and reliable performance.

Features

  • Provides high hazard protection for potable water systems.
  • Designed for vertical flow up installations in a z-Pattern.
  • Features OS&Y gate valves for secure shut-off.
  • Single access cover simplifies maintenance and reduces repair time.
  • Equipped with a patented, center-stem guided Compound Check for superior reliability and low headloss.
  • Lead-free compliant.

Specifications

General

  • Model: 475V
  • Size: 8 inch
  • Type: Reduced Pressure Principle Backflow Preventer
  • Orientation: Vertical Flow Up (z-Pattern)
  • Gate Valves: OS&Y Flanged
  • Maximum Working Pressure: 175 PSI
  • Maximum Operating Temperature: 140°F
  • Relief Valve Discharge Port: 8 inch (3.69 kg)

Materials

  • Main Valve Body: Ductile Iron ASTM A 536 Grade 4
  • Access Covers: Ductile Iron ASTM A 536 Grade 4
  • Main Valve Internals: FDA Approved Fusion epoxy finish, Stainless Steel, 300 Series
  • Elastomers: NORYL™
  • Fasteners: Stainless Steel, 300 Series
  • Springs: Stainless Steel, 300 Series
  • Seals: Buna Nitrile (FDA approved)
  • Polymers: NORYL™

Certificates & Approvals

  • AWWA Compliant B511 (with gate valves only), and C550
  • CSA B64.4 Certified (4 thru 8 inch)
  • CUL® Classified
  • cCSAus® Classified
  • FM® Approved
  • NYC MEA 388-99-M VOL 4
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Approved by the Commonwealth of Massachusetts
  • (0.25% MAX. WEIGHED AVERAGE LEAD CONTENT)

FAQs

What type of backflow prevention does the Zurn 475V provide?

The Zurn 475V is a Reduced Pressure Principle (RP) backflow preventer, offering high hazard protection against both backsiphonage and backpressure in potable water systems.

What are the installation requirements for this Zurn 475V model?

This particular Zurn 475V model is specifically designed for vertical flow up installations and features a z-Pattern body for compact and efficient setup.

What are the main materials used in the construction of the Zurn 475V?

The main valve body and access covers are made from Ductile Iron ASTM A 536 Grade 4. Internal components include FDA Approved Fusion epoxy finish and stainless steel, with NORYL™ elastomers and Buna Nitrile (FDA approved) seals.

What type of connections does the 8 inch Zurn 475V use?

This 8 inch Zurn 475V model comes with OS&Y flanged end connections on both sides, designed to connect to compatible flanged piping systems.

What are the maximum pressure and temperature ratings for this backflow preventer?

The Zurn 475V is rated for a maximum working water pressure of 175 PSI and a maximum operating temperature of 140°F.

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