8 475 RP DI BODY N PATTERN VERT BFLY GRV X GRV

Item Number: 8-475VBG
1 1
$46,297.99
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 8 inch
  • Max Working Water Pressure: 175 PSI
  • Lead-Free: Meets NSF/ANSI/CAN 61 requirements
  • Vertical Upward Flow Configuration
  • Grooved End Butterfly Valves with Supervisory Switches
  • Epoxy Coated Ductile Iron Body
  • Patented Center-Stem Guided Compound Check
  • ASSE® Listed 1013, CSA® Certified CSA B64.4

Description

The Zurn Wilkins Model 475V Reduced Pressure Principle Backflow Preventer is an 8-inch lead-free device designed for high hazard protection in potable water lines. It safeguards against backsiphonage and backpressure contamination, suitable for vertical upward flow installations. Featuring a compact z-Pattern design for easy retrofits, this backflow preventer incorporates a patented center-stem guided compound check for reliable performance and low headloss. Constructed with an epoxy-coated ductile iron body and stainless steel internals, it offers durability. The unit comes with grooved end butterfly valves that include integral supervisory switches. It is ASSE® Listed 1013 and CSA® Certified CSA B64.4. Item number 8-475VBG.

Help Me Connect

Connections

  • This 8-inch Zurn Wilkins Model 475V backflow preventer is designed with grooved end connections for use with steel piping systems.
  • The unit includes butterfly valves with integral supervisory switches for secure and monitored connections.

Configuration

  • This Model 475V is specifically configured for a vertical upward flow orientation. Ensure your piping layout accommodates this flow direction for proper installation and operation.
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Additional Details

The Zurn Wilkins Model 475V Reduced Pressure Principle Backflow Preventer, 8-inch, is designed for installation on potable water lines to provide high hazard protection against both backsiphonage and backpressure of contaminated water into the potable water supply. This specific model is configured for a vertical upward flow application and features grooved end butterfly valves with integral supervisory switches.

Application

  • Protects potable water lines from backsiphonage and backpressure of contaminated water where a potential health hazard exists.
  • Ideal for use where lead-free valves are required, meeting NSF/ANSI/CAN 61 requirements for low lead content.
  • Suitable for vertical upward flow installations.

Design & Features

  • Features a z-Pattern shape for a small footprint, ideal for retrofits.
  • Utilizes a patented, center-stem guided compound check for reliable and superior performance with low headloss.
  • Equipped with grooved end butterfly valves that include integral supervisory switches.
  • First and second checks are accessible for maintenance without removing the relief valve or entire device from the line.
  • Main body and access covers are constructed from epoxy coated ductile iron.
  • Stem is made of stainless steel.
  • Seat disc elastomers are EPDM.

Installation Requirements

  • Local codes and manufacturer's instructions must be followed for installation.
  • Assembly should be mounted above adequate drains with sufficient side clearance for testing and maintenance.
  • Unit must be installed so no part can be submerged.

Specifications

  • Size: 8 inch
  • Model: 475V
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI
  • Body Material: Ductile Iron ASTM A536 Grade 4
  • Access Covers Material: Ductile Iron ASTM A 536 Grade 4
  • Coatings: FDA Approved Fusion Epoxy Finish
  • Internals Material: Stainless Steel, 300 Series, NORYL™
  • Fasteners Material: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Polymers: NORYL™
  • Springs Material: Stainless Steel, 300 Series
  • End Connections: Grooved for steel pipe (AWWA C606-87)

Certificates & Approvals

  • ASSE® Listed 1013
  • AWWA Compliant C511 (with gates only) and C550
  • CSA® Certified CSA 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)

Dimensions (Approximate)

  • Length (A): 30 5/16 inches (770 mm)
  • Width with Butterfly Valves (B): 46 5/16 inches (1176 mm)
  • Height with Butterfly Valves (C): 35 3/8 inches (899 mm)
  • Relief Valve Discharge Port (D): 12 inches (305 mm)
  • Height (E) with Butterfly Valves: 34 3/8 inches (873 mm)

Weight (Approximate)

  • Weight with Butterfly Valves (GXG): 595 lbs (270 kg)
  • Relief Valve Discharge Port Area: 3.69 sq. in.

FAQs

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

The Model 475V is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water, providing high hazard protection where a potential health hazard exists.

What does the 'V' in Model 475V signify?

The 'V' in Model 475V indicates that the backflow preventer is specifically configured for vertical upward flow applications.

What type of end connections does this 8-inch Model 475V have?

This 8-inch Model 475V features grooved end connections, designed for steel pipe, and includes butterfly valves with integral supervisory switches.

Is this backflow preventer lead-free?

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

What materials are used for the main components of this backflow preventer?

The main valve body and access covers are made of epoxy-coated ductile iron (ASTM A536 Grade 4). Internal components include stainless steel, NORYL™, and EPDM elastomers for the seat discs.

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