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

Item Number: 8-475STVBG
1 1
$45,957.55
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • 8 inch Reduced Pressure Principle Assembly
  • Body Material: 304L Stainless Steel
  • Connection Type: Grooved End
  • Valve Type: Grooved End Butterfly with Integral Supervisory Switches
  • Orientation: Vertical Flow Up (VUVU)
  • Maximum Working Water Pressure: 175 psi
  • ASSE® Listed: 1013
  • CSA® Certified: CSA B64.4

Description

The WILKINS Model 475STV is an 8 inch stainless steel n-Pattern Reduced Pressure Principle Vertical Assembly (RPV) designed to protect potable water supplies from backsiphonage and backpressure contamination. Featuring a durable 304L stainless steel body for corrosion resistance, this unit is ideal for vertical flow-up installations and direct drop-in replacements. It includes grooved end butterfly valves with integral supervisory switches and patented compound checks for ultra-low pressure drop. The 475STV is ASSE® 1013, CSA B64.4, and NSF/ANSI/CAN 61 listed, ensuring reliable performance and compliance for critical fire safety and industrial applications.

Help Me Connect

Connecting Your 8 inch WILKINS 475STV

  • This Reduced Pressure Principle Assembly is designed with grooved end connections for direct installation into steel pipe systems.
  • The unit is specifically configured for a vertical flow up (VUVU) orientation, meaning water should enter from the bottom and exit from the top.
  • Integrated grooved end butterfly valves with supervisory switches are included for isolation and monitoring within the piping system.
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Additional Details

The WILKINS Model 475STV Stainless Steel n-Pattern Reduced Pressure Principle Vertical Assembly (RPV) is an 8 inch backflow preventer designed for vertical flow-up installations on potable water lines. It provides robust protection against both backsiphonage and backpressure of contaminated water into the drinking water supply.

This assembly is ideal for new installations or direct drop-in replacement, offering convenience without compromising safety and performance. Its superior 304L stainless steel body resists corrosion and extends product life.

Features

  • 8 inch Reduced Pressure Principle Assembly designed for n-Pattern vertical flow up (VUVU) orientation.
  • Equipped with grooved end butterfly valves featuring integral supervisory switches.
  • 304L stainless steel body and access covers provide superior corrosion resistance.
  • Patented compound checks ensure ultra-low pressure drop, reducing the need for a booster pump.
  • Time-tested check and relief valve components for easy maintenance and increased water system uptime.
  • Smaller footprint allows for convenient direct drop-in replacement.

Connections

  • Designed with grooved end connections for steel pipe installation.

Specifications

General

  • Model: WILKINS 475STV
  • Product Type: Reduced Pressure Principle Assembly (RPPA)
  • Size: 8 inch
  • Orientation: Vertical Flow Up (VUVU)

Materials

  • Main Valve Body: 304L Stainless Steel
  • Access Covers: 304L Stainless Steel, FDA Approved electrostatic epoxy finish
  • Internals: Stainless Steel, 300 Series, NORYLT™, NSF Listed
  • Fasteners & Springs: Stainless Steel, 300 Series
  • Seal Rings: EPDM (FDA approved)
  • O-Rings: Buna Nitrile (FDA approved)
  • Sensing Line: Stainless Steel, braided hose

Performance

  • Maximum Working Water Pressure: 175 psi
  • Minimum Working Water Pressure: 25 psi
  • Maximum Working Water Temperature: 140° F
  • Minimum Working Water Temperature: 33° F
  • Hydrostatic Test Pressure: 350 psi
  • End Connections: Grooved for steel pipe

Dimensions & Weight (Approximate)

  • Length (A): 40 1/4 inch (1022 mm)
  • Height (B): 33 1/8 inch (841 mm)
  • Depth (D): 8 7/8 inch (223 mm)
  • E Dimension: 29 1/8 inch (740 mm)
  • Weight (with Butterfly Valves, GXG): 382 lbs (173 kg)

Certificates & Approvals

  • Approved by: Foundation for Cross Connection Control and Hydraulic Research (VUVD and VUVU orientations)
  • ASSE® Listed: 1013
  • AWWA Compliant: C511 (with gates only), C550
  • CSA® Certified: CSA B64.4
  • UL® Classified
  • C-UL® Classified
  • FM® Approved
  • Meets: NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
  • AWWA: C606-87
  • ASME: B16.42 Class 150

FAQs

What type of backflow protection does the WILKINS 475STV provide?

The WILKINS 475STV is a Reduced Pressure Principle Assembly (RPPA) designed to protect potable water supplies from both backsiphonage and backpressure of contaminated water.

What is the maximum working pressure for this 8 inch backflow preventer?

The maximum working water pressure for the 8 inch WILKINS 475STV is 175 psi.

What are the end connections on this 475STV model?

This specific 8 inch 475STV model features grooved end connections, designed for compatibility with steel pipe systems.

Can the WILKINS 475STV be installed horizontally?

No, the WILKINS 475STV model is specifically designed and approved for vertical flow up (VUVU) installations only.

What material is the main body of the WILKINS 475STV made from?

The main valve body and access covers of the WILKINS 475STV are constructed from 304L stainless steel, offering superior corrosion resistance.