8 475 RP SS BODY N PATTERN VERT OSY FLG X FLG

Item Number: 8-475STVOSY
1 1
$45,413.09
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Model: 475STV
  • Size: 8 inch
  • Main Body Material: 304L Stainless Steel
  • End Connections: Flanged
  • Shut-off Valves: OS&Y Gate Valves
  • Flow Orientation: Vertical Flow Up (VUVU)
  • Maximum Working Pressure: 175 psi
  • ASSE® Listed 1013

Description

The Wilkins Model 475STV is an 8-inch stainless steel Reduced Pressure Principle Assembly designed for vertical flow up installations on potable water lines. This backflow preventer protects against both backsiphonage and backpressure of contaminated water, making it ideal for health hazard applications. Constructed with a 304L stainless steel body and OS&Y gate valves, it offers superior corrosion resistance and a compact footprint for easy replacement. Key features include ultra-low pressure drop compound checks, FDA-approved coatings, and certifications from ASSE, AWWA, CSA, UL, C-UL, FM, and NSF/ANSI/CAN 61. Item number 8-475STVOSY.

Help Me Connect

Connections

  • This 8-inch Wilkins 475STV backflow preventer features flanged end connections, designed to connect to compatible flanged piping systems.
  • The installation must allow for vertical flow up (VUVU) orientation, with adequate side clearance for testing and maintenance, and positioned above drains to prevent submergence, as per manufacturer's instructions and plumbing codes.
  • It is equipped with OS&Y gate valves for shut-off, which should be integrated into your system's control points.
View full details

Additional Details

The Wilkins Model 475STV Reduced Pressure Principle Assembly is an 8-inch vertical flow up backflow preventer designed for drop-in replacement or new installation on potable water lines. It protects against backsiphonage and backpressure of contaminated water, ideal for applications where a potential health hazard exists and vertical flow up installation is required.

Application & Features

  • Provides protection against backsiphonage and backpressure of contaminated water into the potable water supply.
  • Approved for applications requiring vertical flow up (VUVU) orientation.
  • Features a superior stainless steel body to resist corrosion and extend product life.
  • Smaller footprint allows for direct drop-in replacement, offering installation convenience.
  • Time-tested check and relief valve components ensure easy maintenance and increased water system uptime.
  • Patented compound checks provide ultra-low pressure drop, potentially reducing the need for a booster pump.
  • Supplied with OS&Y gate valves for shut-off.

Materials

  • Main Valve Body: 304L Stainless steel
  • Access Covers: 304L Stainless steel
  • Coatings: 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

Specifications

General

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

Performance Ratings

  • 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

Connections

  • End Connections: Flanged
  • Flange Standard: ASME B16.42 Class 150

Body & Components

  • Main Valve Body Material: 304L Stainless Steel
  • Access Cover Material: 304L Stainless Steel
  • Coating: FDA Approved Electrostatic Epoxy Finish
  • Internal Materials: Stainless Steel, 300 Series, NORYLT™ (NSF Listed)
  • Fasteners & Springs: Stainless Steel, 300 Series
  • Seal Ring Material: EPDM (FDA approved)
  • O-Ring Material: Buna Nitrile (FDA approved)
  • Sensing Line Material: Stainless Steel, braided hose
  • Shut-off Valves: OS&Y Gate Valves

Certificates & Approvals

  • ASSE® Listed 1013
  • AWWA Compliant C511 (with gates only)
  • AWWA Compliant C550
  • CSA B64.4 Certified
  • UL® Classified
  • C-UL® Classified
  • FM® Approved
  • Meets NSF/ANSI/CAN 61* (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
  • Approved by Foundation for Cross Connection Control and Hydraulic Research at USC (VUVD and VUVU orientations)
  • Lead-Free Compliant

FAQs

What is the primary application of the Wilkins 475STV Reduced Pressure Principle Assembly?

This assembly is designed for new installations or drop-in replacements on potable water lines to protect against backsiphonage and backpressure of contaminated water, especially where a potential health hazard exists and a vertical flow up orientation is required.

What type of end connections does this 8-inch model have?

This specific 8-inch Wilkins 475STV model features flanged end connections, compliant with ASME B16.42 Class 150 standards.

What materials are used for the main valve body and internal components?

The main valve body and access covers are made from 304L Stainless Steel for corrosion resistance. Internal components include Stainless steel, 300 Series, NORYLT™ (NSF Listed), EPDM (FDA approved) seal rings, and Buna Nitrile (FDA approved) O-rings.

What is the maximum operating pressure and temperature for this backflow preventer?

The Wilkins 475STV has a maximum working water pressure of 175 psi and can operate with a maximum water temperature of 140° F.

Is the Wilkins 475STV suitable for vertical installations?

Yes, the Model 475STV is specifically approved for applications requiring vertical flow up (VUVU) orientation, making it ideal for installations where the inlet and outlet flows are vertical and upwards.

Related Products