6 475 RP SS BODY N PATTERN VERT OSY FLG X FLG

Item Number: 6-475STVOSY
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$24,071.04
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Model: 475STV
  • Size: 6 inch
  • Body Material: 304L Stainless Steel
  • Flow Pattern: n-Pattern, Vertical Up/Up Flow
  • Shut-off Valves: OS&Y Flanged Gate
  • Maximum Working Pressure: 175 psi
  • Certifications: ASSE 1013, NSF/ANSI/CAN 61, CSA B64.4, UL Classified, FM Approved
  • Connection Type: Flanged (ASME B16.42, Class 150)

Description

The Zurn Wilkins Model 475STV is a 6-inch Reduced Pressure Principle Assembly with an n-pattern 304L stainless steel body and OS&Y flanged gate shut-off valves. It is designed for vertical up and vertical up flow installations on potable water lines to prevent backsiphonage and backpressure contamination. This lead-free unit offers superior corrosion resistance, easy maintenance access, and ultra-low pressure drop from its patented compound checks. It is ASSE 1013, NSF/ANSI/CAN 61, CSA B64.4, UL, and FM approved, making it ideal for health hazard applications requiring reliable protection.

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Connections

This Wilkins 475STV backflow preventer features flanged end connections, suitable for direct installation into piping systems using matching flanges. The OS&Y gate valves provide clear visual indication of whether the valve is open or closed, facilitating proper system operation and maintenance. It is designed for applications requiring vertical up and vertical up flow through the assembly.

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Additional Details

The Zurn Wilkins Model 475STV 6 inch Reduced Pressure Principle Assembly (RPV) features an n-pattern stainless steel body and OS&Y flanged shut-off valves. It is designed for new installations or as a direct drop-in replacement on potable water lines to protect against backsiphonage and backpressure of contaminated water, specifically in applications requiring vertical up and vertical up flow.

Its stainless steel construction resists corrosive effects of water, ensuring extended product life and reliable performance. The design allows for all checks and the relief valve to be accessible for maintenance without removing the device from the line.

Construction & Materials

  • Main Valve Body: 304L Stainless steel for superior corrosion resistance
  • Access Covers: 304L Stainless steel
  • Internals: Stainless steel, 300 Series, and NORYLT™, NSF Listed for durability
  • Fasteners & Springs: Stainless Steel, 300 Series
  • Seal Rings: EPDM (FDA approved)
  • O-Rings: Buna Nitrile (FDA approved)
  • Seat Ring and Check Valve: NORYLT™
  • Stem: Stainless steel (ASTM A 276)
  • Seat Disc Elastomers: EPDM
  • Sensing Line: Stainless Steel, braided hose
  • Coatings: FDA Approved electrostatic epoxy finish

Features

  • Designed for vertical up and vertical up flow applications
  • Ideal for new installations or direct drop-in replacement
  • Stainless steel body resists corrosion and extends product life
  • Smaller footprint compared to some older models
  • Time-tested check and relief valve components ensure easy maintenance and system uptime
  • Patented compound checks provide ultra-low pressure drop
  • All internal components are accessible for maintenance without removing the device from the line

Specifications

General

  • Model: 475STV
  • Size: 6 inch
  • Configuration: n-Pattern, Vertical Flow (VUVU)
  • Shut-off Valves: OS&Y Gate Valves

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

Connections

  • End Connection Type: Flanged
  • End Connection Standard: ASME B16.42, Class 150

Materials

  • Main Valve Body: 304L Stainless Steel
  • Access Covers: 304L Stainless Steel
  • Internals: Stainless Steel, 300 Series, NORYLT™
  • Fasteners & Springs: Stainless Steel, 300 Series
  • Seal Rings: EPDM (FDA approved)
  • O-Rings: Buna Nitrile (FDA approved)
  • Sensing Line: Stainless Steel, braided hose
  • Seat Ring: NORYLT™
  • Check Valve: NORYLT™
  • Stem: Stainless Steel (ASTM A 276)
  • Seat Disc Elastomers: EPDM
  • Coating: FDA Approved electrostatic epoxy finish

Dimensions & Weights (approximate)

  • Length A (with OS&Y Gate Valves): 27 7/8 inches (708 mm)
  • Length A (with Butterfly Valves, for reference): 36 1/4 inches (922 mm)
  • Weight (with OS&Y Gates, GXF): 331 lbs (150 kg)

Certificates & Approvals

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

FAQs

What type of flow configuration does the 475STV backflow preventer support?

The Wilkins 475STV model is specifically designed for applications requiring vertical up and vertical up (VUVU) flow orientation, making it suitable for systems where inlet and outlet flows are upwards.

What are the end connections for this 6-inch 475STV backflow preventer?

This 6-inch 475STV model features flanged end connections, compliant with ASME B16.42 Class 150, for secure and robust integration into piping systems.

What materials are used in the construction of the Zurn Wilkins 475STV body and internal components?

The main valve body and access covers are constructed from 304L Stainless Steel for superior corrosion resistance. Internal components include Stainless Steel, 300 Series, NORYLT™ for the seat ring and check valve, EPDM for seal rings, and Buna Nitrile for O-rings.

What is the maximum operating pressure for the 6-inch Zurn Wilkins 475STV?

The maximum working water pressure for this 6-inch Zurn Wilkins 475STV Reduced Pressure Principle Assembly is 175 psi.

What certifications does the Wilkins 475STV hold?

The Wilkins 475STV is Lead Free and certified to NSF/ANSI/CAN 61, ASSE® Listed 1013, AWWA C511 (with gates only) and C550, CSA B64.4, UL® Classified, C-UL® Classified, and FM® Approved.

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