4 475 RP DI BODY N PATTERN VERT BFLY GRV X GRV

Item Number: 4-475VBG
1 1
$15,428.19
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Product Type: Reduced Pressure Principle Backflow Preventer
  • Model: 475VBG
  • Nominal Size: 4 inch
  • Flow Configuration: Vertical Flow Up
  • Valve Type: Grooved End Butterfly Valves
  • Body Material: Ductile Iron ASTM A536 Grade 4
  • Maximum Working Pressure: 175 PSI
  • Lead-Free: Yes, NSF/ANSI/CAN 61 Compliant

Description

The Zurn Wilkins Model 475VBG is a 4 inch Reduced Pressure Principle Backflow Preventer engineered for vertical flow up applications on potable water lines. It provides high health hazard protection against backsiphonage and backpressure of contaminated water into the potable supply. Featuring grooved end butterfly valves with integral supervisory switches and a compact Z-pattern ductile iron body, this lead-free backflow preventer is ideal for retrofit installations. It offers reliable performance, low headloss, and simplified maintenance, meeting ASSE 1013, CSA B64.4, and NSF/ANSI/CAN 61 standards. Item number 4-475VBG.

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Connections

  • The Zurn Wilkins Model 475VBG features grooved end connections, specifically designed for use with steel pipe.
  • It is equipped with grooved end butterfly valves that include integral supervisory switches, providing secure and monitored shut-off capabilities.
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Additional Details

The 4 inch Zurn Wilkins Model 475VBG Reduced Pressure Principle Backflow Preventer is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable supply. This backflow regulator provides high health hazard protection for applications requiring vertical flow up.

The Z-pattern configuration and grooved end butterfly valves with integral supervisory switches make it ideal for new or retrofit installations in compact spaces.

Features

  • Provides high health hazard protection in potable water applications
  • Vertical flow up configuration with a compact Z-pattern design
  • Equipped with grooved end butterfly valves with integral supervisory switches
  • Lead-free construction meeting NSF/ANSI/CAN 61 requirements
  • Patented, center-stem guided Compound Check for low headloss and reliable performance
  • Single access cover for reduced maintenance downtime and repair costs

Construction & Materials

  • Main Valve Body: Ductile Iron ASTM A536 Grade 4
  • Access Covers: Ductile Iron ASTM A536 Grade 4
  • Coatings: FDA Approved fusion epoxy finish
  • Internals: Stainless Steel, 300 Series (Stem); NORYL™ (Seat ring, check valve, polymers)
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)

Specifications

  • Product Type: Reduced Pressure Principle Backflow Preventer
  • Model: 475VBG
  • Nominal Size: 4 inch
  • Flow Configuration: Vertical Flow Up
  • Valve Type: Grooved End Butterfly Valves with Integral Supervisory Switches
  • End Connections: Grooved for steel pipe
  • Main Body Material: Ductile Iron ASTM A536 Grade 4
  • Access Cover Material: Ductile Iron ASTM A536 Grade 4
  • Coating: FDA Approved Fusion Epoxy Finish
  • Internals Material: Stainless Steel, 300 Series, NORYL™
  • Elastomer Material: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Fasteners Material: Stainless Steel, 300 Series
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI

Certificates & Approvals

  • ASSE® Listed 1013
  • AWWA Compliant C511, C550
  • CSA B64.4 Certified (4 inch thru 8 inch)
  • 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 NSF/ANSI/CAN 61 requirements (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

FAQs

What is the primary application for the Zurn Wilkins 475VBG backflow preventer?

This backflow preventer is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable supply, particularly for high health hazard applications.

What type of flow configuration does the Model 475VBG support?

The Model 475VBG is specifically designed for vertical flow up applications, featuring a compact Z-pattern configuration.

What are the end connections and valve type for this 4 inch unit?

This unit features 4 inch grooved end connections, designed for steel pipe, and is equipped with grooved end butterfly valves that include integral supervisory switches.

Is the Zurn Wilkins 475VBG lead-free?

Yes, the Model 475VBG meets the requirements of NSF/ANSI/CAN 61, ensuring it is lead-free with a maximum weighted average lead content of 0.25%.

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

The Zurn Wilkins 475VBG has a maximum working water pressure of 175 PSI and a maximum working water temperature of 140°F.

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