6 475 RP DI BODY N PATTERN VERT BFLY GRV X GRV

Item Number: 6-475VBG
1 1
$23,402.10
Special Order
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
  • Size: 6 inch
  • Body Material: Ductile Iron ASTM A 536 Grade 4
  • Connection Type: Grooved End Butterfly Valves
  • Installation: Vertical Flow Up (Z-Pattern)
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: Up to 140°F
  • Certifications: ASME 1013, CSA B64.4, FM Approved, NSF Listed

Description

The Zurn 475VBG 6 inch Reduced Pressure Principle Backflow Preventer protects potable water systems from high-hazard backpressure and backsiphonage. This ductile iron unit is designed for vertical flow up installations with grooved end butterfly valves that include integral supervisory switches. It features a patented, center-stem guided Compound Check for low headloss and superior reliability, making it suitable for both new projects and retrofits in compact spaces. Approved by ASME, AWWA, CSA B64.4, FM, and NSF, it ensures safe and compliant operation with a maximum working pressure of 175 PSI. Item number 6-475VBG.

Help Me Connect

Connections

  • This Zurn 475VBG backflow preventer features grooved end connections, designed for secure and efficient installation with compatible grooved piping systems.
  • It includes butterfly valves with integral supervisory switches on both the inlet and outlet, which connect to a monitoring system to indicate their open or closed status.

Installation Orientation

This unit is specifically designed for vertical flow up applications, meaning water enters from the bottom and exits from the top. The compact z-Pattern configuration is optimized for space-constrained installations or retrofits where vertical piping is present.

View full details

Additional Details

The Zurn 475VBG 6 inch Reduced Pressure Principle Backflow Preventer provides high hazard protection for potable water applications, safeguarding against both backsiphonage and backpressure of contaminated water into the supply.

This backflow regulator is designed for vertical flow up installations in a compact z-Pattern orientation, making it ideal for new or retrofit projects with limited space.

Key Features

  • Features a single access cover to minimize maintenance downtime and simplify repairs.
  • Equipped with grooved end butterfly valves that include integral supervisory switches for enhanced monitoring and control.
  • Utilizes a patented, center-stem guided Compound Check for reliable performance, superior accuracy, and low headloss.
  • Constructed with a Ductile Iron body for durability and strength.

Installation & Use

  • Designed for vertical flow up applications.
  • Suitable for protecting potable water systems from high hazard contamination.
  • Its compact footprint facilitates easy retrofits in constrained spaces.

Specifications

General

  • Model: 475V
  • Size: 6 inch
  • Flow Pattern: Z-Pattern (Vertical Up)
  • Application: High Hazard, Potable Water
  • Connections: Grooved End
  • Valves: Butterfly Valves with Integral Supervisory Switches

Pressure & Temperature

  • Maximum Working Pressure: 175 PSI
  • Maximum Working Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI

Materials

  • Body Material: Ductile Iron ASTM A 536 Grade 4
  • Main Access Covers: Ductile Iron ASTM A 536 Grade 4
  • Coating: FDA Approved Fusion Epoxy Finish
  • Internals: Stainless Steel, 300 Series
  • Springs: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA Approved), Buna Nitrile (FDA Approved)
  • Poppet: NORYL™

Certificates & Approvals

  • ASME® Listed 1013
  • AWWA Compliant C511 (with gates only)
  • CSA® Certified B64.4 (4" thru 6")
  • CUL® Classified
  • cULus® Classified
  • FM® Approved
  • NYC MEA 268-99-M VOL 4
  • Approved by Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California (USC-FCCC)
  • NSF® Listed (4" and 6" sizes)

FAQs

What type of backflow protection does the Zurn 475VBG offer?

The Zurn 475VBG is a Reduced Pressure Principle (RP) backflow preventer, providing high hazard protection against both backsiphonage and backpressure in potable water systems.

What are the specific installation requirements for this backflow preventer?

This model is designed for vertical flow up installations. Its z-Pattern configuration is optimized for spaces where vertical piping is present, ideal for new builds or retrofitting into compact areas.

What are the connections on the 6 inch Zurn 475VBG?

The unit features grooved end connections, which are compatible with grooved piping systems. It comes equipped with butterfly valves that have integral supervisory switches for monitoring.

What is the maximum operating pressure and temperature for this device?

The Zurn 475VBG has a maximum working pressure of 175 PSI and can operate in water temperatures up to 140°F. It is hydrostatically tested to 350 PSI.

What materials are used in the construction of the Zurn 475VBG?

The body and main access covers are made from Ductile Iron ASTM A 536 Grade 4 with an FDA approved fusion epoxy coating. Internals and springs are Stainless Steel (300 Series), while elastomers are EPDM and Buna Nitrile (both FDA approved).

Related Products