6 475 RP, N-PATTERN, GRV X GRV, LESS GATE VALVES

Item Number: 6-475L
1 1
$14,189.32
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 6 inch
  • Model: 475 N-Pattern
  • End Connections: Grooved x Grooved
  • Shut-Off Valves: Less Shut-Off Valves
  • Maximum Working Pressure: 175 PSI
  • Body Material: Epoxy coated ductile iron
  • Check Type: Patented center-stem guided Compound Check
  • Certifications: ASSE® 1013, NSF/ANSI/CAN 61

Description

The Zurn 6-inch Model 475 Reduced Pressure Principle Backflow Preventer (6-475L) is designed for high-hazard potable water applications, protecting against backsiphonage and backpressure. Its N-Pattern configuration is ideal for installations in compact spaces, accommodating both vertical up and vertical down flow. Constructed with an epoxy-coated ductile iron body and featuring patented center-stem guided Compound Checks, it ensures reliable performance and corrosion resistance. This unit comes with grooved end connections and does not include shut-off valves, streamlining installation where separate valving is preferred. Certified to ASSE 1013 and NSF/ANSI/CAN 61 standards, it provides robust water system protection.

Help Me Connect

Connecting Your Zurn Model 475 Backflow Preventer

This 6-inch Zurn Model 475 backflow preventer features grooved end connections on both the inlet and outlet. These connections are designed to be installed onto steel pipe using appropriate grooved couplings, conforming to AWWA C606-87 standards. Ensure that your piping system and connecting components are compatible with grooved connections of this size and type.

View full details

Additional Details

The Zurn Model 475 Reduced Pressure Principle Backflow Preventer protects potable water lines from contamination due to backsiphonage and backpressure. This 6-inch assembly is designed for vertical flow up and vertical flow down applications, featuring an N-Pattern configuration ideal for compact spaces and retrofit installations.

Key Features

  • N-Pattern design for versatile installation in tight spaces.
  • Equipped with a patented, center-stem guided Compound Check for low headloss and superior reliability.
  • Epoxy coated ductile iron body and access covers for enhanced corrosion resistance.
  • Single access cover design helps reduce maintenance downtime and repair costs.
  • Designed for grooved end connections without shut-off valves.

Local codes govern installation requirements. Always install according to manufacturer instructions and the latest edition of the Uniform Plumbing Code.

Specifications

General

  • Model: 475
  • Size: 6 inch
  • Configuration: N-Pattern
  • End Connections: Grooved for steel pipe
  • Shut-Off Valves: Less Shut-Off Valves

Performance

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

Materials

  • Main Valve Body: Ductile Iron ASTM A536 Grade 4
  • Access Covers: Ductile Iron ASTM A 536 Grade 4
  • Coatings: FDA Approved fusion epoxy finish
  • Internals: Stainless steel, 300 Series; NORYL™
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved); Buna Nitrile (FDA approved)
  • Polymers: NORYL™
  • Springs: Stainless steel, 300 series

Certificates & Approvals

  • ASSE® Listed 1013
  • AWWA Compliant C511 (with gates only)
  • AWWA Compliant C550
  • CSA B64.4 Certified (4" thru 8")
  • 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 the requirements of NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

Dimensions & Weight (approximate)

  • Weight (Less Shut-Off Valves): 171 lbs (78 kg)

FAQs

What is the primary use of the Zurn Model 475 backflow preventer?

The Zurn Model 475 is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable supply, especially where a potential health hazard exists.

What type of flow applications is the Model 475 suitable for?

The Model 475, with its N-Pattern shape, is suitable for applications requiring both vertical flow up and vertical flow down, making it versatile for new or retrofit installations in compact spaces.

What are the end connections for this Zurn Model 475?

This specific Model 475 backflow preventer features grooved end connections on both the inlet and outlet, designed for use with steel piping and appropriate grooved couplings.

Does this unit include shut-off valves?

No, this particular Zurn Model 475 configuration is supplied "less shut-off valves," meaning shut-off valves are not integrated into the assembly and must be supplied separately if needed.

What is the maximum working water pressure and temperature for this device?

The maximum working water pressure for the Zurn Model 475 is 175 PSI, and the maximum working water temperature is 140°F.

Related Products