2.5 475 RP, N-PATTERN, GRV X GRV, LESS GATE VALVES
Item Number: 212-475L
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Brand - Wilkins
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- Product Type: Reduced Pressure Principle Backflow Preventer
- Nominal Size: 2.5 inch
- End Connections: Grooved x Grooved
- Configuration: N-Pattern, Less Gate Valves
- Lead-Free construction (NSF/ANSI/CAN 61)
- Maximum Working Water Pressure: 175 PSI
- Ductile Iron body with FDA approved fusion epoxy finish
- ASSE® Listed 1013
Description
Description
The Zurn Model 475 Reduced Pressure Principle Backflow Preventer, 2.5 inch, offers critical protection for potable water lines against backsiphonage and backpressure in high hazard environments. Its N-Pattern design with grooved x grooved connections makes it ideal for compact new or retrofit installations, accommodating both vertical up and vertical down flow. Constructed with an epoxy-coated ductile iron body and lead-free materials, this backflow preventer ensures durability and compliance. The patented center-stem guided Compound Check provides superior reliability and low headloss. It features a single access cover to simplify maintenance. This model is supplied without gate valves.
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Connecting to Piping Systems
This 2.5 inch Zurn Model 475 Reduced Pressure Principle Backflow Preventer features grooved end connections, specifically designed for secure and reliable installation with steel pipe systems utilizing AWWA C606-87 grooved couplings. This model is supplied without gate valves, meaning isolation valves must be sourced separately for a complete installation.
Flow Direction & Pattern
The N-Pattern design of the Model 475 supports flexible installation in compact spaces, accommodating both vertical flow up and vertical flow down applications.
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Additional Details
The Zurn Model 475 Reduced Pressure Principle Backflow Preventer, 2.5 inch, is designed to protect potable water lines from both backsiphonage and backpressure in high hazard applications.
Its N-Pattern configuration is suitable for installation in compact spaces, supporting both vertical up and vertical down flow applications, and comes with grooved x grooved connections, without gate valves.
Features
- N-Pattern design: space-saving, ideal for retrofit installations, and accommodates vertical flow up and vertical flow down applications.
- Lead-free construction, meeting NSF/ANSI/CAN 61 requirements for potable water.
- Patented, center-stem guided Compound Check for low headloss, superior reliability, and unmatched performance.
- Single access cover facilitates reduced maintenance downtime and repair costs.
- Epoxy coated ductile iron body (ASTM A536 Grade 4) for enhanced corrosion resistance.
- Designed for high hazard potable water applications.
- This product is supplied less shut-off valves.
Materials
- Main Valve Body: Ductile Iron ASTM A536 Grade 4 with FDA Approved fusion epoxy finish.
- Access Covers: Ductile Iron ASTM A536 Grade 4.
- Internals: Stainless Steel, 300 Series and NORYL™.
- Fasteners: Stainless Steel, 300 Series.
- Elastomers: EPDM (FDA approved) and Buna Nitrile (FDA approved).
- Polymers: NORYL™.
- Springs: Stainless steel, 300 series.
Specifications
- Product Type: Reduced Pressure Principle Backflow Preventer
- Model: 475
- Nominal Size: 2.5 inch
- End Connections: Grooved x Grooved
- Configuration: N-Pattern, Less Gate Valves
- Body Material: Ductile Iron ASTM A536 Grade 4
- Body Coating: FDA Approved Fusion Epoxy Finish
- Internals: Stainless Steel, 300 Series, NORYL™
- Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
- 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 (with gates only)
- AWWA Compliant C550
- CSA B64.4 (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
- NSF/ANSI/CAN 61 Compliant (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
FAQs
What is the primary use of the Zurn Model 475 Backflow Preventer?
It is designed to protect potable water lines from contamination due to both backsiphonage and backpressure, making it suitable for high hazard applications.
What type of end connections does this specific 2.5 inch Model 475 have?
This model features grooved x grooved end connections, which are designed for secure and reliable installation with steel piping systems.
Is this backflow preventer suitable for vertical installations?
Yes, its N-Pattern configuration is specifically designed for installations requiring vertical flow up and vertical flow down, especially in compact spaces.
Is the Zurn Model 475 lead-free?
Yes, it meets the requirements of NSF/ANSI/CAN 61, ensuring it is lead-free with a maximum weighted average lead content of 0.25%.
What are the key materials used in the construction of this backflow preventer?
The main valve body and access covers are made of epoxy-coated ductile iron (ASTM A536 Grade 4), while internals, fasteners, and springs are stainless steel. Elastomers include FDA approved EPDM and Buna Nitrile.
