2.5 475 RP DI BODY N PATTERN, VERTICAL, OSY FLG X FLG
Item Number: 212-475VOSY
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Regular price
$10,279.22
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When Will it Ship:
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Estimated transit time: 2 to 5 Business Days
Brand - Wilkins
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- Size: 2.5 inch
- Body Material: Ductile Iron ASTM A 536 Grade 4
- Application: High Hazard, Potable Water
- Installation: Vertical Flow Up
- Body Pattern: N-Pattern
- Maximum Working Pressure: 175 PSI
- Maximum Working Water Temperature: 140°F
- Connections: OSY Flanged for steel pipe
Description
Description
The Zurn 2.5 inch Model 475V Reduced Pressure Principle Backflow Preventer (SKU 212-475VOSY) is designed to protect potable water systems from high hazards, preventing both backsiphonage and backpressure. This N-Pattern unit is configured for vertical flow up installations, making it suitable for compact spaces. It features a durable ductile iron body with an FDA approved fusion epoxy coating and OSY flanged connections. Equipped with a patented, center-stem guided Compound Check, it ensures reliable performance and low headloss. It operates up to 175 PSI and 140°F.
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Connections and Installation
- This 2.5 inch backflow preventer features OSY (Outside Stem and Yoke) flanged connections, designed for robust installation with steel pipe.
- The unit is specifically configured for vertical flow up applications.

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Additional Details
The Zurn Model 475V Reduced Pressure Principle Backflow Preventer is designed for high hazard, potable water applications, protecting against both backsiphonage and backpressure. This 2.5 inch model features an N-Pattern body for compact installations and is configured for vertical flow up applications.
Key Features
- N-Pattern body is ideal for installations where space is a constraint.
- Configured for vertical flow up applications, suitable for retrofits or new construction.
- Equipped with a single access cover to simplify maintenance and reduce downtime.
- Incorporates a patented, center-stem guided Compound Check for reliable performance, superior reliability, and low headloss.
- Constructed with a Ductile Iron body and protected with an FDA Approved fusion epoxy finish.
- Includes OSY flanged connections for secure installation.
Specifications
- Size: 2.5 inch
- Model: 475V
- Body Pattern: N-Pattern
- Application: High Hazard, Potable Water
- Installation Orientation: Vertical Flow Up
- Main Case Material: Ductile Iron ASTM A 536 Grade 4
- Access Covers Material: Ductile Iron ASTM A 536 Grade 4
- Coatings: FDA Approved fusion epoxy finish
- Internals Material: Stainless Steel, 300 Series, NORYL™
- Fasteners Material: Stainless Steel, 300 Series
- Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
- Polymers: NORYL™
- Springs Material: Stainless Steel, 300 Series
- Maximum Working Pressure: 175 PSI
- Maximum Working Water Temperature: 140°F
- Hydrostatic Test Pressure: 350 PSI
End Connections
- Connection Type: Flanged (OSY)
- Pipe Compatibility: Steel Pipe
Certificates & Approvals
- ASME® Listed 1013
- AWWA Compliant C511 (with gate valves), and C550 (CSA® Certified B64.4 (4" thru 8"))
- CSA B64.4
- CULUS® Listed
- UL® Classified
- FM® Approved
- NYC MEA 258-99-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. WEIGHED AVERAGE LEAD CONTENT)
FAQs
What is the primary function of the Zurn 475V backflow preventer?
Its primary function is to protect potable water systems from high hazards by preventing both backsiphonage and backpressure.
What type of flow configuration and pattern does this model have?
This Zurn 475V model features an N-Pattern body and is specifically designed for vertical flow up installations.
What are the main materials used in the construction of this backflow preventer?
The main case and access covers are made from Ductile Iron ASTM A 536 Grade 4, with an FDA approved fusion epoxy finish. Internals and fasteners are Stainless Steel, 300 Series.
What kind of connections does the Zurn 475V backflow preventer utilize?
This model uses OSY flanged end connections, which are designed for robust installation with steel pipe.
What are the maximum operating pressure and temperature limits?
The Zurn 475V can withstand a maximum working pressure of 175 PSI and a maximum working water temperature of 140°F.
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