Zurn Wilkins 3" 375AST RPZ Backflow Preventer | Stainless Steel, NRS Gate Valves.
Product Overview:
The Zurn Wilkins 3" 375AST RPZ Backflow Preventer provides superior protection for potable water lines where a health hazard may exist. Built with a durable 304L stainless steel body and non-rising stem (NRS) gate valves, this reduced pressure zone assembly ensures long-lasting performance, ease of maintenance, and full compliance with backflow prevention regulations. Designed for commercial and industrial systems, its short lay length simplifies installation in confined areas.
Features & Benefits:
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Dual-check with pressure relief zone to prevent backsiphonage and backpressure
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Compact design ideal for retrofit or space-constrained installs
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Stainless steel body and NORYL™ internal components for corrosion resistance
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Lead-free construction meets NSF/ANSI 372 certification
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Non-rising stem gate valves allow for full flow with minimal space needs
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Accessible in-line servicing without removing the valve from the pipeline
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Certified for vertical and horizontal installation
Specifications:
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Size: 3"
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Body & Cover: 304L Stainless Steel
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Check Components: Stainless Steel, NORYL™, EPDM, Buna-N
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Max Working Pressure: 175 PSI
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Test Pressure: 350 PSI
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Operating Temp: up to 140°F
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End Connections: Grooved (AWWA C606) or Flanged (ANSI B16.1 Class 125)
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Compliance: ASSE 1013, NSF 61 & 372, FM®, UL®, CSA®, IAPMO®
Installation Tips:
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Install 12" to 30" above grade with proper drainage access
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Ensure no portion of the assembly is submerged
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Leave adequate space around the unit for testing and maintenance
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Follow all local code requirements for backflow prevention assemblies
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Approved for both vertical and horizontal configurations
FAQs:
Q: What is an RPZ backflow preventer?
A: It’s a reduced pressure zone device with two checks and a relief valve to stop contaminated water from entering the potable system.
Q: Can this be installed outdoors?
A: Yes, with appropriate freeze protection and above-grade placement per code.
Q: Are these valves lead-free?
A: Yes, the assembly is fully certified to NSF/ANSI 372 for use in potable systems.
Q: Can the check assemblies be serviced in-line?
A: Yes, all internal components are accessible without removing the unit.
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