Description
Zurn Wilkins 4″ 375AST RPZ Backflow Preventer | Stainless Steel, NRS Gate Valves.
Product Overview:
The Zurn Wilkins 4″ 375AST RPZ Backflow Preventer is designed to protect potable water systems in environments where health hazards exist. With a corrosion-resistant stainless steel body and non-rising stem gate valves, this RPZ backflow assembly delivers outstanding flow capacity, reliability, and low maintenance requirements in commercial and institutional applications.
Features & Benefits:
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Backflow protection for systems with potential health hazards
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Durable 304L stainless steel body
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Short body length for compact installations
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NRS gate valves maximize space and safety
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Certified for potable systems – lead-free and NSF compliant
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Modular check and relief valve assemblies simplify servicing
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Approved for horizontal and vertical installations
Specifications:
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Size: 4″
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Body: 304L Stainless Steel
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Components: NORYL™, EPDM, Stainless Steel
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Working Pressure: 175 PSI
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Test Pressure: 350 PSI
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Max Temp: 140°F
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End Connections: Grooved or Flanged
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Certifications: ASSE 1013, NSF 61/372, FM®, UL®, CSA®, IAPMO®
Installation Tips:
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Install above ground with a minimum clearance of 12″
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Allow adequate space for future testing and repairs
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Never install in a location subject to flooding or submersion
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Secure all drain lines from the relief valve to a proper discharge location
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Follow the manufacturer’s maintenance schedule
FAQs:
Q: Is this RPZ model compliant with current plumbing codes?
A: Yes, it meets or exceeds ASSE, NSF, and local backflow code standards.
Q: Can I replace older RPZ models with this unit?
A: Yes, this assembly is retrofit-ready and compatible with older models.
Q: Does the unit come with test cocks?
A: Yes, factory-installed test cocks are included for certification testing.
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