Description
Zurn Wilkins 6″ 375AST RPZ Backflow Preventer | Stainless Steel, NRS Gate Valves.
Product Overview:
The Zurn Wilkins 6″ 375AST RPZ Backflow Preventer is built to protect large-scale potable water systems from serious contamination risks. Designed for industrial, municipal, and campus applications, this assembly combines high-volume flow capacity with reliable backflow prevention in a rugged stainless steel housing.
Features & Benefits:
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Designed for high-demand systems with health hazard concerns
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RPZ assembly with dual checks and a relief valve
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Stainless steel body with corrosion-resistant internals
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Full-port NRS gate valves for maximum system flow
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Lead-free certification ensures potable water compliance
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Simple in-line service access
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Ideal for fire protection, HVAC, and city supply lines
Specifications:
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Size: 6″
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Body Material: 304L 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 / Flanged
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Certifications: ASSE 1013, UL®, FM®, CSA®, NSF 61 & 372
Installation Tips:
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Install 12–30″ above finished grade
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Ensure drainage for relief valve discharge
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Maintain clear space around test ports and valve bodies
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Use proper anchoring and support for heavy lines
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Comply with fire, plumbing, and water utility regulations
FAQs:
Q: Can this RPZ assembly handle continuous high flow?
A: Yes, the full-port design and relief valve are built for industrial-grade flow conditions.
Q: How often should I test this valve?
A: Most jurisdictions require annual testing; follow your local backflow program.
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