Description
Zurn Wilkins 8″ 375AST RPZ Backflow Preventer | Stainless Steel, NRS Gate Valves.
Product Overview:
Engineered for municipal and commercial infrastructure, the Zurn Wilkins 8″ 375AST RPZ Backflow Preventer safeguards large potable water systems against dangerous backpressure and backsiphonage. It features a corrosion-resistant stainless steel body, high-capacity flow path, and field-serviceable components for long-lasting, code-compliant performance.
Features & Benefits:
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Oversized capacity for mainline protection
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RPZ configuration with dual check valves and relief zone
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Stainless steel housing resists aggressive water conditions
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NSF 61 & 372 compliant for potable use
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Full-port NRS gate valves offer clear bore
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Compact body for installation flexibility
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Approved for retrofit and new installs
Specifications:
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Size: 8″
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Body: 304L Stainless Steel
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Pressure: 175 PSI
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Test Pressure: 350 PSI
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Temp: 140°F Max
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Ends: Grooved or Flanged
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Certifications: ASSE 1013, FM®, UL®, NSF®, CSA®, IAPMO®
Installation Tips:
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Install horizontally or vertically per code
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Maintain 12–30″ clearance above floor level
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Pipe discharge line from relief valve to an approved drain
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Always test after installation to ensure compliance
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Review local jurisdictional backflow standards
FAQs:
Q: What makes the 375AST suitable for large-scale systems?
A: Its full-port design and stainless construction handle high flow and aggressive conditions.
Q: Can I replace legacy RPZ valves with this model?
A: Yes, this unit is retrofit-compatible and meets current code.
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