Zurn - 3/4" 375 Series Pressure Reducing Valve

The Zurn Wilkins 375XL Reduced Pressure Principle Backflow Preventer is designed to safeguard potable water supplies from backsiphonage and backpressure contamination risks. Ideal for both residential and commercial potable water applications, it combines durable construction with smart theft-deterrent features and effortless maintenance via its removable pressure vessel design.

Key Features:

• Patented removable pressure vessel enables easy maintenance and winterization
• Black fusion epoxy coating camouflages and deters theft
• Durable, UV- and weather-resistant composite housing with stainless steel components
• FNPT x FNPT connections with integral "Y" type strainer for installation efficiency
• Rated for 175 PSI working pressure and up to 180°F water temperature
• Ideal for use in potable water systems requiring high hazard protection

Construction & Durability:

• Housing: Reinforced FDA-approved nylon composite
• Fasteners and springs: 300 series stainless steel for corrosion resistance
• Elastomers: FDA-approved silicone and Buna Nitrile
• Internals: NSF-listed Delrin and nylon components
• Ball Valves: ASTM B584 cast bronze
• Optional epoxy-coated bronze struts and hardware for theft resistance

Performance & Functionality:

• Operating pressure: Up to 175 PSI
• Hydrostatic test pressure: 350 PSI
• Max water temperature: 180°F
• Standard FNPT threads meet ANSI B1.20.1
• Removable pressure vessel allows offline servicing and faster repairs
• Engineered for chloramine-treated water systems

Ease of Installation & Use:

• Pressure vessel removes in seconds for seasonal blowouts and maintenance
• Compatible blowout flush fitting simplifies winterization
• Minimal components for quick repair and easy part replacement
• Compliant with vertical or horizontal installations (Model 350XL approved for both)

Technical Specifications:

• Operating Pressure Range: 0–175 PSI
• Hydrostatic Test Pressure: 350 PSI
• Max Water Temperature: 180°F
• End Connections: Threaded FNPT (ANSI B1.20.1)
• Material: Reinforced Nylon body, bronze valves and struts
• Size: 3/4”
• Pressure Vessel: Composite, UV-resistant
• Thread Type: FNPT x FNPT
• Optional black epoxy coating with vandal-resistant hardware

Installation & Application:

• Recommended Uses: Potable water systems in residential, commercial, and municipal installations
• Installation Method: In-line on water service lines, 12"–30" above grade per UPC
• Soil & Climate Suitability: UV and weather-resistant for harsh outdoor environments

Compatibility & Optional Accessories:

• Compatible with blowout flush fitting for seasonal maintenance
• Works with standard repair kits: rubber-only, replacement checks, full pressure vessels
• Optional epoxy-coated bronze hardware reduces theft and scrap value
• Available in lead-free options to meet local code compliance

Certifications & Compliance:

• ASSE® Listed 1013
• IAPMO® Listed
• CSA® B64.4
• AWWA Compliant C511
• USC Foundation for Cross Connection Control Approved
• UL® and C-UL® Classified (less shut-off valves only, 3/4"–2")