Wilkins 375 Reduced Pressure RPZ Backflow Preventer - 1" 1-375

The Wilkins 375 Reduced Pressure Principle (RPZ) Backflow Preventer, model 1-375, is a 1-inch assembly engineered for high-hazard, non-potable applications. Rated to 175 PSI, this compact RPZ uses a serviceable pressure vessel and modular check assemblies to simplify maintenance and reduce downtime. Its flanged, epoxy-coated ductile iron body and durable internals are built for outdoor irrigation, fireline, and industrial use where protection against back-pressure and back-siphonage is required.

• Size & Capacity: 1-inch nominal size; maximum working pressure 175 PSI; compact form factor for tight installations.
• Serviceability: EZSwap-style removable pressure vessel and modular checks allow faster flushing, easier servicing, and off‑line repairs.
• Construction: Epoxy-coated ductile iron body with durable internals and corrosion-resistant fasteners for long field life.
• Certifications & Standards: ASSE 1013, IAPMO, CSA B64.4, and AWWA-compliant design (check specific listings for variants).
• Applications: Ideal for irrigation, landscape, commercial non-potable lines, and other high-hazard installations where lead-free certification is not required.

Refer to the manufacturer specification sheet and installation manual for exact dimensions, connection options, and accessory part numbers. The standard 1-375 contains leaded components and is not intended for potable water systems; choose the 375XL lead‑free variant when low‑lead compliance is required. Have installation and annual testing performed by a licensed backflow technician to maintain compliance and reliable operation.