The 350XL Double Check Backflow Assembly from Zurn Wilkins is engineered for plumbing engineers, fire protection contractors, and water system managers focused on protecting potable water and fire protection networks from contamination. Its rugged design and advanced features make it an essential component for maintaining water safety in commercial and institutional settings.

• Durable Construction: Cast iron body with an epoxy coating resists corrosion while meeting potable water standards, suitable for demanding environments.
• Stainless Steel Internals: Type 304 stainless steel springs and fasteners enhance mechanical strength and reduce wear, especially in humid or moisture-exposed locations.
• High-Performance Check Valve Seats: Reversible EPDM elastomer seats provide reliable sealing against backflow and can be replaced on-site to simplify maintenance.
• EZSwap Pressure Vessel Compatibility: Allows quick flushing and winterization without shutting down the system, minimizing downtime during maintenance.
• Regulatory Certified: UL Listed (UL 312), FM Approved, and compliant with NFPA 13 and NFPA 25 standards, ensuring trustworthy performance in fire protection applications.
• Versatile Installation Options: Supports up to 175 PSI with ANSI B16.1 flanged ends and AWWA C606 grooved couplings, adaptable to various municipal water and fire service piping configurations.
• Multi-Orientation Flow Design: Suitable for both horizontal and vertical upward flow setups, enhancing flexibility for mechanical rooms or underground vault installations.

By preventing backflow contamination, this assembly maintains critical water quality that safeguards health and safety. Its corrosion-resistant materials ensure long-term reliability while the EZSwap compatibility feature simplifies routine maintenance without interrupting operation. Designed for professionals seeking a robust, adaptable, and code-compliant backflow solution, the 350XL effectively minimizes risk and operational disruptions in potable water and fire protection systems.