Zurn Wilkins 1" 350 Double Check Backflow Assembly - 1-350
The Wilkins 1" 350 Double Check Backflow Valve Assembly is designed to protect non-potable irrigation and industrial systems from backflow contamination. Compact and serviceable, the 350 provides low health-hazard protection while minimizing downtime with maintenance-friendly features.
Ideal for landscape irrigation and other non-potable systems where low-hazard protection is required, the Wilkins 350 balances dependable performance with straightforward maintenance. Refer to the supplied specification sheet for installation dimensions, test port locations, and local code requirements. For parts, service advice, or replacement cartridges, contact an authorized distributor or technical support.
Features
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1" size: Engineered for 1-inch connections commonly used in irrigation and commercial water lines.
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Double-check protection: Provides low health-hazard backflow prevention for non-potable applications.
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Full-port QT ball valves included: Integrated full-port shutoff valves for reliable isolation during service and testing.
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EZSwap removable pressure vessel: Enables safe, convenient line flushing, quick winterization and simplified repairs without complete disassembly.
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Serviceability: Removable internals and accessible test ports make routine testing and maintenance straightforward for technicians.
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Documentation available: Specification sheet and product literature are provided for code compliance, installation, and parts information.
What our Experts Think
Q&A
Q: What is the Zurn Wilkins 1-350 used for?
A: It provides backflow protection in low-hazard, non-potable water systems like irrigation, preventing contaminated water from entering the clean water supply.
Q: What type of backflow device is the 1-350?
A: It is a Double Check Valve Assembly (DCVA), designed for protection against back-siphonage and backpressure in non-health-hazard applications.
Q: What are the key features of the 1" 350 model?
A: It includes a compact bronze body, dual check valves, full-port ball valves for isolation, and a serviceable design for easier maintenance and repair.
Q: Is it suitable for drinking water protection?
A: It is intended for non-potable or low-hazard systems; it is not used where high-hazard contamination protection (RPZ) is required.
Q: Does it reduce water pressure?
A: No, it is not a pressure-reducing valve. It only prevents reverse flow while maintaining normal system pressure.
Maintenance Tips
- Inspect regularly for leaks, corrosion, or damage to fittings and body.
- Test annually to confirm proper double-check backflow prevention and code compliance.
- Flush the assembly periodically to remove sediment and maintain smooth check operation.
- Clean or replace internal check components if sticking, noise, or reduced flow occurs.
- Replace worn seals, gaskets, or O-rings with approved repair kits when needed.
- Keep unit accessible and protected from freezing to ensure reliable long-term performance.
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