Watts 0792018 Valve

The Watts 0792018 LF800M4FR is a 1-inch pressure vacuum breaker designed for high-hazard backflow prevention in irrigation and industrial potable water systems. This Lead Free assembly features an integrated freeze protection relief valve, which activates when internal water temperatures drop near freezing, protecting the internal components and bronze body from rupture. Built with a modular check valve design and a durable silicone rubber disc, it ensures positive seating for superior reliability. The Watts LF800M4FR is rated for working pressures up to 150 psi and temperatures ranging from 33°F to 140°F. For technicians performing backflow preventer maintenance, the assembly includes two top-mounted test cocks for easy certification and troubleshooting. This unit is essential for preventing backsiphonage in systems where a health hazard cross-connection exists, providing a robust solution for professional plumbing and landscape contractors.

• Freeze Protection: Features a dedicated relief valve to mitigate damage caused by thermal expansion during cold weather cycles.
• Contractor-Friendly Design: Modular construction allows for simplified internal component replacement without specialized tools.
• Low Pressure Drop: Optimized internal flow path ensures maximum system efficiency and minimal head loss.
• Code Compliance: Meets ASSE 1020 and CSA B64.1.2 standards, ensuring it meets local plumbing code requirements.
• Corrosion Resistance: Lead-free bronze body construction provides long-term durability in harsh water conditions.

• What is the difference between the 800M4 and the LF800M4FR? The LF800M4FR is constructed from lead-free materials and includes a freeze-protection relief feature not found on the standard 800M4 model.
• Where should this vacuum breaker be installed? Per pressure vacuum breaker installation standards, it must be installed at least 12 inches above the highest downstream point of use.
• Can this unit be used under continuous pressure? Yes, the LF800M4FR is specifically designed for continuous pressure applications where only backsiphonage is a concern.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.