Watts Water Technologies LF800M4-QT Pressure Vacuum Breaker

Description:

The Watts LF800M4-QT Pressure Vacuum Breaker is a 1/2 inch lead-free backflow prevention device used in potable water systems to protect against backsiphonage and contamination of the water supply. Commonly installed in irrigation systems, laboratory equipment, commercial water distribution systems, industrial wash stations, agricultural applications, and specialty process water systems where backflow protection is required. Maintenance personnel, plumbing contractors, OEMs, and facility managers use this backflow preventer for regulatory compliance, system upgrades, replacement projects, and new installations requiring reliable cross-connection control.

Applications:

The Watts LF800M4-QT Pressure Vacuum Breaker is widely used in lawn and landscape irrigation systems, commercial sprinkler installations, agricultural water distribution networks, greenhouse operations, industrial process water systems, laboratory facilities, schools, hospitals, manufacturing plants, municipal water systems, washdown stations, cooling equipment, and commercial building plumbing systems. The device provides protection against backsiphonage conditions that could contaminate potable water supplies and is commonly specified in applications where local plumbing codes require approved backflow prevention assemblies. Its lead-free construction makes it suitable for drinking water applications while helping facilities maintain compliance with water safety regulations and cross-connection control programs.

Technical Specifications:

• Manufacturer Part Number (MPN): LF800M4-QT
• Brand: Watts
• Product Type: Pressure Vacuum Breaker Backflow Preventer
• Series: LF800M4-QT
• Connection Size: 1/2 in.
• Connection Type: Female NPT
• Body Material: Lead-Free Bronze
• Bonnet Material: Engineered Polymer
• Check Valve Type: Spring Loaded
• Backflow Protection: Backsiphonage Prevention
• Shutoff Valves: Quarter-Turn Ball Valves
• Test Cocks: Included
• Service Media: Potable Water
• Lead-Free: Yes
• Installation Orientation: Vertical
• Application: Irrigation and Potable Water Systems
• Compliance: ASSE and CSA Approved Models Available
• Function: Cross-Connection Control and Backflow Prevention

Common Replacements:

• Watts LF800M4-QT 1/2" Repair Assembly
• Febco 765 1/2" Pressure Vacuum Breaker
• Zurn Wilkins 720A 1/2" Pressure Vacuum Breaker