Watts 0792039 Breaker

The Watts 0792039 is a 3/4 inch LF288A anti-siphon vacuum breaker engineered for high-performance protection in non-continuous pressure applications. As the direct updated replacement for the 0336410 model, this lead-free brass backflow preventer is critical for isolating potable water supplies from potential contaminants caused by backsiphonage. Techs value the full-size orifice, which is specifically designed to minimize pressure loss while maintaining maximum flow capacity across the 3/4" FNPT connections. Unlike standard atmospheric vents, the Watts LF288A utilizes a lightweight, heat-resistant silicone disc float rated for temperatures up to 180°F, ensuring a positive seal even under low-flow conditions often found in laboratory and medical equipment installations.

For contractors in the field, this atmospheric vacuum breaker stands out due to its technical resilience against water hammer shock and its 125 PSI maximum working pressure rating. When replacing an older Watts vacuum breaker, or upgrading a commercial plumbing system to meet modern lead-free codes like ASSE 1001 or CSA B64.1.1, the 0792039 provides the necessary durability to prevent downstream pollutants from reversing flow. Its streamlined internal water passages and chemical-resistant seating make it a reliable choice for maintaining system integrity in both hot and cold water health-hazard applications.

• Lead-Free Brass Construction: Fully compliant with lead-free mandates for potable water safety.
• Optimized Flow: Full-size orifice maintains pipe size capacity, reducing operational energy consumption and pressure drops.
• High Thermal Rating: Durable silicone disc handle temperatures up to 180°F (82°C) without compromising the seal.
• Leak Prevention: Precision-weighted disc float prevents atmospheric venting spills across all flow rates.
• Interchangeability: Direct replacement for the legacy 0336410 and earlier LF288A-3/4 models.

Can the LF288A be used under continuous pressure?
No. Per ASSE 1001 standards, this device should not be pressurized for more than 12 hours in a 24-hour period. For continuous pressure requirements, look for a pressure-type vacuum breaker like the Watts LF800 series.

What is the proper installation height for this breaker?
To function correctly as an anti-siphon device, it must be installed at least 6 inches (152mm) above the highest point of the downstream piping or hose outlet.

Can I install a shutoff valve downstream of this unit?
Absolutely not. Atmospheric vacuum breakers cannot have any shutoff valves downstream. Doing so can cause the device to fail or leak during operation.

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.