Watts 0792040 Vacuum Breaker

The Watts 0792040 is a high-performance 1 inch atmospheric vacuum breaker engineered for non-continuous pressure applications in potable water systems. As a veteran-grade lead-free anti-siphon valve, this unit is the direct replacement for 0336416, 288A-1, and LF288A-1 models, ensuring compliance with current safe drinking water standards. Designed with a full-size orifice, it maintains maximum flow capacity while minimizing pressure drop across the line. The rugged brass body construction houses a specialized silicone seat disc that provides superior resistance to thermal shock and water hammer, ensuring a positive seal even in low-flow laboratory or industrial equipment setups. This LF288A backflow preventer features a lightweight disc assembly that effectively vents the assembly to atmosphere at zero or negative pressure, preventing backsiphonage of contaminated fluids into the primary water supply. Rated for temperatures up to 180°F and a maximum working pressure of 125 PSI, it remains the standard choice for contractors requiring a reliable 1" FNPT vacuum breaker for health-hazard protection.

• Direct Retrofit: Seamlessly replaces legacy Watts 288A and 0336416 models for immediate lead-free compliance.
• Maximum Flow Efficiency: The full-size orifice design ensures streamlined water passages for high-volume delivery.
• Durable Seating: Equipped with a chemical-resistant silicone disc for tight seating and longevity in hot or cold water applications.
• Anti-Spilling Design: Lightweight "disc float" mechanism prevents accidental spillage under varying flow rates.
• Code Compliance: Meets ASSE 1001 and ANSI A112.1.1 requirements for atmospheric backflow prevention.

Is the Watts 0792040 suitable for continuous pressure?
No, this is an atmospheric type vacuum breaker. It is designed for non-continuous pressure and should not be pressurized for more than 12 hours. For continuous pressure, use a pressure vacuum breaker (PVB) like the LF800 series.

Can I install this 1" vacuum breaker in any orientation?
Atmospheric vacuum breakers must be installed vertically. They must also be positioned at least 6 inches above the highest downstream point (non-health hazard) or the equipment flood rim to function correctly.

What makes this specific model "Lead Free"?
The Watts LF288A series is manufactured with a wetted surface containing less than 0.25% lead by weight, meeting all current UPC and national plumbing standards for potable water connections.

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.