Watts 0792036 Vacuum Breaker

The Watts 0792036 (Model LF288A-1/4) is a critical anti-siphon vacuum breaker designed to prevent the backsiphonage of contaminated water into potable supplies. Specifically engineered for low-flow, non-continuous applications such as laboratory equipment or small-scale process piping, this 1/4 inch lead free vacuum breaker features a durable, lead free brass body construction. This model serves as the direct technical successor and lead free replacement for the legacy 288A-1/4 and 0336380 units. The internal lightweight disc float and chemical-resistant silicone seat are designed for high-heat resilience up to 180°F and significant water hammer shock resistance. With a full-size orifice, this valve ensures maximum pipe size flow capacity while maintaining a tight seal at pressures up to 125 PSI. For contractors upgrading sets to modern standards, this unit provides the necessary backsiphonage protection for health hazard installations without restricted flow typical of undersized alternatives.

Key Benefits for Technicians

• Lead Free Brass Construction: Ensures compliance with safe drinking water regulations for medical and laboratory potable water supply applications.
• Full-Size Orifice: Engineered to provide maximum flow capacity with minimal pressure drop across the 1/4" NPT connections.
• Silicone Disc Seat: Offers superior high heat resistance and durability against chemical exposure compared to standard EPDM components.
• Spill Prevention: The lightweight atmospheric vent assembly prevents nuisance spilling under variable flow rates and fluctuating pressures.
• Direct Retrofit: Functions as the updated, lead-free replacement for the older Watts 288A-1/4 and 0336380 atmospheric breakers.

Common Installation Questions

Can this vacuum breaker be used under continuous pressure?
No. Atmospheric vacuum breakers like the Watts LF288A are rated for non-continuous pressure only. Per ASSE standards, they should not be pressurized for more than 12 hours in a 24-hour period. For continuous pressure, a pressure vacuum breaker (PVB) is required.

Where should the LF288A-1/4 be installed?
Technicians must install this unit a minimum of 6 inches above the highest downstream point of the water system to ensure the atmospheric vent functions correctly during a loss of supply pressure.

Does this valve protect against backpressure?
This device is strictly for backsiphonage protection. It is not designed to handle backpressure scenarios where downstream pressure exceeds the supply pressure.

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.