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Backflow Prevention


Lead Free* Spill Resistant Atmospheric Vacuum Breakers

Lead Free* Models Available


1/2 to 3/4 in. (15 to 20mm)


Series LF289 Spill Resistant Atmospheric Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of Lead Free* Copper Silicon
Alloy (LF289), silicone rubber check disc, stainless steel springs, a lightweight plastic disc float that minimizes deposits and scaling, a spring-loaded atmospheric vent with O-ring, and a spill-resistant diaphragm seal. Series LF289 has a compact, space-saving design, and is ideal for health hazard applications such as on chemical dispensers or factory machine equipment. Maximum Pressure:150psi (10.34 bar), Minimum Pressure: 8psi (.55 bar).

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

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