Watts 0792047 1/2" vacuum breaker this 1/2 inch lead free spill resistant atmospheric vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of lead free body construction, 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. It has a compact, space-saving design, and it is ideal for health hazard applications requiring continuous pressure such as on chemical dispensers or factory machine equipment. Maximum pressure is 150 psi (10.34 bar). Minimum pressure is 8 psi (0.55 bar).
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