Wilkins Double Check AssemblySECTION NAVIGATION
![]() Model 450 (Sizes 2-1/2" - 10")Designed for installation on potable water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 450 shall provide protection where a potential health hazard does not exist. Ideal for use where lead-free* valves are required.
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