This Watts LF7U2-2 3/4-inch lead-free brass dual check valve backflow preventer is designed for non-health hazard residential water system containment and continuous pressure applications. It features a durable lead-free brass construction with two compact, replaceable check modules and stainless steel springs. The valve can be installed in either a vertical or horizontal position immediately downstream of the residential water meter or at individual outlets to prevent the reverse flow of contaminated water into the potable drinking water supply. This plumbing hardware is rated for a maximum working pressure of 175 PSI and has a temperature range of 33 to 180 degrees Fahrenheit. This item is in used fair condition

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