WILKINS MODEL 700 DUAL CHECK VALVE, 1 IN. FEMALE UNION X 1 I

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 700 shall provide protection where a potential health hazard does not exist. | Main valve body - Cast Bronze ASTM B 584 | Elastomers - Buna Nitrile (FDA approved) | Polymers - Noryl ®, NSF Listed (1/4"-1/2"), Delrin ®, NSF Listed (3/4"-1") | Springs - Stainless Steel, 300 Series