This ProLine 3/4-inch FIP x FIP female threaded in-line check valveGo to product viewer dialog for this item. is constructed from durable, heavy-duty brass and engineered to prevent backflow in residential or commercial plumbing systems. It features a spring-loaded self-closing poppet mechanism and an O-ring seal to ensure a secure, water-tight unidirectional flow control. Designed for versatile plumbing applications, this valve handles up to 200 PSI maximum working pressure and can be installed in both horizontal and vertical positions. The unit comes in used fair condition with minimal cosmetic wear

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