Hayward VALVE CHECK .5LB 1/4 NPT X 3/8

The Hayward Valve Check .5LB 1/4 NPT x 3/8 is a compact, low‑cracking‑pressure check valve designed to maintain one‑directional flow in small‑diameter chemical feed and auxiliary plumbing lines. Its 1/4‑inch NPT inlet provides a secure threaded connection, while the 3/8‑inch outlet accommodates compatible tubing or fittings, making it versatile for tight equipment pads or dosing setups. The internal mechanism is engineered to open at roughly half a pound of pressure, allowing reliable operation even in gentle or intermittent flow conditions while preventing backflow that could damage pumps or contaminate chemical reservoirs. Built from materials suited for pool and spa environments, it offers strong resistance to corrosion and chemical exposure. Given its size and construction, the estimated weight typically falls in the range of 0.1 to 0.2 pounds, keeping it lightweight and easy to integrate into small plumbing assemblies.