Industrial N232B-6PP Brass Check Valve 3000 PSI

Circle Seal Controls 232B-6PP (N232B-6PP) Brass Check Valve is a brass-bodied inline backflow preventer rated 0–3000 psig, built for 3/4 in female NPT connections. It uses Viton seals and a 302 stainless steel spring to deliver quick opening and positive closing for bubble-tight sealing across its operating range. With a Cv of 10.3, a cracking pressure of 0.5–1 psig, and an operating temperature span of -20 to 400 °F, this valve supports reliable flow control in demanding hydraulic circuits. The 200-series device carries a proof pressure of 4500 psig and a burst rating of 7500 psig, while its compact dimensions—A 3.37 in, B 1.75 in, C 1 3/4 in, D 1.50 in, E 0.49 in—and a weight around 1.41 lb, enable straightforward inline installation. The valve is designed for zero leakage performance and fast response, with opening pressures as low as 0.1 psig under suitable configurations, making it suitable for preventing backflow while maintaining robust flow capacity in a range of fluids.