4" Non-Return Valve / Check Valve – Flanged 300# (LCNG/138)

Heavy-duty check valve with 300# flanged ends, designed to prevent reverse flow in high-pressure pipelines. Commonly used in LCNG applications, oil & gas, water, steam, and industrial process lines. Built with a swing-type or lift-type disc, offering durable, leak-proof, and maintenance-friendly performance in critical flow systems.