WKM 4″ 150 RF Flanged Ball Valve 316 Stainless Steel

Engineered for demanding industrial service, this WKM 4″ Class 150 RF flanged check valve delivers reliable backflow prevention in critical pipeline systems, constructed from 316 stainless steel (31600) for superior corrosion resistance and long-term durability in oil & gas, petrochemical, and process environments. Built to API standards, it ensures dependable performance and compatibility with industry setups, while the robust raised-face flanged design provides secure installation and leak-resistant operation. The valve is marked “4 150 RF C-3 31600 TYPE”, indicating a 4-inch size, Class 150 pressure rating, RF flanged ends, and C-3 configuration (likely trim/internal design—buyer should verify for specific applications). This unit is a cost-effective, high-quality solution for maintenance, replacement, or system upgrades where proven industrial reliability is essential.