The document describes a Zwischenflansch-Rückschlagventil SR 30.40 wafer type lift check valve, suitable for fluids, steam, and gas, complying with Fluidgroup 1 according to PED 97/23/EC. It features replaceable elastic seat rings and various optional opening pressures. The materials used are 1.4404 stainless steel, and a Nimonic spring should be used for operating temperatures exceeding 300°C.
