Easy structures and short dimensions ( *according to DIN EN 558-1, row 49) are the remarkable features of disco check valves. They offer an optimum solution in case of bigger nominal widths and there, where connection fl ange mountings are required or more favorable. The disco check valves type 930 / 932 are suitable for the industrial use in pipe systems for the transport of liquid or gaseous materials as well as in sys- tems where much higher demands are made on the material. These disco check valves may have any mounting position. They are opened by means of the medium pressure and closed again by means of a spring, prior to the creation of a backflow. Tightness: The disco check valve closes by himself due to the spring without a difference of pressure. Max. working temperature in relation to seals: NBR -10 bis/to +90°C EPDM -10 bis/to +120°C FPM (Viton) -10 bis/to +150°C PTFE -10 bis/to +200°C metallisch -10 bis/to +300°C Pressure loss diagram: Measurements of fluid flow according to DIN EN 60534-2-3 The values in the diagram refer to water at 20°C.
also available in carbon steel