The flange connections are designed for the following allowable pressures: - outside diameter of pipe from 12,7 mm to 41,0 mm: 4,0 MPa (40 bar); - outside diameter of pipe from 42,4 mm to 104,0 mm: 1,6 MPa (16 bar); - outside diameter of pipe from 114,3 mm to 154,0 mm: 1,0 MPa (10 bar). If used with appropriate materials for the gasket, these pressures in MPa (bar) can be used with temperatures from -10 °C to +140 °C.