Product Features: Permits flow in one direction and closes automatically if the flow reverses Strictly conforming to International Standards Available in rubber seating & metal seating Wafer type sleek design to allow maximum flow Test Pressure (Hydraulic) : Body : 1.5 MPa Seat : 1.0 MPa 1 Bar = 0.1 MPa = 1.019 Kgcm² = 14.50 PSI