female swing check valve Nominal pressure:PN1.6,2.5,4.0,6.4Mpa. Strength testing pressure:PT2.4,3.8,6.0 ... :PN1.6,2.5,4.0,6.4Mpa.2. Strength testing pressure:PT2.4,3.8,6.0,9.6Mpa.3 ... . Seat testing pressure (high pressire):1.8,2.8,4,4.7Mpa ... )R Acetic acid7. Applicable temperature:-40~180°C female swing check valve ( stainless steel ...