... " *DN: DN15, DN20, DN25, DN32, DN40, DN50 Brass Spring Check Valve 1. Nominal pressure: 1.6 MPa2. Actuating Medium: Water, non-corrosive ... liquid, gas3. Working pressure: 0.01-1.6MPa for water or oil; max working ... pressure for gas: 0.8MPa4. Operating temperature: 0° C ≤ t ≤ 90 ° ...