... 16,JIS B2212/2213, BS 10 Table D, BS 10 Table ETop flange conform to: ISO 5211Face ... It will open and close automatically by the pressure of medium. When the medium is back- ... 1. Tightly sealed, without leakage under the water pressure testing.2. Economical, light weight, compact design-significantly ... install and maintain.Performance:Nominal Diameter: DN40-DN1200Nominal Pressure PN (MPa):1.0, 1.6, 2. ...