Swing Check valve swing flange check valve size : DN50--600mm pressure : PN1.0, 1.6 (MPa) medium : water , oil , water Swing check valve1. name : swing flange check valve2. size : DN50--600mm3. pressure : PN1.0, 1.6 (MPa)4. material : nodular cast iron , ash cast iron , stainless steel5. temperature : ≤300oC (water)6. medium : water , oil , water vapour7. payment : T/T L/C