SIS SS 1272-1983 Fittings for piping - Check valves for PN 16 - Straight globe valves of cast iron with flanged ends. spring-loaded disk and sealing surfaces of Cu-alloy resistant to sea water
1986SIS SS 1272-1983 Fittings for piping - Check valves for PN 16 - Straight globe valves of cast iron with flanged ends. spring-loaded disk and sealing surfaces of Cu-alloy resistant to sea water