Industrial valves. Metallic butterfly valves Ingestion-build-228203 the examination may be carried

the examination may be carried out at other stages during the welding process

intended for use on people by first responders

reliable and has a reasonable working life

innocuousness

so that all concerned can be sure of the program requirements

Industrial valves. Metallic butterfly valves Ingestion-build-228203 the examination may be carriedThis European Standard specifies requirements for butterfly valves having metallic bodies for use in flanged or butt welding piping systems and used for isolating, regulating or control applications. The PN and Class ranges are as follows: PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; Class 150; Class 300. The DN range is as follows: DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN