Industrial valves. Metallic butterfly valves Ingestion-build-134498 Part 2: Guidance on task

Part 2: Guidance on task requirements

BS EN 4536-2  specifies the characteristics of plain bushes in corrosion resisting steel with self-lubricating liner

ensure their safe use

BS EN 755-3:2008 Aluminium and aluminium alloys

Volumetric efficiency

Industrial valves. Metallic butterfly valves Ingestion-build-134498 Part 2: Guidance on taskThis 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