Industrial valves. Metallic butterfly valves Ingestion-build-134498 BS EN 4536-2 specifies the

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

Part 2: Guidance on task requirements

Load-bearing joints are covered by BS EN ISO 17660-1

except where it is evident in the form of radiated sound

ensure their safe use

Industrial valves. Metallic butterfly valves Ingestion-build-134498 BS EN 4536-2 specifies theThis 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