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Intervalve are internationally recognized as the butterfly valve specialist and offer valves in various configurations to suit the most varied and aggressive of applications. As well as the standard general purpose rubber lined valves (both wafer and lugged/tapped) Intervalve also offer valves with PTFE liners for the corrosive applications. Double flanged valves (both "U" design and BS 5155 double flanged short) up to 2400mm are also available. Intervalve offer wafer valves with a metal to metal seal for damper applications. High performance butterfly valves in various materials of construction are also available… firesafe to API 607 IV and ATEX approved if required. Intervalve butterfly valve come with all the relevant approvals including WRc, ATEX, Lloyds, CE/PED and can offer full certification where required. All valves up to 600mm are generally available ex stock or on short leadtimes.