BS EN ISO 17292:2004 pdf free.Metal Ball Valves For The Petroleum, Petrochemical And Allied Industries. BS EN ISO 17292 specifies the requirements for a series of metal ball valves suitable for petroleum, petrochemical, natural gas plants, and related industrial applications. It covers valves of the nominal sizes DN 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 150,...