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ISO 7121:2016PublishedSteel ball valves for general-purpose industrial applicationsISO 16135:2006PublishedIndustrial valves — Ball valves of thermoplastics materialsISO 17292:2015PublishedMetal ball valves for petroleum, petrochemical and allied industriesISO 18984:2025PublishedBall valves for thermoplastics piping systems for hot and cold water installations under pressure — Types, dimensions and requirementsISO 7121:2006WithdrawnSteel ball valves for general-purpose industrial applicationsISO 7121:1986WithdrawnFlanged steel ball valvesISO 17292:2004WithdrawnMetal ball valves for petroleum, petrochemical and allied industries