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Overview ISO 4437-4:2022 - Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves - specifies the characteristics and test parameters for polyethylene (PE) valve…
1 Scope This part of ISO 4437 specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels. It also specifies the test parameters…