DIN EN ISO 16486-4 : 2022 Title: Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO 16486-4:2022) Year: 2022 Publisher: DIN Media GmbH Availability: Within 1-2 working days