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prEN 1555-2
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes
prEN 1555-3
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings
prEN 1555-4
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves
prEN ISO 16486-4
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/DIS 16486-4:2024)
DIN EN 1555-4
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves; German version prEN 1555-4:2024
DIN EN 12201-4
Plastics piping systems for water supply, and for drains and sewers under pressure - Polyethylene (PE) - Part 4: Valves for water supply systems; German version EN 12201-4:2024
