Plastics piping systems - Thermoplastics valves - Test methods for resistance to internal pressure and leaktightness; German version EN 917:1997— 6 стр.
Plastics piping systems for water supply - Unplasticized poly(vinyl chloride) (PVC-U) - Part 4: Valves and ancillary equipment; German version EN 1452-4:1999— 18 стр.
Plastic piping systems for warm water floor heating systems and radiator pipe connecting - Crosslinked polyethylene of medium density (PE-MDX)— 15 стр.
