Plastics piping systems - Valves for polyethylen (PE) piping systems - Test method for leaktightness under and after bending applied to the operating mechanism
Plastics piping systems - Valves for polyethylen (PE) piping systems - Test method for leaktightness under and after bending applied to the operating mechanism
Plastics piping systems - Valves for polyethylen (PE) piping systems - Test method for leaktightness under and after bending applied to the operating mechanism