Synthetic material pipeline and the production method for this synthetic material pipeline
US2011198526A1
Ball valve made of plastic
DE102007024624A1
Plastic ball valve has a plastic housing around a ball inside two linked plastic rings
DE102007024625A1
Plastics material ball-valve, has valve ball sealed relative to housing via annular sealing elements
DE102007024623A1
Plastic valve ball for spherical valve ball, comprises composite construction unit, which has carrying element filled with cavity and surface layer, which surrounds carrying element
