Features:          Minimal overall dimentions and weight          Absolute tighe sealing wear resistance,long life in most applications          Minimal required torque ,quiick 0-90 degree on-off operation          Easy field installation,convenient maintenance          Optional parts available,suitable for various medias Technical parameters:          DN50-DN300          Nominal pressure:PN<1.6Mpa          Working temperature :-25-80          Suitable medias:Fresh water,Sewage,Food,Oils Applications:         Wide application in         Water supply,fire equipment,sewage,draining,irragation,         evironmental protection,paper-making,metallurgy,potroleum         Power generation,chemical industry. Coupling:         Use low-density formale tubes in irrgation systems         Use formale tubes in water supply systems         Rubber tubes,soft tubes with keepers