... pump are operated with compressed air.Depamu's diaphragm pumps work as well as those imported from Germany or USA, suitable for pumping ... liquids, which are highly viscous, volatile, corrosive or toxic, as well as colloids. The pump body is made of aluminum alloys, ... steel. The diaphragm is made of high quality rubber such as Nitrile rubber, chloronorgutta rubber, fluoroine rubber. The diaphragm pumps ...