ITEM NAME:0.8Mpa DC 12V 5L/ Min Water High Pressure Diaphragm Pump Self Priming 60 W Nice.1   Diaphragm Water Self Priming Pump. 4, Corrosion resistance: the size of the diaphragm used, synthesized by a variety of imported materials. With oil resistance, heat resistance, acid resistance, alkali resistance, corrosion resistance, chemical resistance and other properties.