1.The pump is specially designed for biogas. 2.It is ... voltage 220V/50Hz 4.Rated Power 20W Features of biogas pump:1, uses the high quality rotation AC motor drive ... .3, can be used as vacuum pumps and compressors dual use, wide application.4, the casing is made of ... , electrostatic spraying, uniform color, stronger adhesion.Biogas booster pump designed specifically for biogas,It is widely used in various ...