1.The pump is specially designed for biogas. 2.It is ... 220V/50Hz 4.Rated Power 20W Features of household biogas pump :1, uses the high quality rotation AC motor drive, ... surface phosphating, electrostatic spraying, uniform color, stronger adhesion.Biogas booster pump designed specifically for biogas,It is widely used in various ... meet the normal use of biogas users. household biogas booster pump