... 50Hz 4.Rated Power 20W Features of household biogas pump :1, uses the high quality rotation AC motor ... , higher pressure.2, no oil lubrication design, compressed air is more pure.3, can be used as ... phosphating, electrostatic spraying, uniform color, stronger adhesion.Biogas booster pump designed specifically for biogas,It is widely used in ... normal use of biogas users. household biogas booster pump