clean water pump 1.used for general fresh water transfer 2.agriculture spraying 3.dc water pump 4.long life, low noise clean water pumpDescriptionsSmall size, ... Functions Pressure pumps used in sprayers and spray fixtures. Water purification,filter machine,chemical metering and fluid supply. Food, ... transfer. Ex.pressure switch control pump's working or not, turn on switch,pump is at working;turn off ...