1.Reflux valve design. The motor still won't stop running even the water outlet is blocked but the reflux valve will be opened and water circulates in the pump in that situation. This type of product can be applied to occasions that have low level of demand for energy conservation.
2.Pressure switch design: It will be automatically cut off the power supply and the motor stops running when the water outlet is turned off. Once the water outlet is turned on, the motor starts running again. This type of product can be applied to occasions, which have demand for energy conservation and frequent switching, such as machine washing, feeding water to a solar energy system, and remote automatic controlling system of conveying water and suspending water supply, etc.