Power (max): 70W. [SELF PRIMING SPRAYER PUMP]: It designs with the self-priming function to prevent liquid from back flow in the pump. 1/2 x Diaphragm Water Self Priming Pump. [DIAPHRAGM PUMP WITH CUT-OFF PRESSURE]: This is a diaphragm pump that automatically cuts off the pressure, it with a built-in pressure switch.
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