DC12V 72W 6A Micro Electric Reflux Water Pump Self Priming Diaphragm Pump Garden Lawn Irrigation Car Washing Reflow Type Pump~Only adapterPresentation:.This is Reflux pump.1.When the water outlet is completely blocked, the motor will not stop, but the return valve will open, and the water will circulate in the pump.2. The mounting feet are rubber instead of rigid plastic, which provides fairly good vibration isolation.3.Inlet must use filters,the power supply must form a complete set.Features:.The Reflux type pump can adjust the maximum pressure. When turn the pressure screw as clockwise,the maximum pressure becomes larger, but it can not be adjusted Unrestrainedly, otherwise it is easy to broken.When turn the pressure screw as counterclockwise, the maximum pressure becomes small. The factory has already adjusted well,no special circumstances, it is not recommended to adjust the pressure screw.Specification:.Name: Reflux pump.Connection size: 1/2 Male thread.Voltage: DC 12V(9-14.4V).Amps: 6A.Rated power: 72W.Pressure setting: 0.90MPA.The largest flow: 6L/Min.Adapter input: AC100-240V;50/60 Hz.Adapter output: 12V-6A.Vertical suction length: 1.5m.Pumping Head: 70m.Package content : 3 type for choose.Type 1:. 1Pc x Reflux pump.Type 2: .1Pc x Pump Adapter .Type 3: .1Pc x Reflux pump.1Pc x Pump Adapter .FAQ.Is the pump loud Will idling burn if don x27;t connect with water .The pump has a certain noise during working hours, about 70 decibels. The inlet pipe is made of flexible hose, and the pump is fixedly installed to reduce noise. No water idling for a long time will not damage the pump.But i.t is not a good idea let this pump runs dry for too long.Is there water in the pump that has been used.Each pump is tested at the factory, so there will be clean water in the water, so please put a red waterproof cap in time to prevent the pump from being too dry and not absorbing water for a long time.What motor is used in the pump.Full copper wire double-rolled DC motor (power line does not divide positive and negative) continuous service life of more than 1000 hours.Please Note:.1.The size is measured by hands, please allow minor error of measurement. Photo color might be a little different from the actual product due to color display of different monitors.Please read the product size on the details page carefully before purchasing. Thank you.