1. When the water outlet is partially blocked (such as the spray hole is too small) or completely blocked the motor will not stop but the return valve will open and the water will circulate in the pump. There is no too high requirement for the size of the water spray hole and the adaptability to the size of the water spray hole is strong.2. Scope of application: high-pressure spray equipment agricultural sprayer household car washer (water gun caliber between 1.5mm-1.8mm pressure)3. Adopt internal reflux technology high pressure long life and good quality.4. With self-priming function thermal protection stable operation continuous idling for a long time continuous load operation for a long time small size small current high pressure and low noise.5. Parameters:Pressure: 3-6kgPrinciple: Diaphragm pump (non-submersible pump)Voltage: 12V/24VCurrent: 3AFlow rate: 2-3.5L/min (L/min)Power: 36W