High-Efficiency Cleaning Power: Our pressure washer pump delivers up to 4200 PSI of powerful water pressure with a maximum flow rate of 4.2 GPM, ensuring fast completion of tasks ranging from household cleaning to light industrial jobs. (Recommended working pressure: 3400 PSI for typical residential and light industrial cleaning and to extend pump life.) Durable, Long-Lasting Design: Utilizing advanced anodizing technology, the parts washer pumps surface forms a hard protective layer, significantly enhancing corrosion resistance and durability. Built to last, this pump provides reliable performance for up to 500 hours of continuous use. Equipped with Pressure Regulator: Adjust pressure output precisely based on engine operation to achieve optimal performance for any cleaning task. Easily reduce pressure during short pauses to switch the engine to idle mode, reducing noise and extending equipment life for a more comfortable operating experience