3, Cleaning of swimming pool, hotel, hotel kitchens, market.
4, Do great help to the cleaning of exterior walls, doors, windows, floors, toilet, and somewhere corner hard-to-wash to wash.
This is our two national patent products
QL-390 high pressure washer drives the two-cylinder plunger pump directly, and the plungers do reciprocating motion: the plunger draws back, the water outlet valve closes, and the water inlet valve is open, a vacuum circumstance is formed, then the water is drawn into the cylinder. The plunger goes forward, the outlet valve is open and the inlet valve is closed, high pressure water sprays out from the nozzle.
The washer pump has a pressure relief valve, when the gun is off, micro switch works and makes motor stop working. When the gun is on, micro switch makes motor goes on working, and this function can save water and electricity.