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What does the unloader do on a pressure washer?
The unloader diverts the flow of water from the outlet side of the pump back to the inlet side, causing water to flow in a loop back to the pump under virtually no pressure rather than to the nozzle under operating pressure. Flow may be directed back to the pump inlet or to a float tank or other type of reservoir.
Can you adjust the PSI on a pressure washer?
Can I adjust the PSI on my pressure washer? You simply turn the dial to increase or decrease the pressure. Others have a regulator on the spray wand, similar to the Vario wand on our electric power washer. You can also change out the nozzle tips which alter the impact pressure when spraying.
How does the unloader valve on a pressure washer work?
When the trigger gun’s valve is shut off by releasing the trigger, the pressure on the unloader valve increases, causing it to unload or recirculate back to the reservoir. It works by using a simple valve and a mounted spring mechanism that opens when the correct amount of pressure is applied.
What happens when you disengage a pressure washer?
In a pressure washer, water is pumped in faster than it’s let out. This creates the high-pressure water we use to blast surfaces clean. However, if the pressure washer gun is disengaged, and there is no unloader valve to redirect the pressurized water, the pressure would continue to build.
What does an unloader do on a compressor?
Load/unload (sometimes called load / no-load or dual control) requires storage receiver volume, and operates the compressor at full capacity until the unload pressure (cut-out) setpoint is reached. Once a lower load (cut-in) pressure is reached, the compressor returns to full capacity, and the cycle repeats.
What does a pressure washer spray gun do?
This simply means they help the water pass through the pressure system so that it comes out from the spray gun. When you are not spraying water, it redirects the water to a safe pressure outlet by moving it back towards the inlet side.