Cat Pressure Washer Pump Unloader Valve

007860 cat pump modular unloader valve built in bypass chemical injector 66dx 129 95 129 95 add to cart.

Cat pressure washer pump unloader valve.

An unloader contains a check valve that traps pressure between the closed downstream device shut off gun and the unloader causing an internal piston to open which allows the pump to unload at low pressure. Cat pumps 7500s brass pressure regulating unloader 2000 psi 6 gpm 3 8 npt. This is a secondary protection device that should be installed in addition to the primary pressure regulator or unloader. 121391 cat ceramic plunger for 5cp6190 pump 59 95 59 95 add to cart.

The unloader valve is designed to respond to an increase in pressure or a change in water flow. 12393 cat o ring bearing case 4 95 4 95 add to cart. A horizontal internal piston shifts based on downstream pressure to allow flow to either travel to the wand or back to the source through the by pass port. A pressure washer unloader valve diverts the water flow through the bypass when the trigger on the gun is depressed.

All systems require both a primary pressure regulating device i e regulator unloader and a secondary pressure safety relief device i e pop off valve safety valve. The unloader valve can also be used for adjusting the pressure of your machine. When the shut off gun is opened back up the system will return to operating pressure. An unloader is a pressure control valve that sets and maintains system pressure.

Cat pumps does not assume any liability or responsibility. Regulators and unloaders each have their own benefits. It is typically set approximately 200 psi above the system pressure set on the primary valve. It offers additional protection to the pump and is recommended in larger capacity and higher pressure systems.

I finally got around to working on it. This pressure washer was one one of the machines that sat for 8 years. A worn or stuck piston can cause excess bypass flow and low system pressure. 118672 cat pump shaft protector 3cp 5cp 5fr pumps 14 95 14 95 add to cart.

For 50 years cat pumps has offered the most dependable positive displacement high pressure triplex pumps available.