Cat Pressure Washer Pump Unloader Valve

An unloader is a pressure control valve that sets and maintains system pressure.

Cat pressure washer pump unloader valve.

118672 cat pump shaft protector 3cp 5cp 5fr pumps 14 95 14 95 add to cart. 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. 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. When the shut off gun is opened back up the system will return to operating pressure.

It offers additional protection to the pump and is recommended in larger capacity and higher pressure systems. 121391 cat ceramic plunger for 5cp6190 pump 59 95 59 95 add to cart. 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. Cat pumps does not assume any liability or responsibility.

For 50 years cat pumps has offered the most dependable positive displacement high pressure triplex pumps available. 12393 cat o ring bearing case 4 95 4 95 add to cart. A pressure washer unloader valve diverts the water flow through the bypass when the trigger on the gun is depressed. Cat pumps 7500s brass pressure regulating unloader 2000 psi 6 gpm 3 8 npt.

The unloader valve can also be used for adjusting the pressure of your machine. Regulators and unloaders each have their own benefits. This pressure washer was one one of the machines that sat for 8 years. Failure to install such relief devices could result in personal injury or damage to the pump or to system components.

It is typically set approximately 200 psi above the system pressure set on the primary valve. Designed and built to the highest quality standards customers count on cat pumps products to keep their equipment running. This is a secondary protection device that should be installed in addition to the primary pressure regulator or unloader. I finally got around to working on it.

The unloader valve is designed to respond to an increase in pressure or a change in water flow.