The Mi-T-M 8-0493 Unloader Valve W/ Detergent Injector regulates water pressure in a compatible pressure washer and allows detergent to be drawn into the water stream for cleaning tasks. It helps manage pressure by redirecting excess water flow when the spray gun is released, supporting proper pressure washer operation. This replacement component combines pressure control and detergen... https://www.wholetoolbox.com/mi-t-m-8-0493-unloader-valve-w-detergent-injector/8-0493.html