Forney 75196 Pressure Washer Accessory Kit - Detergent Injector with Heavy Duty Hose for Car Washing, House Cleaning & Outdoor Equipment Maintenance

I am extremely impressed with this tool. I had been looking for a pressure washer that operated above 3,500 psi and could inject a biodegradable soap into the solution at that high pressure. I only could find pressure washers that had the "soap" feature that merely sprays at a very low pressure. I received it and went to a pressure washer store to try it and it did! People say the instructions are not clear but its highly intuitive. I will explain for those that are thinking of buying it.So the big circumference regulating valve can be lifter with pure finger strength. So the first step is to connect the hose to the accessory and then to the machine. Once you open the water flow (with the pressure washer off) the valve will rise due to the water flow. Turn on the pressure washer and it operate it normally. Once you are thinking of using detergent. Lighlty push down the valve and spin it so that it locks with the safety lock downstream. This will reduce the water flow so that it doesnt suck a lot of detergent! then if you want to reduce the injection adjust the screw inside the big valve. See! very easy!This review is just as I received the tool, I will be using it often and will be testing its durability.