![]() ![]() ![]() If you do, the injector is working, and that means there is something after the injector causing back pressure and stopping it from working. ![]() With the pressure washer running and the water flowing through the injector, place your finger over the inlet barb hole. The adjustable injector adds one more moving part-the needle valve or screw. The downstream chemical injector, also known as the venturi injector, is very simple in design and operation, with only two moving parts on the fixed injector-the check valve ball and the spring. In this article we will be talking about downstream chemical injectors. There are two main types of chemical delivery systems, upstream and downstream. With that admission, let’s transition into some less embarrassing and more helpful injector troubleshooting advice! ![]() Because the title of this article isn’t “Green Bubble Gunk-Results of Leaving Acid in Your Brass Injector,” let me note here that I know from personal experience trouble happens when you don’t take care of your equipment. However, we all have those days where the motivation to end the workday is stronger than the desire to keep at it. The thing about troubleshooting is that one should try to avoid the need to fix something in the first place. ![]()
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