OEM Annovi Reverberi Adjustable Soap Injector, MVR42021, 42021 Pressure Washer Pump Specs - Orifice Size: 2.1 mm. Maximum Pressure: 4500 PSI. Maximum Flow: 8 GPM. Maximum Temperature: 200° F. Inlet Type: 3/8" Male NPT. Outlet Type: 3/8" Female NPT. Adjustable. Refer to images 2 and 3 for more information Includes - (1) Adjustable Chemical/Soap Injector; comes as shown in the first image This chemical injector is designed for down stream insertion of chemical products into the pump's pressure stream Chemical injectors only work in a low pressure mode. If you're using a quick-connect nozzle when the soap nozzle / no nozzle is in place, when using the variable nozzle it has to be in the low pressure position. If the pump is not in a low pressure mode, the chemical injector will NOT work OEM Annovi Reverberi Adjustable Soap Injector, MVR42021, 42021 Pressure Washer Pump. Please review all product information to ensure that this product is compatible with your unit. Our staff constantly strives to provide clear and concise product information. We understand that sometimes it can be difficult to confirm product compatibility. It is your responsibility to confirm this is the correct product you need; therefore, we encourage all customers to fully review the information provided in this listing prior to purchase. Nothing is worse than having to return a product, trust us...we get it. Let's work together to avoid this! If you are unsure as to whether or not this is the correct product for your unit, please ask. If you seek assistance we will need as much of the following information as possible, if applicable, to help you find the product you are looking for: ▪ Model and/or Sub-model ▪ Spec and/or Type Number ▪ Code and/or Serial Number ▪ Year ▪ Engine Horsepower. Our knowledgeable product specialists are always willing to help you verify product fitment. Stay rugged, my friend.