OEM AR Power Washer Pump Unloader Valve with Pressure Switch VRT3-310PS6, VRT3310PS6 Specs - Max Pressure: 4500 PSI. Max Flow: 10.5 GPM. Max Temperature: 194° F. Inlet Types: 3/8" Female NPT. Outlet Type: 3/8" Female NPT. By-Pass Types: 3/8" Female NPT. Spring Color: Black. Knob: Yes (NOT adjustable). Refer to images 2 & 3 for more information Includes - (1) Unloader Valve with Pressure Switch; comes as shown in the first image Fits/For Power Pressure Washer Pumps that fit By-Pass Types 3/8" Female NPT Pressure switch designed for balancing pressure washers hot water systems. The switch activates to allow water to flow through the heating coil OEM AR Power Washer Pump Unloader Valve with Pressure Switch VRT3-310PS6, VRT3310PS6. 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.