The 4000 PSI unloader valve is a required add-on for any jetting accessories that have a dead stop, such as a gun where you would like water to complete stop as soon as you release the trigger or handle. The unloader valve is necessary to keep the pump from dead-heading, which can cause severe damage to the pump.
Unloader valves are also required when customers want to add a water selector to their mini reel in order to allow them to immediately turn on and off the water at the mini reel. Unloader valves can be used with single or multiple gun/reel applications. The unloader assembly includes the unloader valve, two hoses, clamps, and fittings required to connect to your 4018 machine. The unloader valve alone is simply the high pressure relief valve on its own. The assembly is necessary if you don't currently have an unloader on your machine, whereas the valve only is to replace an existing unloader valve.
Max Flow: 21 GPM / Min Flow: 1" GPM
Max Pressure: 4000 PSI
