Fits almost all Airlessco units such as but not limited to: Airlessco 400

5 ⁄16 in

making it ideal for continuous

Industrial strength construction for demanding usage

MTM Hydro 1/4" Big Pressure Switch - 360 PSI 1/2" x 50' Fits almost all Airlessco unitsMTM Hydro's Italian Pressure Switches are used in a variety of methods to turn other items in a pressure washing system on or off. Typically, this switch is used for burner control and is activated by a pressure threshold within the unloader where the switch is mounted. As you disengage your gun by releasing the trigger the pressure suddenly spikes within the switch. This increase in pressure will turn the burner off so that you are not constantly