Kärcher 8.712-244.0 AP-500 Flow Switch

Kärcher 8.712-244.0 AP-500 Flow Switch

When water flow (GPM) is sensed by the flow switch, it allows the burner to come on, heating the water. This water flow is typically activated by pulling the trigger on the gun. When the trigger is released, the water flow stops, deactivating the flow switch, and turning the burner off.