Main Function:
Its core function is to control the switching of fuel supply between the vehicle’s main fuel tank and auxiliary fuel tank. For heavy-duty trucks equipped with dual fuel tanks (e.g., Howo, Sinotruk SITRAK), when the main tank’s fuel level is low, an electronic control signal activates this valve to switch the fuel supply line to the auxiliary tank, ensuring continuous engine operation and extended driving range.

Structure and Features:

• Electric Control: The thicker part on the left is the electric actuator, while the black valve body on the right features four ports with red sealing rings. These ports connect to the main tank line, auxiliary tank line, and engine fuel inlet line.

• Wiring Connector: The black wire extending from the side connects to the vehicle’s electrical system, receiving commands from the ECU to control valve opening and closing.

Compatible Models:
Primarily applicable to Sinotruk Howo series (e.g., Howo A7, Howo T7H) and Sinotruk SITRAK heavy-duty trucks.