Application Areas: Automotive Thermal Management Systems; Primary Function: The air conditioning controller (ECU) sends pulse signals to the coil, driving the rotor assembly to rotate clockwise or counterclockwise. Through the lead screw and nut mechanism, the rotary motion of the rotor assembly is converted into axial linear movement of the valve needle, thereby adjusting the valve needle opening and regulating the flow area at the valve orifice to control refrigerant flow.

Technical Specifications:

1. Applicable Refrigerants: R134a / R1234yf;

2. Rated Capacity: 0.7 Ton to 5 Ton;

3. Ambient Temperature: -40°C to 120°C;

4. Operating Voltage: 12V / 24V;

5. Maximum Operating Pressure Differential: >2.5 MPa @ 9V;

6. External Leakage: < 1.5 g/y @ 2.0 MPa;

7. Internal Leakage: < 300 mL/min (@ 1.0 MPa AP air);

8. Communication Mode: Pulse Control;

9. Operating Mode: Unipolar / Bipolar;

10. Connector Type: Lead Wire / Blade Terminal;

11. Stepper Motor Pole Count: 20-pole / 24-pole;

12. Ingress Protection Rating: IP6K9K.