
QRF
1. Compatible refrigerants: HFC-134a / HFC-1234yf;
2. Lubricants used: PAG / POE;
3. Operating ambient temperature: -40℃ to 120℃;
4. Operating principle: Controls refrigerant flow based on the temperature at the sensing bulb and the low-side pressure;
5. Adjustment mechanism: Adjusted via an internal adjustment screw in the valve body—turning clockwise increases superheat, while turning counterclockwise decreases it;
6. Charge type: Gas charge;
7. Connection type: Threaded connection;
8. Pressure balancing type: External balance / Internal balance;
9. Sensing method: External sensing;
10. Installation location: Evaporator assembly;
11. Installation orientation: Must not be installed facing downward; rotation up to 90° horizontally from the upward direction is permitted;
12. Detailed installation port dimensions are provided in the attachment.