DSF 4-way Reversing Valve is the component to provide heating and cooling from the system to the conditioned space by reversing the flowing direction of refrigerant, which is used at room air conditioners, packaged and central air conditioners. Our reversing valves are designed for heat-pump systems with the capacity from 0.75PH to 12PH; They are suitable for most refrigerants such as R22. R407C, and R410A.
Basic parameter
1. Exteral leakage test pressure: 3.0 Mpa
2. Max. Operating pressure: 3.0 Mpa
3. Water test pressure: With water pressure 4.4Mpa
4. Burst pressure: 14.4Mpa
5. Ambient Temperature: Electricity on -20º C~+55º C
6. Relative Humidity: Less than95%RH
7. Fluid permission temperature: -20º C~+120º C
8. Min. Operating Voltage: Under the different press of 2.25Mpa
9. Durability: >20.000times(Grease is allowed)
10. Coil Max. Temperature: +120º C
11. Noise: Not more than 45dB(A)
Coil's electric parameter
1. Rated voltage: AC220V 50/60Hz
2. Insulation resistance: ≥ 100MΩ
3. Di-electricity: Under 1500 voltage for the minute of 1800 voltage for one second. No break down of flash over.
4. Power: 5~7W
5. Insulation class: B class
6. Coil temperature rise: Not more than 80K.
| Type | Port Size
| Connection
(MM) | O. P. D (Mpa) | Internal Leakage (ml/min)
P=1.0Mpa at 70 | Power
(HP) |
| D | E. S. C | Min | Max |
| DSF-4U | 8 | 8.1 | 9.6 | 0.25 | 2.5 | < 1000 | 0.75-1.5 |
| DSF-9U | 11 | 9.6 | 12.8 | 0.34 | 2.25 | < 1500 | 2-3 |
| DSF-11 | 11.5 | 12.8 | 16 | 0.34 | 2.25 | < 2000 | 2.5-4 |
| DSF-11U | 11.5 | 12.8 | 16 | 0.34 | 2.25 | < 2000 | 2.5-4 |
| DSF-20 | 13 | 12.8 | 19.2 | 0.34 | 2.25 | < 4000 | 4-8 |
| DSF-20U | 13 | 12.8 | 19.2 | 0.34 | 2.25 | < 4000 | 4-8 |
| DSF-34 | 20 | 19.05 | 22.2 | 0.34 | 2.25 | < 6000 | 7.5-12 |
| DSF-35 | 23 | 7/8 | 11/8 | 0.340.34 | 2.76 | < 6000 | 5-15 |
Ningbo Sanheng Refrigeration Control Co., Ltd. is located at Xikou Industrial Zone, Ningbo City, Zhejiang Province. It is specializes in developing and manufacturing of refrigeration unit, refrigerated air dryer, Refrigeration Parts, Air Conditioner Parts and Auto A/C Parts, like refrigeration solenoid valves, thermal expansion valves, manifold gauge set, filter drier, ball valve, many kinds of expansion valve for Auto A/C and so on.
After decades of development, we have a profeeional refrigeration technology team with wealth of practical experience, self-developed special-purpose welding lines and unique testing equipment and advanced injection technologies. Meanwhile, we focus on improving the quality and stability of product, keep on investing in the introduction of various high-tech equipment, now we have a complete set of production equipment, such as high-precision CNC lathes, Automated assembly lines and so on. They help us to strictly control product quality and stability. Our company has passed ISO9001-2000 certificate and CE certificate.
Sanheng Company relies on the "Sanheng"spirit, i. e. "Quality Eternal, Service Eternal, and Prestige Eternal". We believe that we will make great contribution to refrigeration industry.
