Electronic Expansion Valve R Series

Electronic Expansion Valve R Series

ref. Electronic Expansion Valve R Series

R series electronic expansion valves are mainly used in air conditioning systems with variable refrigerant flow to realize automatic adjustment of refrigerant flow rate and make the air conditioning system work under the best working condition for the purpose of fast cooling, precise temperature control and power saving. These valves can also be used for other controls. These valves are reversible which can automatically control the flow of refrigerant in either heating or cooling mode.


  • Applicable for oil-free cooling system
  • Smaller installation space: low height, small volume and light weight
  • Wider applicability for eliminating system refrigerant noise: with optimized flow path design
  • Outer Encapsulation coil structure: better corrosion resistance

General specifications

  • Applicable refrigerant: R744(CO2)
  • Applicable medium temperature: -30°C ~ 80°C (electrified rate below 40%)
  • Applicable ambient temperature: -30°C ~ 60°C (electrified rate below 40%)
  • Relative humidity: below 95% RH
  • Installation mode: Coil upwards, central axis of valve rotor within ±15°vertical to horizontal surface.
  • Direction of Medium: one direction from horizontal tube to Vertical tube
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