Electronic Expansion Valve R Series

Customized products 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.

Technical parameters

  • Features
    • 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
  • Electrical Parameters
    • Rated voltage: DC12V (±10%), rectangular wave
    • Actuating mode: 4-phase 8-step permanent magnet stepping motor of direct-operated type
    • Excitation mode: 1-2 phase excitation, monopole actuation
    • Excitation rate:30~90PPS (the ending excitation mode maintains 0.1~1.0s)
    • Current of coil:260mA/phase(20°C)
    • Resistance of coil:46±3.7?/phase(20°C)
    • Insulation grade of coil: E
  • Dimensions

    Electronic Expansion Valve R Series . Flow characteristic


    Port mm Code of the Coil Series Dimensions (mm)
    A B C D E F G H M N
    1.5 M10 38.5 26.4 25.6 700 600 92 50 47 6.35 17.3
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