Thermostatic Expansion Valve Series RFKH

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Thermostatic Expansion Valve Series RFKH

ref. Thermostatic Expansion Valve Series RFKH

RFKH series thermostatic expansion valves are used to adjust mass flow of refrigerant into the evaporator while controlling the refrigerant´s superheat at the outlet of the evaporator. They can be used for various refrigerants under all working conditions. Typical applications are refrigeration systems like freezers, ice makers, dehumidifiers as well as air conditioners and heat pumps at various evaporation temperature ranges.

Air conditioning Commercial Refrigeration Heat Pump


  • Stainless steel capillary and sensing bulb
  • Exchangeable valve orifice, easy to stock holding, convenient for capacity match and repair
  • Thermal bulb utilizes cross charge technology, providing consistent superheat degree over the whole evaporation temperature range
  • Valves with MOP function can be provided to assure reliable compressor operation
  • Applicable in a wide evaporation temperature range
  • Reliable and consistent performance of superheat control

General specifications

  • Applicable for all common HCFC and HFC refrigerants such as: R22, R407C, R404A, R507, R134a, R404A, R410A, R407F ...
  • Ambient temperature min./max.:-40ºC / +70ºC
  • Medium temperature TS min./max.: -40°C/+70°C  
  • Max. operating pressure PS: 4.6 MPa  (46 bar)
  • Installation position:
    • Preferably valve head upwards
    • Flow direction from inlet A to outlet B
  • Certifications: UL/CSA and PED declaration
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