Electronic Expansion Valve VPF

Electronic Expansion Valve VPF

VPF series Electronic Expansion Valves are designed for commercial and industrial applications. Typical VPF applications are air conditioning and refrigeration systems or heat pumps. The valve controls the automatic adjustment of refrigerant flow rate and makes the system work under optimized conditions for the purpose of fast cooling or heating, precise temperature control and energy saving. The valve can also be used e.g. for suction line pressure controls. These valves provide bidirectional operation to control the refrigerant flow rate in heating or cooling mode.

Technical parameters

  • Features
    • Energy saving thanks to veryprecise capacity control: Up to 3800 steps
    • Internal Tightness like a solenoid valve
    • Optimized flow path design for noise reduction
    • Applicable for reversible systems like heat pumps: bidirectional flow
    • Corrosion resistant design, long lifetime, high realiability
    • Compact design
    • Models with integrated sight glass are available
  • General specification
    • Applicable for all common HFC, HFO refrigerants such as: R134a, R404A, R407A/F, R407C, R410A, R448A, R449A, R450A, R452A, R513A, R507A 1)
    • Cooling capacity: 54 to 1495 kW (R134a nominal capacity)
    • Up to 3800 steps (full stroke); Valve starts opening with
        - VPF12.5, VPF25: 110 steps
        - VPH50...VPF400: 165 steps
    • Medium temperature TS min./max.: -40°C / +90°C
    • Ambient temperature min./max.: -40°C / +60°C
    • Relative humidity: : 0 to 100% RH
    • Installation position:
        - Major flow direction from connection A to B
        - Installation in horizontal and vertical pipes possible
        - Installation position in horizontal lines with stepper motor preferably upwards
    • Certifications: EAC and PED Declaration


    • 1) Flammable refrigerants like R32, R290, R1234ze(E), R1234yf on request
  • Electrical Parameters
    • Rated voltage: 12V DC, rectangular wave
    • Actuating mode: 2-phase 4-step permanent magnet stepping motor
    • Excitation mode: 2 phase excitation, bi-pole actuation
    • Excitation rate:
      • - 150 pps (Maximum for voltage drive)
      • - 300 pps (Maximum for current drive)
    • Motion time from completely open to completely closed (voltage drive/current drive):
      • - VPF12.5…VPF50: 17,3s / 8,7s
      • - VPF100: 23,3s / 11,7s
      • - VPF150…VPF400: 25,3s / 12,7s
    • Nominal motor current*:
      • - Voltage drive: 124mA RMS per phase in control operation
      • - Current drive: 100mA RMS per phase in control operation
    • Peak motor current*:
      • - Voltage drive: 238mA RMS per phase in control operation
      • - Current drive: 140mA RMS per phase in control operation
    • Coil resistance: 52 ± 5,2Ω/coil (20°C)
    • Insulation class of coil: E
    • Protection class: IP 67
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