Sanhua El Expansion

Electronic Valve DPF-T/S

Spare parts - Electronic Expansion Valve


T/S series electronic expansion valves are designed for use in air conditioning and refrigeration systems or in 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.


  • Applicable for oil -free system (T series)
  • Smaller installati on space : low height , small volume , light weight
  • Optimized flow path design for noise reduction
  • Fast operati on, energy saving
  • Applica ble for reversi ble systems like heat pumps : bidirectional flow


  • Applicable for all common HCFC and HFC refrigerants such as: R22, R134a, R404A, R407C, R410A, R507A …
  • Cooling capacity: 3,5 to 105 kW (R22 nominal capacity)
  • 500 steps (full stroke); 32 ± 20 opening steps
  • Medium temperature TS min./max.: -30°C /+70°C (duty cycle rate below 50%)
  • Ambient temperature min./max.: -30°C / +60°C (duty cycle rate below 50%)
  • Relative humidity: 0 to 95% RH
  • Installation position:
    • Coil installed in the upwards position, valve rotor central axis within ±15° versus vertical axis
    • Inlet connection preferably sidewise, outlet preferably downwards
  • Certifications: UL/CSA and declaration according to LVD or PED


  • Rated voltage: 12V DC(± 10%), rectangular wave
  • Actuating mode: 4-phase 8-step permanent magnet stepping motor of direct-acting type
  • Excitation mode: 1 ~ 2 phase excitation, monopole actuation
  • Excitation rate:
    • Seat Ø 1,3 to 3,2 mm: 30 to 90pps
    • Seat Ø 4,0 to 6,5 mm: 30 to 40pps
  • Activation of self-holding mechanism: Maintain excitation in stop position min. 0,1~1,0 sec
  • Min. motion time from completely open to completely closed:
    • Seat Ø 1,3 to 3,2 mm: 6s @ 90pps
    • Seat Ø 4,0 to 6,5 mm: 13s @ 40pps
  • Coil current:
    • Seat Ø 1,3 to 3,2 mm: 260mA/phase (20°C)
    • Seat Ø 4,0 to 6,5 mm: 375mA/phase (20°C)
  • Coil resistance:
    • Seat Ø 1,3 to 3,2 mm: 46 ± 3.7 Ω/phase (20°C)
    • Seat Ø 4,0 to 6,5 mm: 32 ± 3.2 Ω/phase (20°C)
  • Insulation class of coil: E
  • Protection class: IP 66


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