S series electronic expansion valves are mainly used in non-VRV commercial Invertersystems, as well as in residential units, to realize automatic adjustment of refrigerant flow rate 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 energy 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.

Features:
1.Compact design, light weight
2.High reliability
3.Energy saving
4.Applicable for heat pumps: bidirectional flow available

General spec:
1.Applicable refrigerant: R22, R134a,R404A, R407C, R410A 
2.Capacity: 1US.T~30US.T (R22 Nominal Capacity)
3.Applicable medium temperature: -30ºC ~ +70ºC (electrified rate below 50%)
4.Applicable ambient temperature: -30ºC ~ +60ºC (electrified rate below 50%)
5.Relative humidity: below 95% RH
6.Installation mode: Coil upwards, central axis of valve rotor within ±15°vertical to horizontal surface

Electrical Parameters:
1.Rated Voltage:DC12V±10%
2.Actuating mode: 4-phase 8-step permanent magnet stepping motor of direct-acting type
3.Excitation mode: 1 ~ 2 phase excitation, monopole actuation
4.Excitation rate: S01, S02 series: 30~90pps (the ending excitation mode maintains more than 0.1~1.0S)
S03 series: 30~40pps (the ending excitation mode maintains more than 0.1~1.0S)
5.Current of coil: Coil for S01 and S02 series: 260mA/phase(20ºC)
Coil for S03 series: 375mA/phase(20ºC)
6.Resistance of coil: Coil for S01 and S02 series: 46±3.7Ω/phase(20ºC)
Coil for S03 series: 32±3.7Ω/phase(20ºC)
7.Insulation grade of coil: E
 Note:
1) Nominal working conditions: Condensing temperature: 38ºC, vaporing temperature 5ºC,Supercooling temperature 0ºC,superheat temperature 0ºC.
2) When using other refrigerants, it needs a factor to adjust to the nominal capacity of R410A.(R134a-0.62, R22-0.83).
3) The leakage is based on valve without flow after being fully closed.
4) The nominal capacity is calculated as per 2/3 openness of valve of straight flow curve.
 
Welcome to VKIN

VKIN is one of the largest manufacturers of DC inverter Air conditiner,DC inverter Swimming Pool Heat Pumps,DC inverter Heat Pump Water Heaters in China.  VKIN's vision is "to be a young company forever, with the human wisdom to achieve the harmonious development of man and nature, TRUST ALWAYS."

VKIN has more than 100 national patents covering air conditioning, heat pump and heat pump technology, building a complete heat pump industry chain. In addition, VKIN has developed hardware and software for intelligent device control that allows customers to customize VKIN devices to their individual needs. VKIN provides comprehensive energy-saving overall solutions and products for medium and high-end users both at home and abroad, including air conditioners, constant temperature and humidity machines, swimming pool heat pumps, room heating and heat pumps, industrial heat pumps and the like.

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