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Refrigeration Fittings
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![<!--<$[标题]>begin-->CO2 Electronic Expansion Valve<!--<$[标题]>end-->](/picture/0/7168003d28074c2ba0386edd2ddbcea8.png)
CO2 electronic expansion valves are widely used in transcritical R744 (CO2) refrigeration systems to realize automatic adjustment of refrigerant flow rate and improve system’s operation performance for the purpose of fast cooling and heating, precise temperature control and power saving.
FEATURES
• Compact and lightweight design, small installation space
• Noise reduction design ensures low operation noise
• Outer encapsulated coil ensures better corrosion resistance
• High pressure bearing ensures reliable operation under the maximum working pressure of 15.0MPa
OPERATION CONDITIONS
• Applicable Refrigerants：R744（CO2）
• Maximum Working Pressure：15MPa
• Medium Temperature： -30℃~ +70℃
• Ambient Temperature：-30℃~ +60℃
• Relative Humidity: below 95%
TECHNICAL PARAMETERS
Item | Parameter |
MOPD | 10MPa |
Internal leakage | <600mL/min (all valves are shut of except for flow valve) |
Flow direction | Uni-flow(A->B) |
Power supply | DC12V±10%, rectangular wave |
Actuation mode | 4-phase 8-step permanent magnetic stepper motor |
Excitation mode | 1 to 2 phase excitation |
Full open pulse | 500 |
opening pulse | 32±20(all valves are shut of except for flow valve) |
Excitation rate | 30～90PPS |
Insulation class | E |
TECHNICAL PARAMETERS
Model | Port （mm） | Nominal capacity （kW） |
DPF1.0E | 1.0 | 5.0 |
DPF1.2E | 1.2 | 6.9 |
DPF1.4E | 1.4 | 9.0 |
DPF1.8E | 1.8 | 15.5 |
DPF2.0E | 2.0 | 20.2 |
(Working conditions: the valve is fully open, the outlet temperature of the gas cooler is 22℃, the working pressure is 10MPa,the evaporating temperature is 6℃ and the superheat degree is 0℃ )
Technical Parameters of Valve Body
Model | Actuation | Maxiphen working Pressure | MOPD[MPa] | Order Number |
[MPa] | DC coil | |||
DPF1.0E | 直动式 | 15 | 10 | DPF1.0E-001 |
DPF1.2E | 直动式 | 15 | 10 | DPF1.2E-001 |
DPF1.4E | 直动式 | 15 | 10 | DPF1.4E-001 |
DPF1.8E | 直动式 | 15 | 10 | DPF1.8E-001 |
DPF2.0E | 直动式 | 15 | 10 | DPF2.0E-001 |
Coil Parameters
Model | Rated Voltage | Voltage Change | Rated Power | Wiring Connection | Insulation Class | Protection Grade | Order Number |
V | W | ||||||
DPFX07-007 | DC12V | ±10% | 6.24 | Plug | E | IP67 | DPFX07-007 |
DIMENSIONS
Model | Port(ODF) | Dimension[mm] | |||||
inch | mm | A | B | C | D | F | |
DPF1.0E~2.0E | - | 6.35 | 80 | 700 | 40 | 40 | 38 |
