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Thermostatic Expansion Valve
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. Possible applications are refrigeration systems like freezers, ice makers, dehumidifiers as well as air conditioners and heat pumps at various evaporation temperature ranges.
Features
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Exchangeable valve orifice, easy to stock holding, convenient for capacity match and repair
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Thermal bulb utilizes cross charge technology, providing consistent superheat degree over the whole evaporation temperature range
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Valves with MOP function can be provided to assure reliable compressor operation
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Wide vaporizing temperature range
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Realiable and consistent performance of superheat control
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General specifications
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Applicable for all common HCFC and HFC refrigerants such as: R22, R134a, R404A, R407C, R410A, R507
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Medium temperature TS min./max.: -40C/+70C
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Max. operating pressure PS: 2,1 3,5 MPa (21 35 bar)
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Installation position:
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o
Preferably valve head upwards
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o
Flow direction from inlet A to outlet B
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Certifications: UL/CSA and PED declaration
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Technical Parameters
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RFKA series angle shape valve
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Inlet 3/8" flare connection
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Capillary tube length 1,5m
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Equalization port:
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o
RFKA flare/flare type with 1/4" flare connection
o
o
RFKA flare/solder type with 6mm solder connection
o
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Ref.
PS
[MPa] |
Model Valve Body |
Part
Number1) |
Connection Type |
Temp.
Range2) |
MOP3) |
Inlet ØA |
Outlet4)
ØB |
Ext.
ØC |
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|
|
|
|
|
|
|
|
|
|
|
|
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In / Out / Ext. Pressure Equal. |
|
|
Flare |
Flare |
Solder |
Flare |
Solder |
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|
|
|
|
[C] |
[C] |
[inch] |
[inch] |
[mm] |
[inch] |
[inch] |
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|
R22 2,8 |
RFKA01-4.8-22 |
RFK-24001 |
flare / flare |
+10 to -40 |
- |
3/8 |
1/2 |
- |
- |
- |
- |
|
|
RFKA01E-4.8-13 |
RFK-24002 |
flare / flare / flare |
|
|
|
1/2 |
- |
- |
1/4 |
- |
|
|
RFKA01-4.8-26 |
RFK-24003 |
flare / solder |
|
|
|
- |
12 |
- |
- |
- |
|
|
RFKA01E-4.8-06 |
RFK-24004 |
flare / solder / solder |
|
|
|
- |
12 |
- |
- |
6 |
|
|
RFKA01-4.8-07 |
RFK-24005 |
flare / solder |
|
|
|
- |
- |
1/2 |
- |
- |
|
|
RFKA01E-4.8-08 |
RFK-24006 |
flare / solder / solder |
|
|
|
- |
- |
1/2 |
- |
1/4 |
|
R407C 2,8 |
RFKA02-5.2-24 |
RFK-24007 |
flare / flare |
+10 to -40 |
- |
3/8 |
1/2 |
- |
- |
- |
- |
|
|
RFKA02E-5.2-20 |
RFK-24008 |
flare / flare / flare |
|
|
|
1/2 |
- |
- |
1/4 |
- |
|
|
RFKA02-5.2-27 |
RFK-24009 |
flare / solder |
|
|
|
- |
12 |
- |
- |
- |
|
|
RFKA02E-5.2-28 |
RFK-24010 |
flare / solder / solder |
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|
|
- |
12 |
- |
- |
6 |
|
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RFKA02-5.2-32 |
RFK-24011 |
flare / solder |
|
|
|
- |
- |
1/2 |
- |
- |
|
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RFKA02E-5.2-18 |
RFK-24012 |
flare / solder / solder |
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|
|
- |
- |
1/2 |
- |
1/4 |
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R404A / R507A 3,5 |
RFKA03-3.4-21 |
RFK-24013 |
flare / flare |
+10 to -40 |
- |
3/8 |
1/2 |
- |
- |
- |
- |
|
|
RFKA03E-3.4-15 |
RFK-24014 |
flare / flare / flare |
|
|
|
1/2 |
- |
- |
1/4 |
- |
|
|
RFKA03-3.4-03 |
RFK-24015 |
flare / solder |
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|
|
- |
12 |
- |
- |
- |
|
|
RFKA03E-3.4-02 |
RFK-24016 |
flare / solder / solder |
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|
|
- |
12 |
- |
- |
6 |
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|
RFKA03-3.4-09 |
RFK-24017 |
flare / solder |
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|
|
- |
- |
1/2 |
- |
- |
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|
RFKA03E-3.4-10 |
RFK-24018 |
flare / solder / solder |
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|
|
- |
- |
1/2 |
- |
1/4 |
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R134a 2,1 |
RFKA04-4.0-23 |
RFK-24019 |
flare / flare |
+10 to -40 |
- |
3/8 |
1/2 |
- |
- |
- |
- |
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RFKA04E-4.0-19 |
RFK-24020 |
flare / flare / flare |
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1/2 |
- |
- |
1/4 |
- |
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RFKA04-4.0-29 |
RFK-24021 |
flare / solder |
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|
|
- |
12 |
- |
- |
- |
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RFKA04E-4.0-17 |
RFK-24022 |
flare / solder / solder |
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|
|
- |
12 |
- |
- |
6 |
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RFKA04-4.0-30 |
RFK-24023 |
flare / solder |
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|
|
- |
- |
1/2 |
- |
- |
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RFKA04E-4.0-31 |
RFK-24024 |
flare / solder / solder |
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|
|
- |
- |
1/2 |
- |
1/4 |
Nominal Capacity
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No. |
Nominal Capacity in kW |
Valve orifice Model |
Valve orifice Part number |
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|
R22 |
R407C |
R404A / R507C |
R134a |
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|
|
0X |
1,04 |
1,09 |
0,76 |
0,62 |
RFKA-023-0X |
RFK-24036 |
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0 |
1,66 |
1,7 |
1,34 |
1,1 |
RFKA-023-00 |
RFK-24037 |
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1 |
3,5 |
3,62 |
3,06 |
2,18 |
RFKA-023-01 |
RFK-24038 |
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2 |
4,87 |
5 |
4,15 |
2,77 |
RFKA-023-02 |
RFK-24039 |
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3 |
6,82 |
7,02 |
6,01 |
4,07 |
RFKA-023-03 |
RFK-24040 |
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4 |
9,49 |
9,92 |
8,73 |
5,56 |
RFKA-023-04 |
RFK-24041 |
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5 |
14,9 |
14,8 |
12,5 |
8,35 |
RFKA-023-05 |
RFK-24042 |
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6 |
19,9 |
20,2 |
15,8 |
12 |
RFKA-023-06 |
RFK-24043 |
Note?Nominal capacity at t_ev = 5C, t_c = 38C, operating superheat 4K and subcooling 4K.
Dimensions
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HVAC Valve
