ALCO Thermo-Expansion Valve Series T Exchangeable Power Assemblies and Orifices

Modular design for economical logistics and easy assembly and servicing
• Very good stability due to large diaphragm diameter
• Constant superheat across a wide application range
• Superior partial load performance due to double seat orifice design
• Bi-flw capability for applications in heat pumps
• Capillary tube length 1.5 m and 3m 
• Max. allowable pressure PS:
- 46 bar with XB power assembly
- 31 bar with XC power assembly
• Medium Temperature range TS: -45…+75°C
• Flanges: brazing ODF/ODM connection

Orifice Connection standard. Flange Angle type. Solder/ODF Power assembly    

C501-5 mm (10x16)

C501-5 (3/8"x5/8")

C501-7 (1/2" x 5/8")

A576 (5/8" x 7/8" ODF  22x28 mm (ODM)  


XB1019SW-1B (R404A/R507A)

XB1019NW-1B (R407C)

XB1019MW-1B (R134A)

XB1019BW-1B (R449A/R448A)




7/8" x 7/8" ODF

1-1/8" x 1-1/8" ODF




Orifice Connection standard. Flange. Angle type. Solder/ODF Power assembly    

9152 (taisnais)


7/8" x 7/8" ODF

1-1/8" x 1-1/8" ODM


XC726NW-2B (R407C)

XC726SW-2B (R404A/R507A)

XC726MW-2B (R134A)


X9144-B11B 9149

7/8" x 7/8" ODF

1-1/8" x 1-1/8" ODM






Orifice Nominal capacity
R404A R407C R134A
X22440-B4B 12.2 kW 18.7 kW 13.5 kW
X22440-B5B 15.7 kW 24.0 kW 17.3 kW
X22440-B6B 21.5 kW 32.9 kW 23.6 kW
X22440-B7B 29.0 kW 44.4 kW 32.0 kW
X22440-B8B 37.2 kW 51.7 kW 37.2 kW
X11873-B4B 40.0 kW 62.0 kW 45.0 kW
X11873-B5B 51.0 kW 80.0 kW 57.0 kW
X9117-B6B 63.0 kW 99.0 kW 71.0 kW
X9117-B7B 72.0 kW 112.0 kW 81.0 kW
X9117-B8B 99.0 kW  155.0 kW 112.0 kW
X9117-B9B 120.0 kW 188.0 kW 135.0 kW
X9166-B10B 154.0 kW 241.0 kW 174.0 kW
X9144-B11B 174.0 kW 273.0 kW 197.0 kW
X9144-B13B 209.0 kW 327.0 kW 236.0 kW


*Nominal capacity is based on the following conditions:

R407c +4°C dew point +38°C bubble point
+43°C dew point
1 K
R134a,R404a,R410a,R507a +4°C +38°C 1K
Refrigerant Evaporating temperature Condensing temperature Subcooling
Valve selection for other operating conditions see “Correction Tables for Thermo-Expansion Valves Series TI, TX3, TX6, T and L”, selection
tables in EMERSON CLIMATE TECHNOLOGIES catalogue or the “Controls Navigator” selection tool which can be downloaded from EMERSON CLIMATE TECHNOLOGIES website

Firma "Revers" LTD doesn't grant any warranties regarding the technical characteristics and parameters specified in this home page, and assumes no liability for any damages of any nature arising from the use of information provided here. Mentioned here Technical data and pictures are informative, and errors and misprints are not excluded.