2020-2021 Purchasing Guide Volume 6
HVAC |
Refrigerant Metering Devices
Fixed Orifice Piston Flow Control • Universal pistons for use with R-22 or R-410A refrigerants • Regulates the rate of liquid refrigerant entering the evaporator • Always check outdoor unit rating plate for correct piston size
Thermal Expansion Valve • Regulates the rate of liquid refrigerant entering the evaporator • Helps maintain superheat
Product #
MFG #
Size
173118 173119 173124 173318 173125 173131 173133 173324 173136 173336 173148 173160
B1789849
0.049
B1789851
0.051
Product #
MFG #
Refrigerant
Application
B1789853 B1789855 B1789857
0.053 0.055 0.057
173345 173350 173360
TX2N4A
R-410A R-410A R-410A
1.5 – 2.0 Ton 2.0 – 3.0 Ton 3.5 – 5.0 Ton
TX3N4 TX5N4
B1789861
0.061
B1789863 B1789865 B1786868 B1789871 B1789878 B1789888
0.063 0.065 0.068
0.071
0.078
0.088
Fixed Orifice Piston Flow Control • Universal pistons for use with R-22 or R-410A refrigerants • Regulates the rate of liquid refrigerant entering the evaporator • Always check outdoor unit rating plate for correct piston size
Thermal Expansion Valve • Regulates the rate of liquid refrigerant entering the evaporator
• Helps maintain superheat • Heat pump or cooling only
Product #
MFG #
Size
Product #
MFG #
Refrigerant
Application
173380 173382
1179943 1179944
0.052
173455 173450
9EVR22-2
R-22
1.5 – 3.0 Ton HX 1.5 – 3.0 Ton HX
0.057
9EVR410-1
R-410A
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