2019-2020 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

Product #

MFG #

Size

173118 173119 173124 173318 173125 173130 173131 173133 173324 173136 173336 173148 173160

Thermal Expansion Valve • Regulates the rate of liquid refrigerant entering the evaporator • Helps maintain superheat

B1789849 B1789851 B1789853 B1789855 B1789857 B1789859 B1789861 B1789863 B1789865 B1786868 B1789871 B1789878 B1789888

0.049 0.051 0.053 0.055 0.057 0.059 0.061 0.063 0.065 0.068 0.071 0.078 0.088

Product #

MFG #

Refrigerant

Application 1.5 – 2.0 Ton 2.0 – 3.0 Ton 3.5 – 5.0 Ton

173345 173350 173360

TX2N4A

R-410A R-410A R-410A

TX3N4 TX5N4

Thermal Expansion Valve • Regulates the rate of liquid refrigerant entering the evaporator

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

• Helps maintain superheat • Heat pump or cooling only

Product #

MFG #

Refrigerant

Application

Product #

MFG #

Size

173455 173450

173380 173382

9EVR22-2 9EVR410-1

R-22

1.5 – 3.0 Ton HX 1.5 – 3.0 Ton HX

1179943 1179944

0.052 0.057

R-410A

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