Westinghouse 920673A Txv Kit R-410A 5 Ton Air Handler

Product Description

The WESTINGHOUSE 920673A is a thermal expansion valve (TXV) kit designed for use with R-410A refrigerant in 5-ton residential air handler systems. The TXV meters refrigerant flow into the evaporator coil based on superheat, maintaining efficient heat exchange across the full operating range of the system. This kit is installed by licensed HVAC technicians during new installations, refrigerant system retrofits, or TXV replacements in split-system air conditioning and heat pump applications. At 5 tons of capacity, this valve is sized for larger residential and light commercial systems.

This TXV kit is specifically intended for air handler applications running R-410A refrigerant at 5-ton capacity. It is used on the GB5BM model air handler, with the specific applied unit part number 904311GD/GB5BM-X60K-C. Installation is typical in split-system cooling and heat pump setups where precise refrigerant metering is required to maintain system efficiency and protect the compressor from liquid slugging.

Key Features

• Designed for R-410A refrigerant systems
• Sized for 5-ton air handler capacity
• Functions as a metering device controlling refrigerant superheat at the evaporator
• Kit format includes components needed for a complete TXV replacement or installation
• Compatible with both air conditioning and heat pump operation

Compatibility

Designed for use on the WESTINGHOUSE GB5BM model air handler, specifically unit part number 904311GD/GB5BM-X60K-C.

Installation Notes

TXV replacement and installation must be performed by an EPA Section 608 certified HVAC technician. The refrigerant system must be fully recovered and the system de-energized before removing the existing metering device. Proper evacuation to required micron levels is required before recharging with R-410A. Verify superheat and subcooling readings after installation to confirm correct TXV operation.

Technical Specifications

• Refrigerant Type: R-410A
• Capacity: 5 Ton
• Application: Air Conditioning and Heat Pump
• Used On Unit Part Number: 904311GD/GB5BM-X60K-C
• Used On Model: GB5BM Air Handler

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 920673A