Description
The Rheem-Ruud KT-43-NGA is an OEM replacement power head designed for use with thermostatic expansion valves (TXV) on R-22 refrigerant systems. Replacing a worn or failed TXV power head restores accurate refrigerant metering, protects the compressor from liquid slugging, and brings your system back to peak efficiency without the cost of a full valve replacement.
Product Overview
The power head is the sensing and actuating element of a thermostatic expansion valve. It responds to suction line temperature and pressure to modulate refrigerant flow into the evaporator coil, maintaining the correct superheat for reliable, efficient operation. The KT-43-NGA is engineered to Rheem-Ruud specifications, ensuring a precise fit and performance match for compatible equipment.
Key Features
- OEM replacement power head for Rheem-Ruud TXV assemblies
- Designed for R-22 refrigerant systems
- Restores proper superheat control and refrigerant metering
- Protects the compressor from liquid slugging and overfeeding
- Engineered to Rheem-Ruud OEM specifications for reliable fit and function
- Cost-effective alternative to full TXV valve replacement
Application
- Refrigerant: R-22
- Component Type: TXV Power Head (Replacement)
- Compatible Equipment: Rheem-Ruud systems equipped with matching TXV assemblies
Why Replace the Power Head?
A failed or sluggish TXV power head can cause improper superheat, reduced system capacity, compressor damage, and high energy consumption. Swapping the power head with a genuine Rheem-Ruud replacement part is a fast, economical repair that gets the system back to factory performance specifications.







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