Totaline p540-2254 Universal Txv Kit 2.5 to 4 Ton R-22 R-407C

Product Description

The TOTALINE p540-2254 is a universal thermostatic expansion valve (TXV) kit designed to regulate refrigerant flow in 2.5- to 4-ton residential air-conditioning and heat-pump systems. Compatible with R-22 and R-407C refrigerants, it features balance-ported construction for stable operation across varying system loads. A built-in check valve handles reverse refrigerant flow during heat-pump operation. Externally adjustable superheat allows field technicians to match fixed-superheat OEM specifications without removing the valve body. The kit ships with multiple connection options and 35 inches of foam insulating tape for field installation.

This valve is suited for residential split systems and heat pumps operating on R-22 or R-407C refrigerant within the 2.5- to 4-ton capacity range. The external equalizer design compensates for distributor or coil pressure drop, making it appropriate for both replacement and retrofit installations on copper and aluminum evaporator coils. The ODF end connections integrate directly with standard refrigerant line sets used in residential HVAC work.

Key Features

• Balance-ported valve body maintains consistent operation under variable system load conditions
• Built-in check valve supports reverse refrigerant flow for heat-pump applications
• Externally adjustable superheat allows field calibration to match OEM fixed-superheat settings
• Compatible with both copper and aluminum evaporator coils
• Includes 35 inches of foam insulating tape for field installation
• ODF end connections with 3/8-inch inlet and 1/2-inch outlet for standard line-set integration

Compatibility

Designed for use with copper and aluminum evaporator coils in 2.5- to 4-ton residential air-conditioning and heat-pump systems operating on R-22 or R-407C refrigerant.

Installation Notes

Installation should be performed by an EPA 608-certified refrigeration or HVAC technician. Recover all system refrigerant and relieve system pressure before removing the existing metering device. Follow refrigerant manufacturer and local code requirements when working with R-22 or R-407C. Verify superheat setting against system design specifications after recharging and confirm proper system operation before leaving the job site.