The Unico System a00808-005 Txv 4 Ton R-22 Chatleff

Product Description

The THE UNICO SYSTEM a00808-005 is a thermostatic expansion valve (TXV) designed for R-22 refrigerant systems with a 4-ton capacity. The valve uses a Chatleff threaded connection and is rated to AHRI standards. It meters refrigerant flow into the evaporator coil, maintaining the correct superheat to protect the compressor and maximize system efficiency. This TXV is installed in refrigerant coil assemblies and heat pump configurations within the Unico high-velocity mini-duct system. Licensed HVAC technicians handling R-22 systems are the primary installers of this component.

This valve is used on Unico M and V Series units, including the 4260 and 4860 model families, in both refrigerant coil and heat pump applications. Confirmed compatible part numbers include MC4260H and M4860CL1-E. The Chatleff threaded connection is standard to these Unico coil assemblies. It is suited for residential and light-commercial installations where the Unico high-velocity system is the selected air distribution platform.

Key Features

• R-22 refrigerant service, 4-ton capacity
• Chatleff threaded connection for direct fitment to Unico coil assemblies
• AHRI-rated for standardized performance verification
• Compatible with both refrigerant coil and heat pump configurations
• Designed for M and V Series, 4260, and 4860 Unico model families
• PROP 65 warning applicable

Compatibility

Designed for use on THE UNICO SYSTEM M and V Series units, model families 4260 and 4860, including refrigerant coil part numbers MC4260H and M4860CL1-E, in both refrigerant coil and heat pump applications.

Installation Notes

Installation must be performed by an EPA Section 608 certified HVAC technician, as this valve is used in an R-22 closed refrigerant circuit. Recover refrigerant and confirm the system is fully depressurized before disconnecting the existing TXV. Verify Chatleff thread engagement and torque fittings to the coil manufacturer specifications before recharging. After installation, check superheat at the suction line to confirm proper valve operation before returning the system to service.

Technical Specifications

• Refrigerant Type: R-22
• Capacity: 4 ton
• Connection Type: Chatleff Threaded
• Applicable Standard: AHRI
• Used On: Refrigerant Coil, Heat Pump
• Compatible Models: M and V Series, 4260, 4860
• Compatible Part Numbers: MC4260H, M4860CL1-E

Standard Information

• Brand: THE UNICO SYSTEM
• Manufacturer Part Number: a00808-005