Lennox 21L87 Thermal Expansion Valve(Txv)

The Lennox 21L87 Thermostatic Expansion Valve which is manufactured the flow of refrigerant in HVAC systems. When the temperature falls below a certain level the TXV opens to allow more refrigerant to pass through it. On the other side, if the temperatures increase beyond a certain level the valve capacity to regulate the flow reduces. It is an original genuine equipment part that will not corrode or wear out when used on Lennox equipment. It is normally 4.0 Inches wide, 3.0 Inches high, and 5.0 Inches long to fit into existing HVAC systems.