What is the primary function of a TXV (Thermostatic Expansion Valve) in an HVAC system?

The TXV's primary function is to meter the flow of liquid refrigerant into the evaporator coil while maintaining a constant superheat at the evaporator outlet.

How does a TXV respond to changes in the evaporator load?

The TXV automatically adjusts the refrigerant flow to match the evaporator load, ensuring optimal performance and efficiency.

What are the common components of a TXV?

A TXV typically consists of a valve body, a diaphragm, a spring, and a sensing bulb.

What is the purpose of the sensing bulb in a TXV?

The sensing bulb, filled with a volatile fluid, monitors the temperature of the refrigerant vapor leaving the evaporator and transmits this information to the diaphragm.

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