What You Need to Know About a Thermostatic Expansion Valve

Most air conditioning systems have thermostatic expansion valves (TXV) as a primary component. Knowledge of the valve increases efficiency in the HVAC operations conducted by technicians. The TXV complements other essential parts of a refrigeration cycle. The Function of the Thermostatic Expansion Valve The thermostatic expansion valve has a critical role in the refrigeration process. The valve controls the flow rate of the refrigerant fluid into the evaporator. This function is mistaken with the following: Control of air temperature Determining head pressure Controlling the capacity and humidity levels Altering suction pressure The Main Parts of the Thermostatic Expansion Valve The TXV is brass material. The valve contains an inlet and outlet, which help entry and exit of refrigerant. The TXV is between the condenser and the evaporator in the refrigeration cycle. The other parts of the valve include the main body, the powerhead, and the capillary tube. How the Thermostatic Expansion Valves Works The thermostatic expansion valve works by regulating the rate of flow of the fluid. The process ensures a continuous flow of the refrigerant into the evaporation coil. The constant flow occurs when the rate of evaporation is equal to the speed of fluid flow. The valve pins...

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