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The Sporlan Controls 109024 is a thermostatic expansion valve (TXV), also known as a thermal expansion valve, used in refrigerant circuits of HVAC systems like air conditioners and heat pumps. It acts as a metering device that controls the flow of refrigerant into the evaporator coil. Here's how it works: Sensing and Regulation: The TXV has a bulb filled with a temperature-sensitive liquid attached to the evaporator outlet. As the evaporator temperature rises, the pressure in the bulb increases.
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