All About the Thermostatic Expansion Valve
A thermostatic expansion valve is a device that controls the flow of refrigerant gas in refrigeration and air conditioning systems. It does this by regulating the pressure inside your system. This, in turn, regulates the temperature of your home or office building. The best thing about these valves is that they are designed to handle extreme weather conditions easily, whether it’s blistering hot or cold outside. How Does a Thermostatic Expansion Valve Work? The thermal bulb sensor on a thermostatic expansion valve is designed to sense the temperature of cooling water. As the incoming tap water starts to cool, it contacts the bulb sensor and begins transferring heat from its surroundings into itself until equilibrium has been reached between both systems. When this happens, a wax pellet inside of the thermal bulb expands or contracts according to the amount of energy dissipated for equilibrium. This movement of internal components within an expansion device will cause needle valves within its structure to move accordingly, allowing more fluid through with the exact amount needed. The thermal bulb releases less heat as more cold water flows through these internal structures. This allows pressure to build up behind them while also increasing flow rates...
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