A Trane VAL20518 Thermostatic Expansion Valve/TXV meters refrigerant in response to system demands, keeping cooling performance consistent when the HVAC system is running.
The thermostatic expansion valve/TXV regulates refrigerant flow into the evaporator so the HVAC system can maintain proper pressure, temperature and cooling efficiency. Its R22 compatibility, 3-ton capacity rating and 5/8" connection size are critical for accurate metering and dependable operation within the heating and cooling unit.
The thermostatic expansion valve/TXV may be approaching failure if the heating and cooling equipment shows poor temperature control, reduced cooling capacity, icing at the evaporator or unstable suction pressure. Common indicators include refrigerant leaks around the valve, corrosion or frost buildup and you might notice the system short cycling or running longer than normal in hotter conditions.
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