Description
The Heat Controller 4202 Thermal Expansion Valve 4 Ton is a refrigerant metering component applied in cooling circuits to regulate flow into the evaporator coil based on system conditions. It operates through a thermostatic sensing bulb and internal diaphragm mechanism that adjusts refrigerant passage to maintain proper superheat levels. It is positioned in air conditioning and heat pump systems within HVAC systems on the liquid line before the evaporator section to control distribution. The valve supports balanced cooling performance, prevents liquid refrigerant floodback to the compressor, and maintains stable thermal exchange during continuous operation cycles.
