The Lennox 12J20 Thermostatic Expansion Valve Kit is a high-capacity, precision-engineered component designed for commercial HVAC systems, supporting up to 45 tons. Built specifically for R410A refrigerant, this valve optimizes cooling performance by accurately controlling refrigerant flow, ensuring efficient operation even in demanding conditions. 

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https://www.partshnc.com/txv-kit-4-5ton-r410a-ac