Lennox 15D33 TXV 318518-761 while the double-disc design offers

while the double-disc design offers redundant sealing for maximum reliability

Compact Pneumatic Design: Engineered specifically for VAV terminal unit enclosures where space is at a premium

Durable Construction: Heavy-duty cast iron housing provides long-term reliability in commercial HVACR applications

verify fluid compatibility before installation in extreme temperature environments

whereas the older 0372271 is the standard brass model

Lennox 15D33 TXV 318518-761 while the double-disc design offersThe Lennox 15D33 TXV is a high performance 4 ton thermal expansion valve engineered for precise refrigerant metering in residential and light commercial cooling systems. This OEM Lennox replacement part features a 3 8" ODM inlet and a 1 2" ODF outlet, specifically designed for R 410A refrigerant applications. By accurately responding to evaporator pressure and temperature changes, the 15D33 expansion valve maintains optimal superheat, protecting your