Lennox 12J36 Expansion Valve R-134A This 40-inch diffuser diptube features

This 40-inch diffuser diptube features a 3/4" x 3" connection

the 171750 sensing tube is the standard line used for connecting both standard and high-altitude Reznor pressure switches in UDAP and UDX-style units

To ensure accurate setpoint control

heat-resistant materials that resist degradation under extreme operating conditions

ensuring the control reads the true water level rather than a false signal caused by surging or priming

Lennox 12J36 Expansion Valve R-134A This 40-inch diffuser diptube featuresThe Lennox 12J36 is a 4 ton NXT indoor expansion valve engineered for critical refrigerant metering in high efficiency residential and light commercial evaporator coils. This thermostatic expansion valve (TXV) modulates refrigerant flow by sensing evaporator load conditions, ensuring the system maintains precise superheat levels. By reacting to real time temperature and pressure variables, the 12J36 prevents common failure points such as liquid