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If the paddle is deflected by water flow but the circuit remains open
meaning it will close the circuit once the plenum temperature drops back to 140°F
Simplified Wiring: Equipped with standard 1/4" quick-connect terminals for fast
leak-proof seal compatible with standard commercial piping configurations
Lennox 18M40 TXV 318518-761 If the paddle is deflectedThe Lennox 18M40 TXV is a precision engineered thermostatic expansion valve (TXV) designed for high efficiency refrigerant metering in residential and light commercial HVAC systems. This OEM Lennox replacement part features a 3 8" x 1 2" ODF (Outside Diameter Female) solder connection, ensuring a leak resistant line set interface for technicians. Equipped with a 1 4" external equalizer and a 30 inch capillary tube, the 18M40 provides responsive