This switch is engineered for high-cycle reliability in demanding HVACR environments

Corrosion Resistance: Features a stainless steel power element to prevent diaphragm fatigue and environmental degradation

and small commercial additions

provided the electrical ratings (25A at 240V) meet or exceed the original part specifications

Broad Compatibility: Genuine Lennox OEM quality ensures a direct fit for hundreds of models

Schneider Electric (Barber Colman) MK-4811 Pneumatic Valve Actuator Freon This switch is engineered forPneumatic Valve Actuator, 5 to 10 Psi Spring Range, Nema Type 1, 30 Psig Maximum Air Pressure, Spring Retracts Actuator Shaft and Raises Valve Stem on loss of Air Pressure, Used with 1 1 2" to 2" VB 9xxx Series MK 4811 is the direct replacement for 23 109 This item does not qualify for free shipping.