Resideo T104B1046 Actuator 328140-751 The Lennox 64W86 Pressure Switch

The Lennox 64W86 Pressure Switch is a critical safety component engineered specifically for two-stage gas furnaces

Smith Cyclone series and various Lochinvar KBX/WBX models

and mounting depth

Common Questions: How do I know if the Sterling 11J35R08510 inducer motor is failing

this component features a 1 5/16" bore with a precision-machined 5/16" x 5/32" keyseat to ensure positive drive under heavy loads

Resideo T104B1046 Actuator 328140-751 The Lennox 64W86 Pressure SwitchThe Resideo T104B1046 Actuator is a commercial grade thermostatic radiator valve operator designed for precise hydronic temperature control. This specific model features a remote setpoint and sensor configuration with a 16 foot capillary, allowing for accurate ambient temperature sensing even when the radiator is recessed or covered. Engineered for compatibility with V110 series valves, it utilizes a liquid filled element to provide reliable