Proven Reliability: The P47 Series is a long-standing industry standard

Delivering 180 lb-in torque

Enhanced System Safety: Restores proper flame patterns to reduce the risk of heat exchanger damage

Key Benefits Fail-Safe Security: True mechanical spring return ensures the system returns to a safe position during power loss

Lennox 11J12 Pressure Switch 323613-751 Proven Reliability: The P47 SeriesEnsure your combustion air system is operating within manufacturer parameters with the Lennox 11J12 Pressure Switch. This critical safety component is a high altitude specific differential switch designed for Lennox furnace repair and maintenance, featuring a factory set . 85" WC pressure switch actuation point. Engineering for precise draft proving, this part monitors the static pressure within the inducer housing to confirm proper venting before