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

This lead-free atmospheric vacuum breaker features a durable brass body and a 1/2-inch female NPT connection

Is this cover compatible with the S7800A1140

SPDT Output: Versatile switching capabilities for both low-level shutdown and high-level alarm functions

High Efficiency: Low holding wattage reduces long-term operational costs and transformer sizing requirements

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