Lochinvar & A.O. Smith 100277772 Pressure Switch 323055-751 it utilizes a Buna-N diaphragm

it utilizes a Buna-N diaphragm and O-rings to ensure quick response and high flow rates

The HC43MF230 is typically set for CCW (Counter-Clockwise) rotation from the lead end

With a 15-second pre-purge and a 7-second ignition period

Durable Construction: High-grade extruded aluminum blades and frame with corrosion-resistant brass and stainless steel hardware

Double Throw) switch

Lochinvar & A.O. Smith 100277772 Pressure Switch 323055-751 it utilizes a Buna-N diaphragmThe Lochinvar & A. O. Smith 100277772 Pressure Switch is a critical safety component engineered for high altitude applications in Crest FBN and FBL heating boilers. This F9 high altitude air pressure switch is factory calibrated with a 4. 1 in WC set point to monitor combustion chamber pressure accurately in thinned atmospheres. It serves as a proving switch, ensuring the combustion air blower provides sufficient flow for a clean, safe burn before the