Lochinvar & A.O. Smith 100111914 Pressure Switch 328140-751 Engineered from corrosion-resistant copper

Engineered from corrosion-resistant copper

providing consistent hydronic valve performance and long-term zone valve synchronization for professional contractors

it utilizes a NEMA 48 frame (5-5/8 inch diameter) and is thermally protected to prevent winding failure during high-static conditions or over-amping

Thermal Accuracy: Factory-calibrated 55-155°F range prevents heat exchanger fatigue and potential safety hazards

Lochinvar & A.O. Smith 100111914 Pressure Switch 328140-751 Engineered from corrosion-resistant copperFor service professionals maintaining Lochinvar and A. O. Smith high efficiency systems, the Lochinvar & A. O. Smith 100111914 Pressure Switch is the mandatory OEM solution for restoring proper sequence of operation. This air pressure switch is a precision calibrated safety component designed to verify adequate blower performance and venting integrity before allowing the ignition cycle to proceed. It serves as a direct fit replacement for furnace and