width (1-7/8")

Always verify your specific pilot model and material (Iron vs

The precision-machined solder cups provide superior capillary action during brazing

and 243-SR models where a robust 1-piece clamp is required for the upper housing assembly

This 36-inch HVAC replacement part is engineered with a straight boot configuration to ensure a secure

Lochinvar & A.O. Smith 100208387 Pressure Switch width (1-7/8")The Lochinvar & A. O. Smith 100208387 Pressure Switch is a critical safety component calibrated to a 1. 15" WC setpoint for commercial and residential water heating systems. This SPST (Single Pole Single Throw) air pressure switch is designed to monitor vent pressure and ensure the inducer motor is moving sufficient combustion air before allowing the ignition sequence to proceed. As a direct replacement for the Lochinvar PRS20031 and 100166126, this