Lochinvar & A.O. Smith 100208399 Pressure Switch 30067439-890 It is designed to be

It is designed to be threaded into existing 3/4" NPT ports on the boiler or remote sensor manifold

this part number is identical to and serves as a direct replacement for models 358553 and standard 374A-3/4-30 valves

it features a dual-rated capacitance with a tolerance of +/- 5%

and thermostat circuits in Modine Hot Dawg HD and HDS series heaters

Ensure all power is disconnected and the high-voltage/low-voltage leads are mapped correctly to the designated terminals during the swap

Lochinvar & A.O. Smith 100208399 Pressure Switch 30067439-890 It is designed to beProfessional grade Lochinvar & A. O. Smith 100208399 Pressure Switch is a critical safety component designed for high efficiency boilers and water heaters. As a low air pressure switch, it monitors the differential pressure within the combustion chamber to ensure the blower is moving sufficient air for safe ignition and sustained combustion. This OEM part is a direct replacement for PRS2434 and PRS2434K, as well as legacy part number 100166179.