Lochinvar & A.O. Smith 100110735 Pressure Switch 320734-701 which manifest as a high-pitched

which manifest as a high-pitched screeching

it follows the standard Fenwal 7-pin interface

Gear Train Protection: The "lost motion" drive absorbs impact at the end of the stroke

Propane requires a smaller aperture due to higher manifold pressure

as American Standard is a Trane brand

Lochinvar & A.O. Smith 100110735 Pressure Switch 320734-701 which manifest as a high-pitchedThe Lochinvar & A. O. Smith 100110735 Pressure Switch is a critical safety component designed for high efficiency commercial water heaters and furnace draft inducer systems. This OEM replacement part (replaces 9005920215 and 192761) functions as a pressure blower switch, ensuring the combustion blower is generating sufficient negative pressure before allowing the ignition sequence to proceed. For technicians troubleshooting a 3 flash error code or a