As the designated direct replacement for HC27CB118

this general service valve is engineered to handle diverse media

Secure Hub Attachment: Standard 1/2 inch bore with set screw provides a vibration-resistant connection to the motor shaft

the universal IAQ contacts are specifically designed for this purpose

preventing the furnace from starting its heating cycle

Lochinvar & A.O. Smith 100093810 Switch 324846-701 As the designated direct replacementThe Lochinvar & A. O. Smith 100093810 Switch is a critical safety component designed specifically for natural gas water heaters, including the high volume FG40T34 residential model. As a primary water heater door switch, this part functions as an electrochemical interlock, ensuring the burner assembly only receives fuel when the access door is fully seated and secured. This OEM replacement part is engineered to meet the precise tolerances of Lochinvar