Lochinvar & A.O. Smith 100278231 Coupler Els PW 17895 specifically engineered for compatibility with

specifically engineered for compatibility with the FS4-3RP and FS4-15RP models

Critical Safety: Prevents heat exchanger damage and potential fire hazards by monitoring high-limit temperature levels

Simplifies the valve actuator conversion process with all necessary hardware (coupler

This part is critical for technicians troubleshooting furnace ignition failures or unstable flame signals in packaged units like the YSC060 series

Manual Override Function: The built-in manual stem allows technicians to open the valve manually during system evacuation or power failures

Lochinvar & A.O. Smith 100278231 Coupler Els PW 17895 specifically engineered for compatibility withThe Lochinvar & A. O. Smith 100278231 Coupler is a precision engineered pump coupler replacement designed for high performance hydronic and domestic hot water systems. As a critical mechanical link between the motor and the pump assembly, this genuine OEM part ensures smooth torque transmission while compensating for minor shaft misalignments that can lead to premature bearing failure. This specific model is the direct technical replacement for the