Pay in 4 interest-free payments of $28.55 Learn more
Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
Zero Differential Operation: The diaphragm hung design allows the valve to open and close reliably even at 0 PSI pressure differential
Key Performance Benefits
Built to withstand the high inrush currents typical of AC compressor startup
chiller loops
As the direct replacement for the legacy 066163
Lochinvar & A.O. Smith 100170488 Lower Sensor 30067439-890 Zero Differential Operation: The diaphragmThe Lochinvar & A. O. Smith 100170488 Lower Sensor is a critical thermistor based component engineered for precise thermal monitoring in high efficiency water heating systems. As an exact replacement for the TST1188 sensor, this part ensures the control board receives accurate resistance feedback from the lower portion of the tank. For technicians troubleshooting Lochinvar water heater error codes or A. O. Smith temperature sensor faults, installing
