the D9875103 is built to withstand the rigorous thermal cycling and moisture levels inherent in 90% AFUE furnace systems

this specific model is a pneumatic regulator designed exclusively for compressed air and non-corrosive gases

this York HVAC furnace limit switch prevents heat exchanger damage by breaking the circuit if internal plenum temperatures exceed safe operational thresholds

Precision Sensing: High-sensitivity diaphragm detects minute changes in static pressure to prevent delayed ignition

Broad Compatibility: Fits Bunn commercial brewers like the T3

Johnson Controls A70BA-18 Temperature Control R-410A the D9875103 is built toThe Johnson Controls A70BA 18 Temperature Control is a heavy duty low limit freeze protection thermostat engineered for critical refrigeration and heating applications. Designed with a single pole, single throw (SPST) contact structure, this "Open Low" control is specifically built to protect HVAC coils from freezing by opening the circuit when the sensed temperature drops to the user defined setpoint. With a temperature range of 15F to 55F and a