this 1-inch orifice plays a critical role in determining the flow capacity and discharge characteristics of the regulator assembly

The Johnson Controls ST-D24 is a precision 10k ohm Type II thermistor engineered for accurate air temperature monitoring within commercial HVAC ductwork

Precision Sensing: Utilizes high-sensitivity surface contact to provide accurate temperature feedback

Using a standard pan in a high-heat application (like an oil furnace) will lead to melting

weak flame rectified signals

White-Rodgers 752-1 Switch Els PW 17895 this 1-inch orifice plays aThe White Rodgers 752 1 is a high performance SPDT changeover switch engineered for hydronic systems utilizing 1 2 inch (5 8 inch O. D.) tubing. Built for demanding mechanical environments, this automatic changeover control facilitates the critical transition between heating and cooling circuits in combination hot and chilled water systems. It eliminates the need for manual intervention by automatically toggling the thermostat to operate the