and R744 (CO2)

Why is my one-pipe thermostat failing to regulate branch pressure

Precise Pressure Calibration: Factory-set to open at 440 PSI to protect high-side components from extreme pressure spikes

This cap is essential when performing routine maintenance or set-point adjustments on Sensus 243-8-2 and 243-12-2 units used in boilers

Johnson Controls A99-CLP-1 Mounting Clip and R744 (CO2)The Johnson Controls A99 CLP 1 is a professional grade surface mounting clip engineered specifically for the A99B temperature sensor series. Built for durability in demanding HVACR environments, this metal mounting clip ensures consistent thermal contact and secure placement of PTC silicon sensors on flat surfaces, preventing the air stratification issues or mechanical shifts that lead to inaccurate readings. It is a critical accessory for contractors