Dungs Pressure Switches 277329 Air Pressure Switch 0.16"-1.2" WC 4 mm

The Dungs Pressure Switches 277329 Air Pressure Switch is an essential part of HVAC systems that are used to regulate and measure air pressure. It has a pressure range of 0.16-1.2” WC and a 4mm connection is used to safely control equipment such as furnaces, boilers and air handlers. It can turn an electrical circuit on or off depending on the pressure of the air. For instance, it can confirm that a certain duct has adequate airflow or that a blower is working well. Advantages include protection of equipment from damage resulting from lower air circulation, proper combustion in heating systems, and better quality indoor air.