Dungs Air Pressure Switch:
Differential air pressure switches are compact, field-adjustable pressure switches used to regulate burners automatically. Hose or NPT threaded connectors are available. Differential pressure switches are used to make or break a medium pressure circuit as it fluctuates in relation to the setpoint.
Air pressure switch dungs preferred in firing, ventilation and air-conditioning systems. Used as a pressure or vacuum switch or sometimes a pressure switch for air and non-aggressive gases. Do not use for natural gas, propane, butane and different combustible gases.