Description
The Schwank JS-0575-UL Air Proving Switch is a pressure sensing control component to confirm airflow conditions within ventilation and combustion systems. Rated for 70 inches of water column (WC), it responds to changes in air pressure and transmits an electrical signal based on airflow presence or absence. It is commonly applied in gas-fired heating equipment and other HVAC systems where airflow verification is required during burner operation. Connected through a sensing line, the switch communicates pressure status to the control circuit to support coordinated system operation and controlled equipment response during use.
