handling differential pressures up to 75 psi on 1/2" valves to prevent bypass and ghost flow

) air pressure switch designed for negative pressure sensing applications in high-efficiency venting systems

This switch is designed for seamless integration with existing vacuum tubing and electrical spade connectors

What is the difference between this and a synchronous model

It is easily distinguished from the ignitor by its single-wire connection and thinner rod profile

Modine 5H0730570008 Switch 321702-401 handling differential pressures up toThe Modine 5H0730570008 Blocked Vent Switch is a critical safety component engineered to monitor exhaust integrity in Modine gravity vent heaters, including PA, PAE, and PD series units manufactured after 1986. Functioning as a high limit spill switch, this manual reset device detects flue gas spillage caused by downstream obstructions or inadequate draft. By monitoring temperatures within the draft diverter, it interrupts the 24V control circuit to