Markel ET9STS Stat 326010-701 this differential air pressure switch

this differential air pressure switch monitors draft inducer performance to ensure proper combustion airflow before ignition

ensuring it stays closed against system pump head

confirming specific system hydraulic requirements with technical staff is recommended

A critical feature for field technicians is the manual lift stem

What is the maximum supply pressure allowed for this unit

Markel ET9STS Stat 326010-701 this differential air pressure switchThe Markel ET9STS is a heavy duty line voltage thermostat engineered specifically for high capacity heat only applications. Built with a single pole single throw (SPST) snap action switch, this industrial heating control is rated for 22 Amps at 120 277V resistive loads, making it a reliable choice for direct connection to baseboard heaters, fan forced unit heaters, and radiant heating elements. The bimetal actuator provides a consistent 2 degree