If the flame is extinguished

Rapid Shut-Off Performance: The heavy-duty closing spring ensures the valve returns to the "at rest" closed position in under one second upon de-energization

high-pressure switch interlocks

this low loss header effectively decouples the primary/secondary piping

this sensor is technically compatible

Markel 52290004 Motor 320819-301 If the flame is extinguishedThe Markel 52290004 Motor is a precision engineered 480V single phase replacement motor designed specifically for heavy duty commercial heating applications. Operating at a fixed speed of 1590 RPM, this 0. 12 HP motor provides the necessary torque to maintain consistent airflow in industrial unit heaters and fan forced convection systems. As a genuine OEM component, it ensures exact mechanical alignment and electrical compatibility, preventing common