Liebert 127972P1S Pressure Switch 340155-7026 Professional-grade furnace maintenance requires specific

Professional-grade furnace maintenance requires specific safety tolerances

the kit includes precisely machined burner orifices

This indicates the shaft rotates counter-clockwise when viewed from the lead/wire end of the motor

this is a non-reset cutout designed to provide an absolute safety stop

Liebert 127972P1S Pressure Switch 340155-7026 Professional-grade furnace maintenance requires specificThe Liebert 127972P1S Pressure Switch is a high precision OEM replacement engineered for critical pressure monitoring in Liebert environmental control systems and industrial HVAC high side applications. This robust switch is factory calibrated with a 150 PSI Cut Out (CO) and a 100 PSI Cut In (CI), providing a reliable 50 PSI differential to maintain system stability and prevent rapid cycling. As a direct successor to the 127972P1, this component