About the Mars Low-Pressure Switch, Open on Pressure Drop at 15, Auto Resets at 40 (43371)
Save when you get the MARS 43371 LP PRESSURE SWITCH CLOSE 40 here at PlumbersStock. Pressure switches make contact on pressure rise/fall, which enables its switching operation. A pressure switch senses negative pressure in a furnace and shuts it down as a safety measure against harmful fumes and gas leaks.
As the manufacturer describes it, MARS Pressure Switches deliver the reliability and performance that makes them the most trusted electromechanical sensor. The MARS line of pressure switches cover many new R410A applications along with traditional pressure setting switches. It's easy to replace. Mars is an industry leader in both innovation and affordability.
