This is for a New Mercoid PGW-153-P2 Gas Pressure/Differential Pressure Switch. The pressure switch is a new old stock item and does have some light marks and scratches on it from being out of the box. Please see all of the photos. #ZA218 Series PG Gas Pressure/Differential Pressure Switch, Model - Weather resistant Enclosure (NEMA 2, 3R), Circuit - (1) Mercury Switch, SPDT (3-wire), Range 0.5 - 5 psig, Agency Approvals - CSA, FM Large sensitive diaphragm and reliable, time proven mechanical design are combined in Series PG pressure/differential pressure switches. For use with air and other compatible gases, they feature excellent $1% of full scale repeatability, clear easy-to-read scale and convenient external setpoint adjustment.
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