Dwyer Instruments 1638-1-B Diaphragm Pressure Switch 

PN: 1638-1-B

Diaphragm pressure switch, 0.20-1.0" w.c., SPDT, 15A, 120-480 VAC, 1/8" NPT

Operating Fluid	Air ; Non-Combustible Gases ; Non-Corrosive Gases
Port Size	1/8" NPT
Primary Type	Pressure Switch