The high-pressure Model 1500 inline flow switch is designed for f ield adjustability with both liquid (0.1 to 20.0 gpm) and gas (1 to 475 scfm) flow settings.
A magnet in the piston housing is displaced by the liquid/ gas flow or no-flow condition to actuate a hermetically sealed SPDT reed switch. Constructed of brass or 316 stainless steel, the switch is available with -in. NPT ports.
Thomas Products Ltd., Flow Switch Div., 987 West St., Southington, CT 06489, (860) 621-9101, thomasprod.com