Gems Sensors FS-4 Series Ryton Flow Switch, Elbow, Piston Type, SPDT Switch, 0.25 gpm Flow Setting, 9/16"-18 UNF-2B
FS-4 Series - Low Cost, Molded Plastic Construction. The FS-4 Series makes flow protection economical for a broad range of industrial applications such as welders, lubrication systems, medical sterilizers and laundry chemicals dispensing.