Gems Sensors & Controls Datasheets for Flow Switches

Flow switches are devices that monitor flow and send a trip signal to other devices, like a pump, for protection. These switches can be used for the measurement of gases, liquids, and steam.
Flow Switches: Learn more

Product Name Notes
Engineered for Positive Liquid Flow Detection at Pressures to 2000 psig (137.9 bar) Unique, Patented Cam Design Assures Low Pressure Drop and Does not Require Bellows, Seals, or Mechanical Linkages...
Flow Rate Settings: 0.1 GPM to 1.0 GPM Port Size: 1/4" NPT Primary Construction Material: Brass Setting Type: Fixed A unique, patented piston design assures accuracy within 20% over a...
Flow Rate Settings: 0.1 GPM to 1.5 GPM Port Size: 9/16" - 18 UNF Primary Construction Material: Ryton® Setting Type: Fixed More robust porting hubs offer better structural integrity...
Flow Rate Settings: 0.1 GPM to 11 GPM (0.5 LPM to 41 LPM) Port Size: 1/2" to 1-1/2" (NPT or G thread) Setting Type: Fixed The FS-600 series flow switch...
Flow Rate Settings: 0.10 GPM to 1.50 GPM Port Size: 1/4" NPT Primary Construction Material: Brass, Stainless Steel Setting Type: Fixed Measuring only 1" x 2-3/4" (25 mm-70 mm), these...
Flow Rate Settings: 0.25 GPM to 2.00 GPM Port Size: Multiple Primary Construction Material: Brass or Stainless Steel Setting Type: Fixed These rugged inline flow switches use 100 micron filtration...
Flow Rate Settings: 0.25 GPM to 5.0 GPM Port Size: 3/4" NPT Primary Construction Material: Polypropylene Setting Type: Fixed The FS-500 offers low cost flow monitoring with a variety of...
Flow Rate Settings: 0.5 GPM or 2.0 GPM Port Size: 3/4" or 1" IPS Primary Construction Material: Clear PVC Setting Type: Fixed Designed for low cost flow/no-flow monitoring. This series...
Flow Rate Settings: 0.5 GPM to 100.0 GPM Port Size: 1" NPT to 2" NPT Primary Construction Material: Bronze or Stainless Steel Setting Type: Fixed The FS-200 Series offers accurate...
Flow Rate Settings: 0.50 GPM to 3.00 GPM Port Size: 1/2" NPT, 3/4" NPT, 1/2" Tube Compression Fitting Primary Construction Material: 316 Stainless Steel Setting Type: Fixed The FS-480 large-body...
Flow Rate Settings: 0.75 GPM to 10.0 GPM Port Size: 3/4" Primary Construction Material: Bronze Setting Type: Fixed Provides accurate flow detection in water and oil with 1% repeatability. Flow...
Flow Rate Settings: 0.75 GPM to 14.0 GPM Port Size: 3/4" Primary Construction Material: Bronze Setting Type: Adjustable Provides accurate flow detection in water and oil with 1% repeatability. Flow...
Flow Rate Settings: Liquids - 0.1 GPM to 1.5 GPM; Air/Gases - see chart Port Size: 1/4" NPT Primary Construction Material: Brass or Stainless Steel Setting Type: Fixed This series...
Flow Rate Settings: Liquids - 50-300 cc/min.; Air/Gases - See Chart at Bottom of Page Port Size: 1/4" NPT Primary Construction Material: Brass or Stainless Steel Setting Type: Fixed These...
Flow Rate Settings: Liquids - Infinite Adjustment between 0.5 GPM and 20.0 GPM; Air/Gases - See chart Port Size: 1/2" NPT Primary Construction Material: Brass or Stainless Steel Setting Type:...
Flow Rate Settings: Liquids 0.5 GPM to 5 GPM Port Size: 1/2" NPT Primary Construction Material: Polypropylene Setting Type: Fixed These slim, inline switches reduce pressure drop to a minimum.
Low Pressure Drop Design Flow Rate Settings: 0.25 GPM to 2.00 GPM Port Size: 3/8" NPT Male and 1/4" Quick Disconnect (QDC) Male Primary Construction Material: Polypropylene Setting Type: Fixed...