Gems Sensors & Controls Datasheets for Positive Displacement Flow Meters

Positive displacement flow meters measure the volume or flow rate of a moving fluid or gas by dividing the media into fixed, metered volumes. These devices consist of a chamber that obstructs the media flow and a rotating or reciprocating mechanism that allows the passage of fixed-volume amounts.
Positive Displacement Flow Meters: Learn more

Product Name Notes
Oil Flow Switch -- FS-930 Series 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 Switch -- FS-4 Series 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 Switch -- FS-927 Series 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...
High Inline Pressure Compact Flow Switch -- FS-380 Series 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...
Stainless Steel Flow Switch -- FS-480 Series 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 Switch -- FS-925 Series 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 Switch -- FS-926 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...
Externally Adjustable Flow Switch -- FS-10798 Series 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 Switch -- FS-150 Series 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.
Inline Plastic Flow Switch -- FS-380P Series 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...