KSM - All-Plastic Flow Meter and Switch for Liquids or Gases

Brand: KOBOLD Instruments, Inc

The KOBOLD KSM series plastic variable area flow meter with flow switch is an excellent choice for applications with aggressive media.

There are no metal parts contacting the fluid. Measuring tubes are polyamide or polysulfone with other wetted parts made of PVDF, PVC and EPDM.

These rotameters are equipped with a scale for water or air and a percentage scale, as well as two adjustable markers and a PVC glue connection with cap nut.

The KSM series variable area flow meter measuring tube is available in polysulfone for very corrosive media and polyamide for less aggressive media. Both materials are rugged and shock resistant.
  • Shock and Corrosion Resistant
  • Direct Reading Scales for Water or Air
  • Large, Easy-To-Read Scale
  • Made in the USA
  • Quick Delivery


Measuring Range

  • 0.06-0.66 to 35-264 GPM
  • 0.5-3 SCFM to 50-400 SCFM


  • 1” to 2-1/2” Glue Socket or NPT Thread

Body Material

  • Polyamide
  • Polysulfone

Maximum Pressure

  • 145 psig

Maximum Temperature

  • 140° F


  • ± 4 % of Full Scale


  • Optional Reed Switch

Media Categories

  • Liquid
  • Gas


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