TSK - Flap Style Flow Meter

Brand: KOBOLD Instruments, Inc

The KOBOLD TSK flap style flow meter employs a hinged flap (vane) within the flow stream. As the flow rate changes, the flap rotates in its fitting.

The flap is attached to a mechanical measuring indicator via a dampening mechanism and a process sealing system, providing visual measurement of system flow.

The indicating mechanism can be fitted with optional adjustable setpoint switches, a 4-20 mA transmitter with HART® protocol or Profibus-PA®.

A wide variety of wetted materials are available, including 316L stainless steel, Hastelloy® C22, and PTFE, making this flap style flow meter suitable for numerous applications in measuring aggressive liquids.

The flap design leaves very little flow restriction; therefore, very little pressure drop exists across the flow meter.

The flap design is also very tolerant of dirty liquids and liquids containing large solids.
  • Available Materials of Construction Include Stainless Steel, Hastelloy® C22, and PTFE
  • Line Sizes from 1-1/2" to 20"
  • Can Be Supplied for Horizontal or Vertical Piping Runs
  • Flap Measuring Technique Yields Very Low Head Loss
  • Excellent Tolerance to Dirty Liquids and Suspended Solids
  • Optional Setpoint Switches, 4-20 mA with HART® or Profibus-PA®, Foundation Fieldbus®
  • Superior Dampening System for Stable Flow Readings
  • Calibrations for Media Density Available
  • Certifications/Approvals: ATEX, IECEx, SIL


Flow Range

  • 6.6-26 GPM to 880-6600 GPM


  • ± 2.5 % of Reading


  • 1-1/2” to 20” ANSI Flange or DIN Wafer

Maximum Operating Temperature

  • 570° F

Media Category

  • Liquid


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