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The Hedland Flow Meter is a variable area (rotameter) instrument. A precision machined, sharp-edged Orifice is located within the piston assembly and forms an annular opening with the contoured metering cone. The piston assembly carries a cylindrical PPS/ ceramic magnet that is magnetically coupled to an external flow Indicator that moves precisely, in direct response to movement of the piston. A calibrated spring opposes flow in the forward direction. This spring decreases viscosity sensitivity and allows the flow meter to be used in any position, including inverted.

Hedland air/compressed gas meters are designed for use in pneumatic systems. Additionally, with a variety of end fittings and different material types, these meters can be used in a wide range of industrial gas flow processes as well as monitoring compressor efficiencies and pneumatic tool usage. Standard meters provide an economical solution for operators needing a quick, visual indication of flow, without the use of additional electronics. Expansion options are available to allow integration into remote systems via electronic output.


  • Direct reading
  • Internal calibrated spring
  • 360° rotatable guard/scale
  • Easier-to-read linear scale
  • No flow straighteners or special piping required
  • Relatively insensitive to shock and vibration
  • Special scales available


All configurations come standard with SCFM/PSI multi-pressure flow scales.  L/SEC and bar scales available. 
Excludes MR Transmitter (MR) and Flow-Alert (F1, F2, RS1NO, RS1NC, RS2NO, RS2NC) configurations.

For single pressure flow scales, call for a quote.

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H-971 N/A 3 in. NPTF (Female) Flow Meter $2,050.00 Add To Cart
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H-972 N/A 3 in. BSPT (Female) Flow Meter $2,050.00 Add To Cart
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