Glass Rotameter -FC Series Manual Flow Controllers


  • Accurately adjusts and maintains gas and liquid flows
    • Model FC 8744 – low flows with variable downstream pressures
    • Series FC 8800 – with variable upstream pressures
    • Series FC 8900 – with variable downstream pressures
  • Flow Ranges
    • Air: Up to 2130 scfh / 56,000 ln/h
    • Water: Up to 480 gph / 1820 l/h
  • Pressure Ratings: Up to 1000 psig / 69 bar
  • Controller body made from 316 stainless steel, brass or aluminum (FC 8744 only)
  • Controller diaphragm made from Buna-N, Teflon® or Viton® fluoroelastomers
  • Needles made from 316 stainless steel for cartridge valve, NRS valve or high-flow needle valve


  • Integral mounting to flow meter saves space and improves installation
  • High-resolution valves provide precise flow control for many applications
  • Choice of different diaphragm and O-ring materials ensures process immunity and flexibility
  • Available in a range of sizes and front or rear mounting options to easily meet installation requirements


  • Pharmaceutical production
  • Oil and gas pumping and refining processes
  • Fuel cell research
  • Chemical manufacturing
  • Analytical instrumentation
  • Water treatment and distribution systems


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Glass Rotameter Flow Controller – Precise fluid controllers ensure constant pressure across valves.

Models FC8744 / FC8800 / FC8900

Glass Rotameter Flow Controller.  Supply or discharge pressures may vary. But with flow controllers from Brooks Instrument, the differential pressure across the integral manual flow regulating valve remains constant. An internal diaphragm-actuated control valve receives incoming pressure on one side and outlet pressure with spring action on the other. This design balances pressure variations to maintain a fixed differential pressure across the valve that ensures constant flow. The result is precise flow control for many gas and liquid-service applications. Can be used as a stand alone flow controller or integrally mounted to a flow meter to save space and improve installation.