FC Series

FC Series Manual Flow Controllers

Precise fluid controllers ensure constant pressure across valves.

Models FC8744 / FC8800 / FC8900

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.


  • 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

Product Type

Mass Flow Controller


Available as Standalone or Integrally Mounted to Flow Meter


Materials of Construction

Stainless Steel

Flow Range (Full Scale Capacity)

.024 – 480 gph

.10 -2130 scfh


Max Temperature

178oC (350oF)

Max Pressure

Refer to Maximum Pressure Ratings Table in Data Sheet


O-Ring Materials

Viton® fluoroelastomers

Process Connections

1/8″ – 1/4″ F-NPT
1/8″ – 1/4″ Tube Compression
1/4″ ID Hose
3/4″ F-NPT
Integral connection

Diagnostics & Display



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