Constant Flow Regulator

Constant Flow Regulator

The Series 100 regulators from PortaGas are designed to maintain constant flow rates so you get real accurate monitor calibrations even as the cylinder pressure drops.



  • Knurled ON/OFF knob for easy grip with or without gloves
  • Rotate knob for audible ON/OFF click
  • No set screw on knob, meaning knob won’t strip out
  • Wide diaphragm design for precise flow control even as the cylinder pressure changes
  • Finer graduations for precise reading of cylinder contents
  • Stainless steel gauge
  • All wetted surfaces have proprietary passivated coating to ensure non-reaction with calibration gas
  • Wide choice of outlets and inlets available
  • Side outlet prevents tubing from kinking

Ordering Information

For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email This email address is being protected from spambots. You need JavaScript enabled to view it..


Catalog No.

Regulator, .25 LPM, C-10 90005509
Regulator, .5 LPM, C-10 90005510
Regulator, 1.0 LPM, C-10 90005520
Regulator, .25 LPM, CGA600 90009055
Regulator, .5 LPM, CGA600 90009206
Regulator, 1.0 LPM, CGA600 90009207