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RADNOR™ Model ST9 Harris® Heavy Duty Flowmeter Argon And Argon/CO2 Mix Flowmeter Regulator, CGA 580

Airgas Part #:RAD64003866

Manufacturer Part #:3101102

$200.35 /Each

Item Details

  • RADNOR™ Harris® Style Heavy Duty Pressure Compensated Flowmeter Regulator - Model ST9 - This flowmeter regulator incorporates a regulator and a flowmeter into one compact unit. It is pressure compensated to 20 PSIG and flows up to 70 SCFH. The ST9 flowmeter regulator is designed to control SMARTOP™ Argon, Cabon Dioxide Mixes and ARCAL™ shielding gases. The flow tube, with dual calibration, and float are easily changed for different gases. It includes a sensitive needle valve for fingertip control and durable, easy-to-read, flow tube and cover. This regulator features a brass body, one-piece encapsulated seat design with internal filter and PTFE Teflon® seat. It has an ISO 7289 male quick connect outlet connection. For vertical mounting only.


  • ISO 7289 Quick connect outlet for easy teardown and setup
  • Compensated to 20 psig
  • Accurate flow control to 70 SCFH
  • Regulator has a brass body and bonnet for longer service life
  • One-piece encapsulated seat design with internal filter to protect the PTFE Teflon® seat from particulate contamination
  • Neoprene diaphragm for better pressure control
  • Brass screw for adjustments
  • Sensitive needle valve for fingertip control permits highly accurate flow settings
  • Durable cover and easy-to-read dual calibrated flow tube


  • Gas-shielded welding
  • Industrial applications