Model 447-FG-1/4 in. Pipeline Single-Stage Flowgauge Regulator


Model 447-FG-1/4 heavy duty back-entry pipeline single-stage flowgauge regulator for use with Argon (Ar), Carbon Dioxide (CO2)


Model 447 flowgauge regulator was designed to deliver high gas flows from low pressure piping systems. The 447 features a sold brass body and bonnet. For installations requiring back entry equipment.


  • Heavy duty back entry flowgauge regulator
  • Designed to deliver high gas flows from low pressure piping systems
  • Easy-to-operate brass T-screw
  • Forged brass body and bonnet for longer service life
  • Rubber diaphragm for better pressure control
  • 2.5 in. Brass-plated steel dual scale (psi/kPa) easy-to-read gauges
  • One-piece encapsulated seat design with internal filter to protect the PTFE Teflon® seat from particulate contamination
  • 1/4 in. NPT (F) inlet connection
  • Ideal for installations requiring back entry equipment
  • Conforms to CGA E-4


Warning -

Cancer and Reproductive Harm -


Warranty Information

  • 7 Years

What's Included

  • Model 447-FG-1/4 in. Single-Stage Flowgauge Regulator



Adjusting Screw Brass T-screw
Body Forged brass
Bonnet Forged brass
Capacity High flow
Certification CGA E-4
Delivery Flow Gauge (SCFH) 100
Delivery Flow Range (SCFH) 10 - 100
Duty Heavy
Gas / Gas Service Argon
Carbon Dioxide
Gauges 2.5 in. Brass-plated steel dual scale (psi/kPa)
Inlet Connection 1/4 in. NPT (F)
Maximum Inlet Pressure (PSIG) 500
Outlet Connection 5/8 in. - 18 (F)
Recommended Items/Accessories Inert Gas Hose - Single Black BxB R-grade 3/16 in. x 10 ft. - PN 4300138
Seat PTFE Teflon®


Warranty 7 Years