Model 425-Ar100-580 Single-Stage Flowgauge Regulator


Model 425-Ar100-580 general-purpose heavy duty single-stage flowgauge regulator for use with Argon (Ar)


Model 425-Ar and mixes flowgauge regulator is based upon our premium Model 425 single-stage pressure regulator. It is a rugged, long lasting performer capable of 100 SCFH flow and it features an internal, self-seating high pressure safety valve.


  • Single-stage flowgauge regulator for use with argon and mixes
  • Designed for rugged, long-lasting performance
  • Easy-to-operate brass T-screw adjusting handle
  • Brass body and bonnet for longer service life
  • Neoprene diaphragm for improved pressure control
  • 2.5 in. Brass dual scale easy-to-read gauges
  • One-piece encapsulated seat design with internal filter to protect the PTFE Teflon® seat from particulate contamination
  • Flow capacity of 100 SCFH
  • UL® listed
  • 5/8 in. - 18 RH (F) outlet connection


Warning -

Cancer and Reproductive Harm -


What's Included

  • Model 425-Ar100-580 General-Purpose Single-Stage Flowgauge Regulator

Warranty Information

  • 7 Years



Adjusting Screw Brass T-screw
Body Brass
Bonnet Brass
Certification CGA E-4
UL® listed
Delivery Flow Range (SCFH) 0 - 100
Flow Capacity (SCFH) 100
Gas / Gas Service AR + Mixes
Gauges 2.5 in. brass
Inlet Connection CGA 580
Maximum Inlet Pressure (PSIG) 3000
Outlet Connection 5/8 in. - 18RH (F)
Seat One-piece encapsulated seat design with internal filter and PTFE Teflon® seat
Supply Pressure Gauge (PSIG) 4000


Warranty 7 Years