Hover cursor over image to view larger picture

Harris® Model 450-125-540 Heavy Duty Oxygen Single Stage Regulator, CGA-540

Airgas Part #:HCL3002497

Harris Calorific

Manufacturer #:3002497


Log in to get your price
$212.41 /Each
Package Size: 1 Each
$212.41 Each
$212.41 Each

Typically in Stock

Item Details

  • Harris® Model 450-125-540 is an economically priced industrial-duty regulator, but with premium features found only in high priced regulators. The 450 has a stainless steel diaphragm and a Harris exclusive tamper-proof self-seating safety relief device.


  • High end features for an economical price
  • Stainless steel diaphragm
  • Internal tamper-proof self-reseating safety relief valve
  • Brass body and bonnet
  • Brass T-screw bar style knob
  • 2.5" brass dual scale gauges
  • Pressure Regulation of 0.3 PSIG
  • Max. inlet PSIG is 500
  • Delivery Pressure Gauge 30RZ PSIG
  • Supply Pressure Gauge is 400 PSIG
  • One-piece encapsulated seat design with internal filter and PTFE Teflon® seat
  • Made in the USA
  • UL® listed and CGA-E-4 certified


  • Conforms to CGA-E-4
  • UL® listed


  • Tamper-proof, self-reseating internal HP safety valve included

Product Attributes

Regulator Type

» Single Stage Regulator

Gas Service

» Oxygen
» O2

Delivery Rate

» 0 - 125 psig
» 200 psig

Inlet Connection

» CGA-540


» Heavy Duty

Outlet Connection

» 9/16" - 18 RH (Male)

Gauge Diameter

» 2.5"