Hover cursor over image to view larger picture


WARNING: This product can expose you to chemicals including Nitrogen Dioxide, which is known to the State of California to cause cancer, and Carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Harris® Model 330-125-540 Oxygen Liquid Cylinder Regulator, CGA-540

Airgas Part #:HCL3001090

Harris Calorific

Manufacturer #:3001090

Log in to get your price
$295.06 /Each
Package Size: 1 Each
$295.06 Each
$295.06 Each

Typically in Stock

Item Details

  • Harris® 330-125-540 Oxygen Liquid Cylinder Regulator is designed for gaseous withdrawal from oxygen, carbon dioxide, argon and nitrogen liquid cylinders. Regulator provides accurate pressure regulation that is ideal for most industrial applications. It comes with 2" dual brass scale gauge and chrome-plated bonnet with brass adjusting screw for smooth adjustment. Regulator incorporates 540 CGA inlet and minimum 9/16" outlet with self-seating internal HP safety valve for safety. It features one-piece PTFE Teflon® encapsulated seat design with an internal filter and 2 3/4" stainless steel diaphragm. It is equipped with forged brass body and it conforms to CGA E-4 standard for gas pressure regulators.


  • Forged brass body and bonnet
  • 2 3/4" stainless steel diaphragm
  • PTFE seals
  • One piece encapsulated seat design with an internal filter and a PTFE teflon seat
  • Tamper proof, self seating internal H.P. safety valve
  • Designed specifically to operate on liquid cylinders but can be used on high pressure cylinders without damage
  • 2 1/2" dual scale gauges


  • Conforms to CGA E-4
  • UL Listed

Product Attributes

Regulator Type

» Liquid Cylinder Regulator

Gas Service

» Oxygen

Delivery Rate

» 0 - 125 psig » 200 psig

Inlet Connection

» CGA-540

Outlet Connection

» 9/16" - 18"

Gauge Diameter

» 2.5 in