Skip to Main Content
Canadian
Canadian owned and operated

Smith 35-125-540 Series 30 Two-Stage Oxygen Regulator CGA 540

$560.05/ea $368.07/1 per ea only $368.07/eaSave 34%

Usually ships within 3-5 business days

OVERVIEW

Miller Smith 35-125-540 Two-Stage Oxygen Regulator

Experience the ultimate in gas control with the Miller Smith 35-125-540 Two-Stage Oxygen Regulator. Designed for professional welders and fabricators who demand accuracy, this Series 30 regulator delivers a "set it and forget it" performance. Unlike single-stage regulators that allow outlet pressure to rise as the cylinder pressure falls, this two-stage unit maintains your set pressure from a full cylinder down to empty. This means you get a consistent flame profile throughout your entire cut or weld, without the hassle of stopping to tweak your regulator settings.

The 35-125-540 is built to last in the toughest shop environments. It features a solid brass body and a nickel-plated bonnet that resists corrosion and wear. Inside, Smith's legendary Sure-Seat filtered seat technology protects the heart of the regulator. By preventing metal shavings, dirt, and other debris from damaging the high-pressure seat, Smith ensures that this regulator provides years of dependable, leak-free service. The diaphragm is crafted from a reinforced neoprene composite, offering superior flexibility and response to pressure changes compared to stainless steel diaphragms found in lesser units.

This regulator is rated for a maximum inlet pressure of 3000 PSIG and provides a delivery range of 0-125 PSIG, making it versatile for a wide range of cutting, heating, and welding tasks. It connects via a standard CGA 540 fitting. The large, easy-to-read 2-inch gauges feature polished brass cases and shatter-resistant polycarbonate lenses, combining style with rugged safety. An auto-reset safety relief valve provides an added layer of protection against high-pressure surges. Backed by a 3-year limited warranty and made in the USA, the Smith 35-125-540 is an investment in quality that pays for itself through improved efficiency and reduced equipment downtime.

Additional Information
Brand:Smith Equipment
Cga Fitting:CGA 540
Used On Which Gas:Oxygen
Max Outlet:125 PSI
Max Inlet:3000 PSI
Item:Regulator
Stages:Two Stage
Series:Series 30
Gauge Diameter:2.0 inch
Body Material:Brass
Diaphragm Material:Neoprene Composite
Warranty:3 Years
Packaging Description:1 per ea

INCLUDED

  • 1 x Smith Series 30 Two-Stage Oxygen Regulator (35-125-540)
  • 1 x Set of Instructions

APPLICATIONS

  • Oxy-fuel cutting and welding
  • Heavy-duty brazing and heating
  • Laboratory gas delivery
  • Industrial fabrication shops
  • Maintenance and Repair Operations (MRO)
  • Applications requiring constant outlet pressure

FAQ

A two-stage regulator reduces cylinder pressure in two steps, which maintains a constant outlet pressure and flow rate even as the cylinder pressure drops. This eliminates 'pressure creep' and the need to frequently readjust settings.

The Smith 35-125-540 has a delivery pressure range of 0-125 PSIG.

It uses a CGA 540 inlet connection, which is the standard fitting for Oxygen cylinders in the United States and Canada.

Sure-Seat is a proprietary feature by Smith that uses a filtered high-pressure seat to prevent debris and contamination from entering the seating area, ensuring a tight seal and extending regulator life.

Yes, the Series 30 is an industrial-grade regulator designed for medium to heavy-duty applications in fabrication and construction.

Yes, Smith Series 30 regulators are covered by a 3-year limited warranty.

The diaphragm is constructed from durable, reinforced laminated Neoprene, which offers precise pressure adjustment and long service life.

No, this regulator is specifically designed and cleaned for Oxygen service with a CGA 540 connection. Using it with other gases or adapters can be dangerous and may void the warranty.