40-175-540 - Smith Series 40 Heavy Duty Oxygen Regulator, 0-175 PSIG, CGA 540

Reliable Oxygen Control for Professional Welders

When you are out on the job site or deep in a fabrication project, you need gear that doesn't quit. The Smith Series 40 Oxygen Regulator (40-175-540) is built to handle the rigors of daily industrial use while providing the precision control you need for quality cuts and welds. With a delivery pressure range of 0-175 PSIG, this heavy-duty single-stage regulator is the workhorse you want on your cylinder. Whether you are running a cutting torch, a heating tip, or a manifold system, the Series 40 delivers the high flow and consistent pressure required to keep your flame stable and your work clean.

Built Tough for the Shop and Field

Durability is key in welding equipment, and Smith delivers with a rugged brass body and a nickel-plated bonnet that resists corrosion and wear. The gauges are often the first thing to break on a regulator, but the Series 40 features large, 2.5-inch brass gauges protected by shatter-resistant polycarbonate lenses. This means you can read your pressures clearly without worrying about cracked glass or bent needles from minor bumps and knocks. The die-cast "T" bar adjusting screw is designed for comfort and leverage, allowing you to dial in your pressure settings easily, even when wearing heavy welding gloves.

Safety and Ease of Use

Safety is paramount when handling high-pressure oxygen. This regulator is equipped with an external relief valve that protects the unit from damage due to inadvertent high-pressure surges. The valve automatically resets, ensuring you can get back to work safely. Additionally, the internal resin bonnet insert allows for smooth, easy adjustment even at high-pressure levels, eliminating the jerky, sticky feel found in lesser regulators. The color-coded labels help you instantly identify gas service capabilities, reducing the risk of hook-up errors in busy shop environments.

Versatility for Every Application

From general fabrication and construction to heavy equipment manufacturing and shipbuilding, the Smith 40-175-540 is versatile enough to handle it all. Its stainless steel diaphragm not only lasts longer but also allows you to use this regulator with liquid oxygen cylinders without fear of freeze-up. This makes it an excellent choice for shops that utilize both high-pressure and liquid gas supplies. Backed by a 3-year limited warranty, this regulator is an investment in quality that pays off with years of trouble-free service.