40-175-540S - Smith Series 40 Heavy-Duty Oxygen Regulator with Hard Hat Guard, 0-175 PSIG

Reliable Oxygen Control for Professional Welders

When your welding or cutting project demands consistent high-flow oxygen delivery, the Smith Series 40 Heavy-Duty Oxygen Regulator is the tool you can trust. Model 40-175-540S is built to withstand the rigors of daily use in shipyards, fabrication shops, and construction sites. It comes fully equipped with Smith's signature "Hard Hat" gauge guard, a heavy-duty steel cage that protects your gauges from knocks, drops, and impact damage, ensuring your equipment stays operational longer.

This regulator isn't just tough; it's smart. The internal design features a resin bonnet insert that allows for smooth, easy pressure adjustments, even when the system is under high pressure. Safety is paramount, which is why it includes an external relief valve that automatically releases excessive pressure in the event of a surge, protecting both the regulator and the operator. The stainless steel diaphragm prevents freeze-up, making this regulator a versatile choice for shops that utilize both standard high-pressure cylinders and liquid oxygen sources.

Whether you are performing heavy oxy-fuel cutting, heating, or managing manifold gas feeds, the Series 40 delivers up to 175 PSIG with precision. The large, easy-to-read 2.5-inch gauges help you monitor tank and line pressure at a glance. Backed by a 3-year limited warranty, this Smith regulator represents a solid investment in quality and reliability for any professional welder's toolkit.