0781-0528 - Victor SR450 Series Heavy Duty Inert Gas Regulator, 5-125 PSIG

Reliable Precision for Heavy-Duty Projects

When your work demands absolute reliability and precise gas control, the Victor SR450D-580 Heavy Duty Inert Gas Regulator is the tool you can trust. Designed for professional welders and fabricators, this regulator is built to withstand the rigors of daily industrial use while delivering the consistent performance Victor is famous for. Whether you are purging pipes with nitrogen, shielding a TIG weld with argon, or running heavy-duty fabrication equipment, the SR450D-580 ensures your gas flow remains stable and accurate, allowing you to focus on the quality of your work.

Built to Last

Durability is at the core of the SR 450 Series. The regulator features a die-forged brass body and housing cap, which provides exceptional strength and resistance to the bumps and knocks common in busy workshops and job sites. Inside, a large 3.25-inch stainless steel diaphragm takes the place of standard rubber components. This upgrade not only extends the life of the regulator but also provides superior sensitivity, ensuring that your delivery pressure stays exactly where you set it, even as the cylinder pressure drops. This is critical for maintaining weld quality and preventing defects caused by inconsistent gas coverage.

User-Friendly Design

Victor has designed the SR450D-580 with the operator in mind. The forged T-handle makes adjusting pressure easy, even when wearing heavy welding gloves. Thanks to the Delrin cap bushing, the adjustment action is smooth and precise, eliminating the jerky, sticky feel found in lesser regulators. The large, easy-to-read 2.5-inch brass gauges allow you to monitor your cylinder and delivery pressure at a glance. With a delivery range of 5-125 PSIG and a standard CGA-580 connection, this regulator is a versatile workhorse ready for a wide range of inert gas applications in structural steel, repair, and general fabrication.