0781-0532 - Victor SR 450D-346 Heavy Duty Air Regulator, 5-125 PSIG Delivery

Victor SR 450D-346 Heavy Duty Industrial Air Regulator

The Victor SR 450D-346 (0781-0532) is a premium heavy-duty single-stage regulator designed specifically for industrial air applications. Engineered by Victor, a leader in gas control equipment, the SR 450 series is built to withstand the rigors of daily industrial use while providing precise and reliable pressure control. This model features a robust die-forged brass body that offers superior strength compared to cast alternatives, ensuring it can handle the physical demands of shop environments and heavy machinery operations.

At the heart of this regulator is a large 3.25-inch stainless steel diaphragm. Unlike neoprene or rubber diaphragms, stainless steel provides excellent resistance to contamination and maintains its elasticity over a longer period, resulting in consistent delivery pressure and reduced drift. This is particularly important in applications where stable air pressure is critical for process consistency or testing results. The regulator is rated for a maximum inlet pressure of 3000 PSIG and provides a versatile delivery range of 5 to 125 PSIG, making it suitable for a wide variety of pneumatic tools, testing equipment, and shop air distribution tasks.

The SR 450D-346 is equipped with a CGA 346 inlet connection, the standard for industrial air cylinders, and a 5/8"-18 LH(F) outlet connection. It features large, easy-to-read 2.5-inch brass gauges that display cylinder pressure (up to 4000 PSIG) and delivery pressure (up to 200 PSIG). For ease of operation, the regulator includes a forged T-handle adjusting screw with a Delrin insert bushing and a stainless steel ball in the key, ensuring smooth, low-torque adjustment even under pressure. Safety is paramount, and this unit includes an external self-reseating relief valve (though not designed to protect downstream equipment, it adds a layer of safety for the regulator itself). An electroless nickel-plated bronze sintered inlet filter protects the internal seating mechanism from particulate damage, further extending the unit's operational life.