0781-0583 - Victor SR460A-300 Heavy Duty Acetylene Regulator, CGA-300, 2-15 PSIG

Technical Overview of the Victor SR460A-300 Acetylene Regulator

The Victor SR460A-300 (SKU: 0781-0583) is a premium component within the SR 450 Series, engineered specifically for heavy-duty and high-capacity industrial applications. This single-stage acetylene regulator is designed to manage high inlet pressures up to 3000 PSIG while delivering a consistent low-pressure output ranging from 2 to 15 PSIG. The unit is constructed with a die-forged brass body and a die-forged brass spring housing cap, materials selected for their exceptional tensile strength and resistance to deformation under industrial stress.

At the core of its performance is a large 3-1/4 inch (82.5 mm) stainless steel diaphragm. Unlike neoprene or rubber alternatives, the stainless steel composition provides superior sensitivity to pressure changes and remains unaffected by temperature fluctuations or gas composition, ensuring accurate, long-lasting service. The regulator utilizes a stem-type seat mechanism which enhances the sealing integrity of the device, crucial for maintaining safety and efficiency in fuel gas systems. A flow coefficient (Cv) of 0.27 indicates its capability to handle substantial flow rates required for heavy heating or cutting operations.

Operational precision is further refined by a Delrin insert bushing within the housing cap, which reduces friction on the adjusting screw, allowing for smooth, granular pressure adjustments. The adjusting screw itself features a forged T-handle, providing the necessary leverage for easy operation even when wearing protective gloves. To protect the internal components from particulate damage, the inlet assembly includes a sintered bronze filter that is electroless nickel-plated. Safety features include an external self-reseating relief valve, designed to vent excess pressure in the event of a malfunction, although it is not intended to protect downstream equipment. The unit connects via a CGA-300 inlet and a 9/16"-18 Left Hand Male outlet, standard for acetylene service.