Victor Heavy Duty Oxygen Regulator - Eddie's Welding Equipment

The Victor® SR450D-540 (0781-0527) is a heavy-duty, oxygen regulator designed for professional cutting, welding, and heating applications that require consistent performance and precise gas control. Built for industrial use, this regulator is ideal for situations where minor delivery pressure increases (as cylinder pressure decreases) do not impact work quality or test accuracy.

Featuring a forged brass body and housing cap, stainless steel diaphragm, and 2.5-inch brass gauges, the SR450D-540 delivers superior reliability and control under demanding conditions. The regulator also includes a sintered inlet filter for added protection.

Key Features

• Genuine Victor® OEM heavy-duty oxygen regulator
• Single-stage design for high-capacity, industrial gas control
• Forged brass body and housing cap for durability and corrosion resistance
• Stainless steel 3.25″ diaphragm ensures stable pressure delivery
• 2.5″ brass gauges display cylinder and delivery pressures clearly
• External self-reseating relief valve
• Sintered inlet filter keeps impurities from entering the regulator
• Meets Victor’s performance standards for precision cutting, welding, and heating

Technical Specifications

• Brand: Victor®
• Model: SR450D-540
• Part Number: 0781-0527
• Type: Heavy-duty single-stage oxygen regulator
• Body Material: Forged brass
• Gas Type: Oxygen, Air, or Inert Gas
• Inlet Connection: CGA 540
• Outlet Connection: 9/16″-18 RH (Male)
• Maximum Inlet Pressure: 3,000 PSIG
• Delivery (Outlet) Pressure Range: 5 – 125 PSIG
• Gauge Range: Inlet: 4,000 PSIG / Outlet: 200 PSIG
• Flow Coefficient (Cv): 0.27
• Diaphragm: Stainless steel, 3.25″ diameter
• Dimensions: 7.25″ L × 5.13″ W × 7″ H
• Finish: Brass
• Relief Valve: External, self-reseating (not downstream protective)