The Victor® SR461B-510 (0781-0589) is a heavy-duty, propane regulator engineered for professional cutting, heating, and welding applications. Designed for medium to high-capacity use, this regulator provides stable gas control and consistent delivery pressure even as cylinder pressure decreases — ideal for large-scale industrial and fabrication operations.

Built with a die-forged brass body and housing cap, the SR461B-510 combines strength, precision, and reliability. It features large 2.5-inch brass gauges and a stainless steel 3.25-inch diaphragm. The electroless nickel-plated sintered bronze inlet filter ensures clean gas flow, while the forged T-handle allows easy, accurate pressure control.

Key Features

• Genuine Victor® OEM heavy-duty single-stage regulator
• Designed for propane (LPG) and other low-pressure fuel gases
• Forged brass body and housing cap for long-lasting durability
• 2.5″ brass gauges with clear pressure display
• 3.25″ stainless steel diaphragm for stable delivery pressure
• Forged T-handle for easy, accurate pressure adjustment
• Stem-type seat mechanism and precision-machined nozzle for maximum flow control
• External self-reseating relief valve (not designed for downstream protection)
• Recommended for heavy-duty industrial and commercial applications

Technical Specifications

• Brand: Victor®
• Model: SR461B-510
• Part Number: 0781-0589
• Series: SR450 Series
• Division: Heavy Duty
• Type: Single-stage fuel gas regulator
• Body Material: Forged brass
• Gas Type: LPG (Propane)
• Inlet Connection: CGA 510
• Outlet Connection: 9/16″-18 LH (Male)
• Maximum Inlet Pressure: 350 PSIG
• Delivery (Outlet) Pressure Range: 2 – 40 PSIG
• Gauge Range: Inlet: 400 PSIG / Outlet: 60 PSIG
• Flow Coefficient (Cv): 0.27
• Diaphragm: 3.25″ stainless steel
• Gauge Size: 2.5″ brass
• Dimensions: 7.25″ L × 5.13″ W × 7″ H
• Finish: Brass
• Relief Valve: External, self-reseating (not for downstream apparatus)