Victor 0781-5218 Two Stage High Capacity Oxygen Regulator

Product Description

The VICTOR 0781-5218 is a two-stage, high-capacity oxygen regulator engineered for applications requiring precise and stable outlet pressure across a wide range of cylinder pressures. Built around a forged brass body with zinc-aluminum housing caps and a fabric-reinforced neoprene diaphragm measuring 2.7 inches, it delivers outlet pressure from 5 to 125 psig with a maximum inlet pressure of 3000 psig. The 0.488 Cv flow coefficient provides uniform flow performance with high sensitivity and accuracy. A 540 CGA inlet connection pairs with a 9/16 inch-18 RH(M) outlet connection. Licensed HVAC, welding, and industrial gas technicians install this regulator in oxygen supply systems for cutting, welding, and fabrication operations.

This regulator is suited for industrial and general fabrication, light fabrication, structural steel fabrication, and repair and maintenance applications. Its compact layout places built-in gauges recessed into the body for physical protection. The 1.5-inch UL listed gauges feature a 4000 psig inlet range and a 200 psig outlet range with enhanced graphics for easy reading. Color-coded knobs allow quick gas identification, and the side-mounted knob supports natural, safe hand positioning during pressure adjustment. The high-impact ABS gauge guard adds a further layer of protection in demanding shop environments.

Key Features

• Forged brass body with zinc-aluminum housing caps for strength and corrosion resistance
• 0.488 Cv flow coefficient delivers uniform flow across varying cylinder pressures
• External self-reseating relief valve with stem-type seat mechanism for system integrity
• Nickel-plated bronze sintered inlet filter protects internal components from contamination
• Color-coded SLAM impact-absorbing safety knob protects regulator internals on single-point impact
• Recessed built-in gauges with high-impact ABS gauge guard resist job-site damage
• Meets or exceeds CGA E-4, UL 252, and ASTM G-175 promoted ignition test standards

Compatibility

Designed as an OEM-style two-stage high-capacity oxygen regulator for use with standard 540 CGA oxygen cylinder valves in industrial and light fabrication supply systems.

Installation Notes

Installation and adjustment of high-pressure oxygen regulators should be performed by a qualified technician familiar with compressed gas handling procedures. Always shut off the cylinder valve and bleed the regulator before connecting or disconnecting. Keep all fittings, tools, and the regulator free of oil, grease, and combustible contaminants, as oxygen service demands strict cleanliness. Follow CGA and applicable local codes governing compressed gas equipment installation and use.

Technical Specifications

• Outlet Pressure Range: 5-125 psig
• Maximum Inlet Pressure: 3000 psig
• Inlet Connection: 540 CGA
• Outlet Connection: 9/16 inch-18 RH(M)
• Cv Flow Coefficient: 0.488
• Diaphragm Size: 2.7 inches, fabric-reinforced neoprene
• Gauge Size: 1.5 inches, UL listed
• Inlet Gauge Range: 4000 psig
• Outlet Gauge Range: 200 psig
• Body Material: Forged brass
• Dimensions: 6.85 inches x 4.72 inches x 4.4 inches
• Weight: 5.64 pounds
• Certifications: CGA E-4, UL 252, ASTM G-175
• Warranty: Five years

Standard Information

• Brand: VICTOR
• Manufacturer Part Number: 0781-5218