Victor 0781-1457 Two Stage High Capacity Manifold Regulator

Product Description

The VICTOR 0781-1457 is a heavy-duty, two-stage, high-capacity manifold piston regulator from the SR 4MF Series, designed for high-pressure gas distribution applications. It delivers outlet pressures in the range of 50 to 750 psig and is rated for use with air, oxygen, inert gases, and hydrogen. The body is machined brass with a brass housing cap, and the unit uses a stainless steel diaphragm for reliable, consistent performance. A cartridge-type seat assembly with a PCTFE seat provides durable shutoff across a wide range of flow conditions. Licensed HVAC and industrial gas technicians are the typical installers for this class of equipment.

The 0781-1457 is suited for manifold installations in industrial, laboratory, and commercial settings where high flow and stable two-stage pressure regulation are required. It handles high-pressure cylinder banks supplying air, oxygen, inert gas, or hydrogen to downstream equipment. The inlet connection is 1 inch - 11.5 M NPS with a bronze sintered inlet filter, and the outlet connection is 1 inch - 11.5 F NPS fitted with a Delrin cap bushing for smooth pressure adjustment. This regulator is appropriate for both single-cylinder and multi-cylinder manifold setups.

Key Features

• Machined brass body and housing cap for durability in demanding service environments
• Two-stage piston-type actuation provides stable outlet pressure across varying inlet conditions
• Cartridge-type seat assembly with PCTFE seat accommodates a wide range of flow capacities
• Stainless steel diaphragm for corrosion resistance and long service life
• Bronze sintered inlet filter protects seat and downstream components from particulate contamination
• Delrin cap bushing on outlet connection enables smooth, precise pressure adjustment
• External adjustable relief valve on F and G range models; hydrogen models include ventable relief valves

Compatibility

The VICTOR 0781-1457 is part of the SR 4MF Series and is compatible with high-pressure air, oxygen, inert gas, and hydrogen supply systems. It is designed for manifold regulator applications requiring 50 to 750 psig delivery pressure.

Installation Notes

Installation should be performed by a qualified technician familiar with high-pressure gas systems and applicable codes. Always shut off the cylinder supply valve and relieve system pressure completely before connecting or removing a regulator. Inspect the inlet filter and all fittings prior to pressurization, and verify that the regulator is rated for the specific gas being used. Follow all local codes and the Compressed Gas Association guidelines for safe handling of high-pressure cylinders and manifold equipment.

Technical Specifications

• Regulator Type: Two Stage, High Capacity Manifold Piston
• Delivery Pressure Range: 50 to 750 psig
• Compatible Gases: Air, Oxygen, Inert Gas, Hydrogen
• Body Material: Machined Brass
• Diaphragm Material: Stainless Steel
• Seat Material: PCTFE
• Inlet Filter Material: Bronze Sintered
• Inlet Connection: 1 inch - 11.5 M NPS
• Outlet Connection: 1 inch - 11.5 F NPS
• Gauge Size: 2.5 inches Brass
• Length: 6.2 inches
• Width: 8.8 inches
• Height: 7.5 inches
• Weight: 5.5 pounds

Standard Information

• Brand: VICTOR
• Manufacturer Part Number: 0781-1457