Tweco 1520-1103 Mig Gas Diffuser 450A 14 Series

Product Description

The TWECO 1520-1103 is a brass gas diffuser engineered for use with Tweco No. 3 and No. 4 MIG gun series and eliminator front-end consumables. Machined from 360 brass alloy bar stock, it delivers consistent dimensional stability and reliable electrical conductivity in light to medium duty welding applications rated up to 450 amperes. The part number is roll-stamped on the external surface for easy field identification. A conduit set screw holds the conduit liner in place during operation. Sold in a pack of 5 units.

This gas diffuser is designed for slip-on nozzle assemblies and features external machined threads that allow the nozzle insulator to thread over and secure the slip-on nozzle during the welding process. It is suited for standard MIG welding operations in light to medium duty industrial environments. Typical applications include production welding, fabrication shops, and maintenance welding where a Tweco 14 Series front-end setup is in use. Its 450 A rating accommodates a broad range of common wire feed welding tasks.

Key Features

• Machined from 360 brass alloy bar stock for consistent dimensional stability and electrical conductivity
• External machined threads secure slip-on nozzle assemblies in place during welding
• Conduit set screw retains conduit liner during operation
• Part number roll-stamped on external surface for easy identification
• Rated up to 450 amperes for light to medium duty welding applications
• Sold as a pack of 5 units

Compatibility

Designed for use with Tweco No. 3 and No. 4 MIG gun series and eliminator front-end consumables using threaded or slip-on nozzle assemblies in the Tweco 14 Series configuration.

Installation Notes

Installation is performed by qualified welding technicians or MIG gun service personnel. Always power down and disconnect the welding power source before servicing front-end consumables. Thread the nozzle insulator over the diffuser carefully to avoid cross-threading the machined brass threads. Inspect the conduit liner and set screw seating before returning the gun to service.

Technical Specifications

• Amperage Rating: 450 amps
• Material: 360 brass alloy bar stock
• Length: 0.5 inches
• Width: 1.7 inches
• Height: 0.5 inches
• Weight: 0.06 pounds
• Sold As: Pack of 5
• UPC: 608246341705

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1520-1103