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The TWECO 1520-1130 is a standard-duty brass gas diffuser designed for use with MIG welding guns rated up to 250 amps. Machined from 360 brass alloy bar stock, this diffuser delivers consistent dimensional stability and reliable electrical conductivity across light to medium duty welding applications. It measures 1.92 inches in overall length and features an M11 x 1.5-6G male thread with four 0.094-inch gas ports for even shielding gas distribution. The part number is roll-stamped on the external surface for fast identification in the field. Sold in a pack of five.
This gas diffuser is engineered for the Tweco 11 Series and Tweco Spray Master 250 A MIG gun platforms. It is also compatible with Tweco Eliminator front-end consumable systems. The metal retention ring holds slip-on style nozzle assemblies securely in position during the welding process, making this diffuser well suited for production welding environments where consistent front-end performance is required across light to medium duty applications.
Compatible with Tweco 11 Series MIG guns, Tweco Spray Master 250 A MIG gun series, and Tweco Eliminator front-end consumable systems. Designed for use with slip-on style nozzle assemblies.
Installation and replacement should be performed by a qualified welding technician. Disconnect and de-energize the MIG gun from the power source before servicing any front-end consumables. Thread the diffuser onto the conductor tube by hand first to avoid cross-threading, then snug with appropriate tooling. Inspect gas ports for blockage or spatter buildup at each consumable change to maintain proper shielding gas coverage.
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