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WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

RADNOR™ 1.25" 14 Series Gas Diffuser

Airgas Part #:RAD64002726

Manufacturer Part #:54A

$4.97 /Each
Package Size Options
$24.85 Pack 5 Each / Pack
$4,970.00 Case 1,000 Each / Case
Enter multiples of 5 Each

Item Details

  • RADNOR™ 1.25" Brass Gas Diffuser is suitable to use with 14 Series tips on up to 450 A Tweco® No. 3, Tweco® No. 4 and RADNOR™ MIG guns. Diffuser is designed in a way so it can be used with slip-on nozzle assemblies and made from 360-brass alloy bar stock that assures consistent dimensional stability. Light to medium duty welding applications can make use of this diffuser, which is sold as 5 per pack.


  • Easy identification - part no rolled stamped on the outside surface
  • Machined from 360 brass alloy bar stock to ensure consistent dimensional stability
  • Contains a conduit set screw used to hold the conduit liner in place
  • Recessed tips are generally used for higher heat applications where longer electrical stick-out is required, or in cases where the nozzle may touch the work piece (tack, spot, and stitch)
  • Flush Tips are generally used where a shorter electrical stick-out is used sometimes resulting in shorter/tighter arc lengths, this brings the tip closer to the work piece
  • Protruding Tips are generally used when welding open root pipe or any joint that requires the welder to get into a tight weld joint
  • However the down side to this is the chance of arcing the tip to the work piece, which could damage front end parts resulting in downtime needed to replace


  • Used in medium to heavy duty welding application up to 450 Amp
  • Use with 24A series nozzles only
  • Use with 34A nozzle insulator

Product Attributes

Consumables Type

» Gas Diffuser

MIG Gun Model

» RADNOR™ Pro 450


» 1.25"


» 14