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Model 79 Series, Full-Function Weld Heads
The new Model 79-4500

Model 79-3500

Model 79-6625
Shown mounted on 6" schedule 5 pipe

Model 79-2375
The Model 79-2375 weld head is the ideal solution for field installations and on-site repair.

The Arc Machines' Model 79 series weld heads are economical, easy to use, sturdy weld heads designed for precision orbital welding with or without filler wire of tube, pipe, and fittings. Each weld head features: Arc Voltage Control (AVC) for precise arc gap control, programmable oscillation (weaving) and a precision wire feeder and wire entry mechanics. All Model 79 weld heads operate using the GTAW (TIG) process and will accommodate a range of pipe sizes from 0.75" O.D. to 6.625" O.D. (19 to 170mm) and wall thicknesses up to 0.75" (19mm).

  • Precision orbital welding heads with or without filler wire of tube, pipe, and fittings.
  • Versatile and compatible with a variety of joint designs, such as “V” prep, “J” prep, socket and square butt.
  • Accommodates tube, pipe and fittings from .75” O.D. to 6.625” O.D. (19 - 170mm) with wall thicknesses up to .750”. (19mm)
  • Will weld materials ranging from carbon or stainless steels to exotic alloys including Hastelloy®, Inconel®, and Monel® as well as all other TIG weldable materials.
  • Compatible with Arc Machines’ Model 227, or 415 power supplies.


Weld Head
Model #
Tube / Pipe
O.D. Range
Dimensions
A * B C R
79-2375 0.750" - 2.375"
19mm - 61mm
4.50" *
114mm
16.25"
413mm
0.63"
16mm
3.43"
87mm
79-3500 1.00" - 3.50"
25mm - 90mm
4.50" *
114mm
19.25"
490mm
0.63"
16mm
4.25"
108mm
79-4500 1.90" - 4.50"
48mm - 114mm
4.50" *
114mm
19.25"
490mm
0.63"
16mm
5.25"
133mm
79-6625 2.00" - 6.625"
50mm - 170mm
4.50" *
114mm
19.25"
490mm
0.63"
16mm
6.31"
160mm
* with cross-seam "in" all the way

Specifications subject to change without notice.



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