The widest range of orbital welding equipment in the world The Model 79 series of high durability, “full function” weld heads are designed for fabrication shop and field process pipe welding applications. The Model 79 weld heads have a unique integral clamping system which gives each weld head the ability to adjust for different pipe and tubing diameters in seconds, thereby eliminating the requirement for specific sized guide rings. The M79 weld head series can accommodate a range of pipe sizes from 0.75” OD to 6.625” OD (19 mm to 170 mm) and wall thicknesses up to 0.75” (19 mm). FEATURES Arc Voltage Control (AVC) for precise arc gap control. Programmable oscillation and precision wire feeder with wire guide positioned. Integral clamping system with the ability to adjust for different pipe and tubing diameters in seconds. Clamping mechanism allows automatic centering of the weld head on the pipe. Water cooled torch for 100% Duty Cycle operation. Weld Head Model # 79-2375 Dimensions Tube/Pipe OD Range A B C R 0.75”-2.375” 19 mm - 61 mm 4.50” * 114 mm 16.25” 413 mm 0.63” 16 mm 3.43” 87 mm 79-3500 1.00” - 3.50” 25 mm - 90 mm 4.50” * 114 mm 19.25” 490 mm 0.63” 16 mm 4.25” 108 mm 79-4500 1.90” - 4.50” 48 mm - 114 mm 4.50” * 114 mm 19.25” 490 mm 0.63” 16 mm 5.25” 133 mm 79-6625 2.00” - 6.625” 50 mm - 170 mm 4.50” * 114 mm 19.25” 490 mm 0.63” 16 mm 6.31” 160 mm * with cross-seam “in” all the way

The Model 79 series is compatible with a variety of joint designs such as “J” prep and square butt, and will weld materials ranging from stainless or carbon steels to exotic alloys such as Hastelloy,™ Inconel,™ and Monel,™ as well as all other TIG weldable materials. Model 79-2375 Model 79-3500 Model 79-4500 Model 79-6625 0.75” - 2.375” (19 mm - 61 mm) 1.00” - 3.50” (25 mm - 90 mm) 1.90” - 4.50” (48 mm - 114 mm) 2.00” - 6.625” (50 mm - 170 mm) Wall Thickness up to 0.44” (11 mm) up to .044” (11 mm) up to 0.675” (17 mm) up to 0.75” (19 mm) Rotation Speed 0.1 - 5.0 RPM 0.05 - 2.0 RPM 0.05 - 2.0...