GTAW and PAW Gas Shielding Devices

Improve your Shielding Protection on All Alloys for Better Quality Welds

  High precision gas auxiliary and trailing shields for the most demanding applications

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PWT offers a product line of sophisticated gas auxiliary and trailing shields, or trailing cups, that dramatically improve the performance of a standard GTAW/PAW torch. The devices incorporate PWT's patented technology for modifying the inert gas pressure and flow from a single source (entering the standard torch) into efficient multiple shielding paths.

Our gas shields can be used in aerospace, semiconductor, vacuum, medical, nuclear, food/beverage processing, oil exploration, and other industries where absolute inert gas coverage is required. Our gas auxiliary and trailing shields are an excellent choice for welding all alloys such as iron, nickel, cobalt, and titanium base alloys.

The Ultimate Shield® gas auxiliary/trailing shields are state-of-the-art gas shielding systems designed to interface with industry common machine or manual gas tungsten arc welding torches. The auxiliary shields and trail shields are supplied with only one source of argon, that coming into the welding torch. No secondary tube is utilized to supply inert gas to the shields. The success of the devices is attributed to the optimum distribution of gas and the correct gas velocity ratios between the multiple gas paths due to PWT's unique gas metering technology.

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• Features (opens in new window)

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  Ultimate Shield® Gas Trailing Shield (P/N 430301)
  The Ultimate Shield® gas trailer provides an effective secondary gas curtain around the primary gas, which is directly over the molten pool. This secondary system prevents air from disturbing the primary gas. The trailing system supplies inert gas over the heat affected area as the hot metal traverses out of the primary and secondary systems without any interruption of gas coverage between the systems.
   
   
• Ultimate Shield® Gas Auxiliary Shields (P/N's 430311 & 430312)
  The auxiliary shields provide several effective secondary gas curtains around the primary gas, which is directly over the molten pool.
   

  (select to see larger image)	P/N 430311 Our larger auxiliary shield has three secondary systems (inner, central, & outer) providing maximum shielding protection to the weld and a large effective coverage area.		(select to see larger image   of 430311 cross-section)
  (select to see larger image)	P/N 430312 This unit, with two secondary systems (inner & outer), is smaller and lighter in weight than P/N 430311.

  
   
• Micro-Plasma Gas Auxiliary Shields
  

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  PWT's micro-plasma welding torch gas auxiliary shields are designed to interface with industry common manual or machine M-PAW torches. The design is similar to their GTAW cousins. Precise machining allows them to fit over and seal to the M-PAW torch copper nozzle.

  
   
   
• Plasma Gas Trailing Shields   
  

  PWT's latest family of gas trailing shields interface with the Thermal Arc PAW torches.

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• Special/Custom Shields

  PWT also offers special or custom gas trail cups to meet your unique needs.       Please request a quotation for your specific application.
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