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Weld purge dams from Huntingdon Fusion Techniques HFT designed for dished ends and short pipes
- February 12, 2018
- Product Release
- Welding
Huntingdon Fusion Techniques HFT® has created a series of weld purge dams, using low-vapor-pressure materials that seal tightly around the circumference of the volume to be purged.
Available for pipe diameters from 6 to 88 in., the single-ended inflatable weld purge dams help welders achieve low oxygen readings in the fastest possible time with the minimal use of argon gas, the company states.
They are fitted with a dual inflation and purge hose, an additional purge gas hose, and an exhaust that can be connected to one of the Weld Purge Monitors®. The additional purge gas hose is suitable for introducing extra purge gas into the weld zone at any time to cool welds to meet interpass temperature specifications, or to provide more inert gas in titanium, zirconium, and special stainless applications needing a guaranteed zero-color weld.
Once the dam is inflated with purge gas and seals around the internal circumference of the pipe, the excess inert purge gas spills out and purges the space around the weld joint. The oxygen then is released through a series of venting exhausts on the dam.
Huntingdon Fusion Techniques HFTwww.huntingdonfusion.comsubscribe now
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