Use these purge dams and inflatable bladders to isolate and seal off the weld area so that the area can be filled with shielding gas to prevent pipe surfaces from oxidizing. This localized purging reduces consumption of shielding gas and speeds up the purging process, which helps improve the quality of the weld.
Once installed in a pipe or tube, these bladders can be inflated to form a seal for purging. Use the included valve to supply shielding gas to the area of the weld.
Make a custom purge dam that suits your needs. Just cut the paper to fit the area you wish to weld, position it in the pipe, and secure it with the tape. The paper and tape dissolve when the welded pipe is flushed with water, leaving no residue behind.
Water-Soluble Paper Roll
Water-Soluble Paper Sheet
Create a seal between the pipe and shielding gas using these cost-effective, pre-formed pipe purge dams. They install quickly into the pipe, and they dissolve when the welded pipe is flushed with water, leaving no residue.