Purging Paper


Purging Paper / Water Soluble Paper / Dam Paper

Purging Paper or Water Soluble Paper is made of Sodium Carboxy Methyl Cellulose and wooden pulp. It dissolves rapidly and completely in most liquids including water. After Purging Paperwelding is complete, purge dams can be effortlessly dissolved and flushed out of the system with water when hydro testing; leaving no residue in the pipeline.

Water Soluble Paper or Purging Paper is available in a wide range of grades and sizes. It permits the construction of purge dams for literally any pipe diameter. The product is available in a variety of formats including sheets, rolls and pressure-sensitive tapes. Custom sizes and lengths are available as well. It is extremely easy to store, environmentally friendly and nontoxic.

Dissolvo® Purging paper or dam materials are strong enough to dam argon or helium and still maintain an oxygen free purge.

  1. Best, most economical purge dam material.
  2. Completely dissolves in water or steam.
  3. Simple and easy to use – right out of the box.
  4. Saves time and money.
  5. Effortless removal reduces labor expenses.
  6. Non-toxic, biodegradable, and eco-friendly.


Conventional purge dams such as inflatable rubber bladders, rubber gaskets, or cardboard discs traditionally must be placed far from the weld zone. Remote placement of the purge dams may require large amounts of purge gas to be introduced to fully displace the oxygen in the weld zone, making the use of the conventional purge dams cost prohibitive and cumbersome. Our Water Soluble Paper and Tape can be placed in close proximity to the weld zone, thereby using less inert gas.

Ease of Removal: 
Our purge dams can be effortlessly dissolved and flushed out of the system with water or steam; leaving no residue in the pipeline.

Time Saving:  
Because the dam is easy to remove, time is saved searching for inflatable bladders, especially in inaccessible pipe areas.

For more information, fill in the Enquiry Form.