DWT PIPE PURGE SYSTEM WITH 200MM CONNECTION FOR 25-320MM(ID) PIPES
A purge bung set with an 200mm space between bungs suitable for pipes with an inner diameter of 25-320mm. The DWT pipe bungs are a complete unit, with bungs at either side, to purge an 200mm void. In fact, there are only a few components, two bungs one either side, a gas inlet, a gas outlet, a connecting axis, and a connection hose with a rectus nipple. A diffuser on the gas inlet makes for a laminar flow into the pipe or tube, to avoid turbulent gas flow. The outlet on the opposing bung allows atmospheric gases to be purged from the pipe.
The discs of the bung ends are UV- and temperature-resistant up to 320°C for up to one hour.
This design of gas diffuser provides an even flow of gas and prevents any gas turbulence behind the weld, thereby minimising the risk of oxygen in the welding chamber while, at the same time, achieving an extremely short purge time. These extremely short purge times result in valuable cost savings in gas and time and the weld seams are without temperature discoloration.
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Simple and effective pipe purging device. Short purge time, Heat resistant up to 320°C (max for 1 h), Airtight in all positions
Key Features
Efficient gas diffuser with high diffusion
The tool is one complete unit
Suitable for TIG, MIG/MAG and plasma
Why Back Purge
When welding, a shielding gas is used to protect the molten weld pool from the atmosphere. If welding a joint though, the shielding gas from the torch is not shielding the back of the weld. The rear of the weld can then allow entry of the air, creating contamination. This contamination can then lead to decreased weld strength and decreased anti corrosive properties within the solidified weld. By creating an oxygen-free environment on the backside of the weld, back purging prevents oxidation, maintains the inherent properties of the parent material, and ensures the longevity and reliability of welded components. Furthermore, effective back purging ensures that the welded joint retains its corrosion-resistant properties, making it suitable for applications where maintaining hygiene and preventing contamination is critical. Real world examples of where back purging is critical is in Stainless Steel car exhaust systems as well as sanitary pipework used to carry food or drink.