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PURGE EQUIPMENT
The ARGWELD®
'Purge Bladder System' has a number of distinct advantages leading to big
cost savings.
- Uses less inert gas
The volume to be purged is localized. For a typical pipe run, the
volume of gas used is less than 2% of that required for a conventional
purge.
- Faster
The system is very quick and easy to install. It can be positioned
accurately and the bladders inflate instantly. The purging time is a
fraction of that required to purge by conventional methods.
- Easy to use
'Purge Bladders' greatly simplify the process of inert gas purging.
- Training is minimal
leading to bright, shiny, coke and oxide-free welds very quickly.
- Improved quality of weld
The process involved is highly reliable. It gives regular, controlled
high quality results.
- Fast payback
The ARGWELD®
'Purge Bladder System' pays for itself in just a few welds.
High quality circumferential butt welding of pipe
to pipe and pipe to fitting requires inert gas to be used inside the bore
to prevent oxidation and notching of the root penetration weld bead.
The best system devised for this is the ARGWELD® "Purge
Bladder System". It is quick, reliable and easy to use. The volume of
purging required is kept small, resulting in significant savings in both
time and the volume of inert gas used.
- The ARGWELD®
"Purge Bladders" are based on a simple idea. Two protected bladders are
connected by a spinal tube.
- The tube carries the gas to inflate the
bladders and the release valve to purge the space between them.
- The system is inserted into the bore with one
bladder either side of the weld joint.
- The bladders are inflated to form a seal, after
which the pressure in the system opens the purge valve, the inert gas is
then fed into the space between the bladders expelling the air.
- Welding can then be carried out, the inert gas
ensuring a clean even penetration bead.
- Afterwards, the bladders are deflated and the
device easily removed.
This uniquely designed system means that only one inlet is
required for both bladder inflation and introduction of the purge gas.
The relief valve can be set to work at any desired flow up to 20
liters/minute and can be set to inflate the bladders and purge the
interspaces simultaneously every time.
For More Information
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