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INSTRUCTIONS FOR USE
To ensure consistent results the following ‘set up’ and operational
procedures should be adhered to:
In use, the purge system will need a constant gas flow and pressure.
The system is fitted with a preset argon release valve to purge the
interspace after the dams have inflated. Gas flow rate and pressure
must be kept constant for good results.
Gas flow rate should be set to 5 - 8 L/min (11 - 17 CFH) and
maintained at that rate.
By localising a purge, traditional purging methods using high flow
rates are no longer appropriate.
Once a pipe is dammed with an Argweld
®
Pipe Weld Purging System
which localises a volume of pipe either side of the weld, the operator
can purge at a low flow rate 5 - 8 L/min - (11 - 17 CFH), achieving
fast purge times.
Any additional purge that might be needed can be achieved using a
secondary purge feed.
3 inlet/exhaust ports are integrated in the system for additional purge
gas and to vent any pressure build up.
