Internal Purging Preventing System

The Purge Preventing Systems in the range supplied by Enginova Impex is designed around the principle of using 2 silicon purging tubes to create a seal either side of the weld, just far enough away from the weld not to be affected by heat but close enough to the joint to provide the fastest weld purge time. Once ready to start purging, the system is inserted into the bore of the pipe using a reach rod to center the system to the weld gap.

When the gas flow is started, the silicon purging tube inflate and upon reaching the pre-set pressure, the valve releases the gas gently into the weld chamber to purge the inter space without turbulence. The Oxygen is removed from the weld chamber through the integral exhaust out line which provided in the system. Used in conjunction with Oxygen Monitors to indicate when the required low level of oxygen has been reached, welding can then commence, with the inert gas enabling the welder to produce an even oxidation free penetration weld bead. Afterwards, the silicon purging tubes are deflated simply by operating the valve in the panel box and taken back the preventing system easily.

• Available Size : 16” & above