Standard Inflatable purge dam

Key Features

  • Inflatable purge dam for purging small bore pipe and tube
  • Available in sizes 50mm to 900mm (25mm increments)
  • Easily pushed or pulled into position
  • Pre-set purge valves
  • Lower gas volumes required resulting in cost savings
  • Shorter purge times reducing waiting time between welds
  • Easy to use Plug and Purge Technology
  • Luminous strip for easy centring at the pipe joint
  • Lightweight and collapsible for easy storage
  • Single point gas connection for inflation and purging.
  • Patented design
  • Available in standard, Oil resistant and heat resistant materials
  • Manufactured in the UK


This Inflatable Pipe Purge System makes an effective seal for purging pipework prior to welding. Once in position the bags inflate forming a tight seal inside the pipe. When inflated the pre-set purge valve will open, releasing inert gas into the weld area.

This system is a professional robust solution for purging of stainless steel, duplex and other alloy pipework resulting in shiny, oxide free weld roots.

With its “Plug and Purge Technology”, simply connect to a dedicated and regulated gas supply and choose any flow rate, up to 20 litres per minute, through the pre-set purge valve. Setup times are dramatically reduced.

The system only requires a single point connection to gas supply for both inflation and purging making it extremely simple to use.

When ready to weld, the system is easily pushed or pulled into position and aligned at the pipe joint using the luminous strip to locate the system centrally to the root gap. This prevents the system from being positioned incorrectly.

As the pipe/tube is only purged between the inflated dams, lower gas volumes are required resulting in cost and time savings.

The modular construction makes for easy storage and cost effective part replacement.

Available in a range of specialist fabrics including:-

Nylon Standard fabric
Nitrile Oil and Petro-Chemical resistant
Nomex Flame retardant/Heat resistant
Ceramic Fibre Insulated Heat resistant to 300 Degrees C


Sizes available:- 50mm – 900mm (25mm increments)
2” –  36”  (1″ increments)

Other sizes available on request

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