The Pipestoppers Division at Huntingdon Fusion Techniques HFT® has designed and manufactured a range of mechanical and inflatable Pipestoppers and Plugs for a variety of applications.

The Low Profile Stopper is available for applications where insufficient length of pipe is available for the regular Cylindrical or Spherical Inflatable Stopper. These stoppers are available in sizes 6 inches to 88 inches. According to the company, they provide excellent grip inside the pipe, with an effective airtight seal. 

Each Low Profile Stopper is fitted with a standard Schrader Valve connected to a 1.2m hose, is inflated using a foot pump or compressor, and is heat resistant up to 90ºC (194ºF). 

The Pipestoppers® Inflatable Stoppers range contains:

  • Cylindrical and Spherical Stoppers for stopping the flow of gas or liquid inside pipes and ducts are available up to 96 inches. For higher temperatures, these Inflatable Stoppers can also be manufactured with a heat resistant cover for temperatures up to 300ºC (572ºF). 
  • PetroChem® Stoppers are manufactured from high-grade latex and are used for stopping off pipes containing hydrocarbon gases and liquids. 
  • Inflatable Rubber Plugs offer a wide diameter range and are resistant to many chemicals and hydrocarbons. They can be used for higher-pressure applications.
  • The Pipestoppers® Division manufactures a range of Aluminum Mechanical Stoppers and Plugs for industrial plumbing operations, water drainage systems as well as offshore operations. These are negatively buoyant for sub-sea work and can be used in all kinds of pipes and other vessels where there are orifices to be sealed or blocked. 

The Pipestoppers® Division of HFT® also provide Pipe Freezing Systems that make ice plugs inside pipes, to stop the flow of liquids so that maintenance can be carried out on valves, etc. 

--Huntingdon Fusion Techniques HFT