There is a large variety of pipe plugging and blocking requirements in the oil and gas Industry, including repair work, leak testing, weld purging and debris stopping. During operations, a major concern is the entry of debris into pipes.
Huntingdon Fusion Techniques’ (HFT®) Pipestoppers® division designs and manufactures a range of low cost, lightweight inflatable stoppers for pipes of up to 120 in. dia. These also prevent the entry of debris into pipes.
HFT’s inflatable stoppers are available in cylindrical and spherical formats. the Cylindrical stoppers are recommended for straight pipes, while spherical versions are more appropriate for bends.
Where there are fluids inside pipes that need to be retained by a stopper, it is common to use plugs that are made of aluminum, steel or rubber. In cases where the fluid is aggressive, nitrile, silicon or Viton rubbers can replace standard natural rubber seals.
For larger diameter pipes, aluminum stoppers are manufactured up to 36 in. dia. and steel plugs up to 72 in. dia. After that, it is necessary to consider inflatable stoppers that are available up to 120 in. dia. and greater.
Ron Sewell, Chairman for HFT, commented: “For pipe diameters of 36 in. and over, not all applications require expensive and very robust, heavy rubber plugs, nor is it always necessary to use mechanical plugs which are also heavy and may be difficult to manipulate.”
“Where there is little backpressure and the absence of corrosive petrochemical fluid, lightweight inflatable stoppers are a great solution. They are light in weight, which makes them easy to manipulate and inexpensive to ship and because of their low cost, it is easy to keep all sizes in stock and ship them the very same day.”
Read the article online at: https://www.worldpipelines.com/product-news/16032017/hft-welcomes-pipeline-stoppers/