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2. Pipe plug - Wikipedia

   en.wikipedia.org/wiki/Pipe_plug

   Pipe plugs are used with supplementary accessories such as air and water hoses, air and pressure control devices, gauges, adapters and chains depending on the type of the pipe plug and the process. Auxiliary equipment like compressors for inflating the pipe plugs, water tanks for filling the pipeline and pumps for some cases must be used.

3. List of inflatable manufactured goods - Wikipedia

   en.wikipedia.org/wiki/List_of_inflatable...

   An inflatable laser maze This is a non-comprehensive list of inflatable manufactured goods , as no such list could ever completely contain all items that regularly change. An inflatable [ 1 ] is an object that can typically be inflated with a gas , including air , hydrogen , helium and nitrogen .

4. Automobile auxiliary power outlet - Wikipedia

   en.wikipedia.org/wiki/Automobile_auxiliary_power...

   Products covered by the standard include cord assemblies of a plug that mates with the standard cigarette receptacle found in automobiles. 6-volt cigarette lighter receptacle and plug. Receptacle inside diameter: 21.34–21.46 mm (median 21.4 mm) Plug body diameter: 21.08–21.23 mm (median 21.155 mm) 12-volt cigarette lighter receptacle and ...

5. Weld purging - Wikipedia

   en.wikipedia.org/wiki/Weld_purging

   Inflatable pipe purging systems are the most commonly used, where two inflatable bags (known as dams) are connected by an inert gas tube about 20” (500 mm) in length with one dam placed either side of the weld. The space between the dams is filled with inert gas that flushes out the air.

6. Core plug - Wikipedia

   en.wikipedia.org/wiki/Core_plug

   The Welch plug is a type of core plug that is made from a thin disc of metal. The Welch plug is dome-shaped and inserted into the casting hole with the convex side facing outwards. [ 6 ] When installed by striking the Welch plug with a hammer, the dome collapses slightly, expanding it laterally to seal the hole.

7. Fusible plug - Wikipedia

   en.wikipedia.org/wiki/Fusible_plug

   A fusible plug operates as a safety valve when dangerous temperatures, rather than dangerous pressures, are reached in a closed vessel. In steam boilers the fusible plug is screwed into the crown sheet (the top plate) of the firebox, typically extending about 1 in (25 mm) into the water space above it. Its purpose is to act as a last-resort ...