Pipestoppers
 

Inflatable Stoppers - Cylindrical & Spherical

Inflatable Stoppers – Cylindrical and Spherical

The Pipestoppers® Division of Huntingdon Fusion Techniques HFT® design and manufacture a range of Standard Inflatable Stoppers, which come in two formats: Cylindrical and Spherical.

These versatil Standard Cylindrical and Spherical Inflatable Stoppers are used to service a wide variety of industrial applications and are an easy way to stop the flow of gas or liquid along a pipe or duct and to prevent the collection of debris or ingress of unwanted material or animals.

Our Standard Range of Standard Cylindrical and Spherical Inflatable Stoppers come in sizes 1 – 96" (25 to 2,440 mm).
and are manufactured with a high quality, strong internal bag, covered in waterproof sewn polyurethane coated nylon.

Each Stopper has a 1.3 m hose length, 10 mm ID, 12 mm OD and each are fitted with a standard Schrader Valve.

The recommended maximum temperature for the Standard Inflatable Stoppers to withstand is 90ºC (194ºF).  Inflation is carried out with a foot pump or air compressor.

The Standard Cylindrical and Spherical Inflatable Stoppers, when deflated, can be passed through relatively small holes in pipes. This allows them to be used for many applications where access to the job site is difficult.

Typical applications for the Standard Cylindrical and Spherical Inflatable Stoppers include:

  • Plumbing operations.
  • Low-pressure hydrostatic tests.
  • On-site thermoforming of bends in ducting and conduit materials.
  • Fibre-optic construction projects.
  • Concrete pipe joint testing.
  • Where only small entry ports are available.
  • Isolating opening from environmental contamination.
  • Sealing pipes and ducts during washing of factories and larger plants or products.
  • Emergency plugging or isolation of drainage points.
  • Debris and animal stopping.
  • Sealing in pipes and ducts that are not to size.
  • For difficult access voids or spaces.
  • Closing off pipes to be kept clean during maintenance.
  • Weld purging of closing welds where a small retrieval port is available.
  • Weld purging to isolate large volumes in tanks, so minimum volumes are left for argon / nitrogen purging.

The following are typical pressures, which the Stoppers can maintain a seal. Actual pressures will depend on various factors such as roughness of the contact surface and presence of lubricants. The Stopper material and alignment of the device can also have an effect on pressure.

Size Pressure (Psi)
1 – 6”
7 – 8”
9 – 10”
11 – 13”
14 – 17”
18 – 30”
31 – 35”
36 – 48”
49 – 59”
60 –96”
10
8
5
4
3
2
1.5
1
0.5
0.25

The maximum inflation pressure is prominently stamped on the casting.

All Standard Inflatable Stoppers conform to BS EN 752, 1610, 295 – Low Pressure Testing and Sealing of Pipes.

Optional foot pumps and pressure gauges are also available.

Inflatable Stoppers - Cylindrical & Spherical
Inflatable Stoppers - Cylindrical & Spherical
Inflatable Stoppers - Cylindrical & Spherical

Inflatable Stoppers - Cylindrical & Spherical

Heat Resistant Covers

Heat Resistant Covers are available as an accessory for the Standard Cylindrical and Spherical Inflatable Stoppers to suit all sizes within the range 1 – 96" (25 to 2,440 mm).

These specially designed robust Covers can endure high temperatures of up to 300ºC (572ºF), protecting the Inflatable Stopper, preventing them being damaged or bursting.

Heat Resistant Covers can be attached to the Stopper easily with the ties that come attached and are reusable time and time again, without losing their heat protecting properties.

Heat resistant stoppers.

Other Inflatable Stoppers in the Pipestoppers® Range include:

  • PetroChem Stoppers for higher temperatures or immersion in chemicals.
  • Pancake Stoppers for applications where insufficient length of pipe is available for the Standard Cylindrical and Spherical Stoppers.
  • Rubber Plugs for blocking pipes, tubes, dams, inlets, storage tanks and manholes.
  • Special Stoppers can be manufactured to allow for pressure testing or sealing of irregular shaped products.
 
 
 

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