HFT Pipestoppers® Spherical and Cylindrical Inflatable Stoppers

Overview

Tech Specs

FAQ

Where Access to the Job Site is Difficult

Huntingdon Fusion Techniques HFT® manufactures a range of Inflatable Stoppers for pipes and ducts, which are a quick and easy way to stop the flow of gas or liquid, stop the buildup of debris, and prevent the ingress of unwanted material or animals.

Will Even Pass Through Small Pipes!

The versatile Pipestoppers® Inflatable Stoppers can be inserted and retracted through small holes and then inflated to full size for stopping operations. They are used in a wide variety of industrial applications and are available in the following ranges:

Standard Inflatable Stoppers

Cylindrical Inflatable Stoppers

These stoppers will not invert (turn over) inside a pipe under pressure because they are longer than their diameter.

Spherical Inflatable Stoppers

These stoppers are used where the position of the stopper is not important. They can be put at any angle and still make a seal.

Key Features and Benefits

Common Applications

Debris stopping during machining operations
Leak testing of pipework systems in commercial, domestic, and industrial applications
Low-pressure hydrostatic tests
On-site thermoforming of bends in ducting and conduit materials
Fiber-optic construction projects
Debris and animal barriers for overnight protection of pipelines
Weld purging to isolate volumes in tanks, to minimise gas purging volumes
Plumbing operations

All Sizes and Shapes

HFT Pipestoppers® Cylindrical and Spherical Inflatable Stoppers are available from 1 to 96" (25 to 2440 mm) diameter. They are manufactured using a high-quality robust latex inner tube and polyurethane-impregnated nylon fabric outer cover. They are supplied with a length of flexible inflation hose and a sealing valve. Inflatable Stoppers are available with heat-resistant covers to protect them against high temperatures. All HFT Pipestoppers® Inflatable Pipe Stoppers are manufactured with a strong internal inflatable bag made to the required shape and covered in a waterproof sewn polyurethane-coated nylon for low friction and to prevent the production of static electricity or accidental sparking.

Heat Resistant Covers

Heat-resistant covers are available as an accessory for the Standard Cylindrical and Spherical Inflatable Stoppers range when exposed to temperatures of up to 300ºC (572ºF). These specially designed covers can endure high temperatures, protecting the Inflatable Stoppers and preventing them from being damaged or bursting. The covers are reusable without losing their heat-protecting properties.

HFT Pipestoppers® Heat Resistant Covers are manufactured to suit all sizes within the Standard Inflatable Stoppers range of 1 – 96” (25 to 2,440 mm). These covers are identical to those used on the chemical-resistant inflatable stopper PetroChem Stoppers.

Technical Specifications

Inflation Hose:

HFT® Pipestoppers® Inflatable Stoppers are supplied with an inflation hose fitted with a Schrader valve.

Hose Length

1 to 24" Inflatable Stoppers have a 1.3 m hose length, 8 mm ID, 14 mm OD, and are fitted with a standard Schrader valve.

Collapsible and Lightweight:

HFT Pipestoppers® Inflatable Stoppers are totally collapsible and lightweight, making them easy to handle on-site and ship worldwide.

Customization:

Each Inflatable Stopper is made specifically to suit the ambient conditions. Specials and Stoppers with through tubes are available as non-standard.

Accessories:

Foot pumps can be supplied where required.

Your Questions Answered

How do I know when to choose between a Mechanical and an Inflatable Stopper?

HFT Pipestoppers® Inflatable Stoppers can be inserted and retracted through holes smaller than the one to be sealed. They are less expensive than mechanical stoppers but are not as suitable for applications requiring the ruggedness and strength of a mechanical stopper.

How do I prevent the stoppers from being pushed out of the pipe during a pressure test?

It is common to brace the ends of pipes to prevent stoppers from sliding out. The Pipestoppers® Division of Huntingdon Fusion Techniques HFT® can provide further data.

Will your stoppers be suitable for use in petrochemical pipework with hydrocarbon liquids and gases present?

The HFT Pipestoppers® Division manufactures special Inflatable Stoppers for the petrochemical industry where long-term resistance to chemicals and/or petrochemical oils and vapors is necessary.

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HFT Pipestoppers® Spherical and Cylindrical Inflatable Stoppers

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CLIENT TESTIMONIALS

"The purge meters are second to none."

"I am a huge fan of Huntingdon products and have talked to others over the years about using them. The purge meters are second to none. I own and use regularly my PurgEye 100 and my PurgEye 300. I think somewhere, I still have my original Argweld® MKV monitor, which sadly no longer powers up. I am a scarce breed because I have 3 degrees and a complete academic understanding of metallurgy, but more importantly, welding science; I also have over 20 years of hands-on experience in welding on drill floors, firing lines, and vessel shops. I quite literally have a passion for old-fashioned welding! Excellent product, guys!"

Davina Urquhart
CITY COLLEGE AND SENIOR WELDING ENGINEER AT TRANSWELD SERVICES LTD

"One of the best, if not the best, residual oxygen detector instruments on the market."

"I believe the PurgEye to be one of the best if not the best, residual oxygen detector instruments on the market with its digital residual oxygen level LED display readouts measuring as low as 0.01% and its large, user-friendly viewing screen making it easier for me to read. I also believe the PurgEye has great accuracy in residual oxygen, with speedy measurements displayed within seconds. The PurgEye is a far cry from the old school homemade 'use a cigarette lighter' to check purge gas flow system."

Construction and Maintenance
PIPING SOLUTIONS PTY LTD, AUSTRALIA

"Purge monitors are a necessity."

"I can personally vouch for purge monitors. When working with medium to large-diameter exotic pipework, they can prevent you from having a terrible day! I've only used the older model, which was a godsend. Anyone, from the welder who has had to carry out weld repairs due to root weld oxidation (or coking) on such materials, to the directors facing an expensive bill for re-work and possible tarnished company reputation, to the client with their project now running behind schedule - knows exactly what I mean. Purge monitors are a necessity."

Colin Sherriffs
WELDING AND FABRICATION INSTRUCTOR/ASSESSOR AT ITCA LTD

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