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HFT Pipestoppers ® Product Lines

HFT Pipestoppers ® Product Lines
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HFT Pipestoppers ® Product Lines

Product catalog summary
Introduction
HFT Pipestoppers® specializes in manufacturing a wide range of pipe plugs and stoppers for non-welding applications. The company expanded its product line after acquiring Hiltlake in 1999, adding expertise in Nylon Purging Plugs and other pipe plugs. The product range includes Aluminium Plugs, Steel Plugs, Inflatable Stoppers, and Freeze Plug products like Qwik-Freezer™ and Accu-Freeze™.
Nylon Plugs
Nylon Plugs are versatile and used for weld testing, leak testing, and preventing ingress of unwanted materials. Made from injection-molded nylon and rubber rings, they provide airtight seals and are available in various sizes. They conform to ISO standards for low-pressure testing and sealing.
Aluminium and Steel Plugs
Aluminium Plugs are suitable for demanding applications, such as long immersion in water and higher temperatures. Steel Expanding Plugs offer robust solutions for various industrial needs.
Inflatable Stoppers
Available in cylindrical, spherical, and special shapes, these stoppers are ideal for maintenance and repair tasks where solid plugs are impractical.
Freeze Plug Products
The Qwik-Freezer™ and Accu-Freeze™ systems allow for pipe freezing using liquid CO2 and liquid nitrogen, respectively, enabling repairs without shutting down operations.
Test Plug Kits
HFT offers various test plug kits for automotive, commercial, and pool/spa applications, including a range of plug sizes and accessories for effective leak testing.
Technical Information
All plugs conform to ISO standards, with options for different rubber seals to resist chemicals and higher temperatures. Proper precautions are advised when using air or gases for leak testing.
Nylon Expanding Plugs
Lightweight, non-rusting, and easy to expand, these plugs can be dismantled for cleaning and part replacement. They feature hollow shafts for gas or liquid testing and come with a sealing cap.
Aluminium Pipe Plugs
Manufactured for pipe diameters from 1.5" to 36", these plugs are made from high-strength aluminium and conform to British Standard BS 8005.
Steel Expanding Plugs
Available in single and double versions, these plugs are used for pressure testing and stopping pipework from 1.5 inches upwards, conforming to British Standards BS 8005.
Inflatable Stoppers
Used to stop the flow of gas or liquid along a pipe or duct, available in spherical, cylindrical, and special shapes.
Technical Specifications
Includes detailed tables with size, pressure, and weight specifications for various plug types, as well as instructions for use and safety precautions.
Inflatable Stoppers
Designed for sealing pipes and ducts, these stoppers prevent the flow of gas or liquid, collect debris, and block unwanted material or animals from entering pipes.
Specifications
Inflatable stoppers range from 1” to 96” in diameter and are equipped with a Schrader valve for easy inflation and deflation.
Applications
Used in construction site drain testing, debris stopping during machining, leak testing, and low-pressure hydrostatic tests.
Product Variants
  • Cylindrical Inflatable Stoppers: Ideal for line pipe applications.
  • Square and Rectangular Inflatable Stoppers: Used for blocking chutes and protecting pipes.
  • Petrochemical Resistant Stoppers: Suitable for environments with hydrocarbons.
  • Inflatable Rubber Pipe Plugs: Cover a range from 35 to 2000 mm.
  • Low Profile Stoppers: Lightweight and easy to use.
Heat Resistant Covers
Protect inflatable stoppers from high temperatures up to 300ºC and are reusable.
Accu-Freeze™ System
Uses liquid nitrogen to create an ice plug in pipes, allowing for repairs without draining the system.
Overview of Freeze Systems
Technical details on Accu-Freeze™ and Qwik-Freezer™ systems, which allow for maintenance and repair of pipes without draining or shutting off the entire system.
Accu-Freeze™ System
  • Uses liquid nitrogen for ice plugs in pipes up to 12 inches in diameter.
  • Features adjustable insulating jackets and a digital controller.
  • Includes a comprehensive kit with safety equipment.
Qwik-Freezer™ System
  • Utilizes liquid CO₂ to form ice plugs in pipes.
  • Suitable for pipe sizes from 3/8" to 8" in diameter.
  • Standard kits include insulating jackets and safety gear.
Safety and Usage
  • Both systems require careful handling and adherence to safety protocols.
Applications
  • Ideal for pipe repair and modification without system drainage.
Contact Information
Contact details for worldwide offices and partners are provided for further information and support.
See more

Catalog excerpts

HFT Pipestoppers ® Product Lines-1

Short Form Catalogue HFT Pipestoppers® Product Lines

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HFT Pipestoppers ® Product Lines-2

HFT® purchased a company called Hiltlake in 1999. As they were supplying our Nylon Purging Plugs, when they come up for sale, we decided to purchase the whole company and the manufacturing plant. With the purchase, came considerable expertise in the manufacture and sale of other pipe plugs for non welding applications. Taking over the complete order book was quite a challenge, but we were very soon increasing sales by adding parts of our Inflatable Weld Purging Systems as Inflatable Pipestoppers. The manufacturing of Aluminium Plugs grew and grew to such an extent that we have a full time production...

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HFT Pipestoppers ® Product Lines-4

With y2'' BSP threaded waterway: Psi HFT Pipestoppers® Nylon Pipe Plugs are suitable for a myriad of applications. They are mostly used for weld testing, leak testing of pipework fabrications, weld purging or simply stopping to prevent the ingress of dirt, rodents and other unwanted material. However there are over 100 different applications for these plugs. These plugs are constructed from injection moulded nylon components and rubber rings. They have the advantages of being light, non rusting easy to expand and can be dismantled for cleaning purposes. The grade of nylon chosen is pure nylon...

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HFT Pipestoppers ® Product Lines-5

Aluminium Expanding Plugs Wingnut " BSP externally threaded shaft 1 2 Hollow Shaft To complete the HFT Pipestoppers ® range of Nylon Expanding Plugs we offer all sizes of Aluminium Plugs. These are provided in sizes from 3" (75 mm), for more arduous duties such as long immersion in water and higher temperature and are manufactured with ½", 1", 2" (12 mm, 25 mm, 50 mm) outlets. The standard seals are made from natural rubber and special rubber seals are available for chemical applications where greater resistance is required. Acetal Washer As can be seen from the sectioned view, the unique assembly...

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HFT Pipestoppers ® Product Lines-6

Automotive Test Plug KitT® contains: 2 x te" Hollow Stem 2 x %" Hollow 2 x 1" Hollow 2 x 1W Hollow 2 x 1te" Hollow Shaft of turns, condition of the inside of the pipe and the material. The Pipestoppers® division of Huntingdon Fusion Techniques HFT® manufactures plugs and kits of plugs for leak testing a variety of heat exchangers, particulary radiators and inter-coolers for cars and trucks. For leak testing automotive car radiators, ready made kits of plugs to make the sealing of all holes easy and fast for reliable leak testing. The plugs are made from nylon and natural rubber, so they will...

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HFT Pipestoppers ® Product Lines-7

For leak testing the commerical vehicle components with the large ports, a separate HFT Pipestoppers® kit is available with large size plugs. The Commerical Test Plug Kit contains: 2 x 2^" Hollow Shaft Plugs 2 x 5" Hollow Shaft Plugs 2 x 3" Hollow Shaft Plugs 2 x 6" Hollow Shaft Plugs 2 x 4" Hollow Shaft Plugs 4 x te" BSP Nipple Caps 4 x te" BSP Swivel Nut & Hose Tail Also included are 4 x 0.5" BSP nipple caps and 4 x 0.5" BSP swivel nuts and hose tail. Plus the rigid ABS plastic storage case with special cut to size foam *= results depend upon exact ID of the tube/pipe, number of turns, condition...

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HFT Pipestoppers ® Product Lines-8

Nylon Plugs Test Plug Kits Pool and Spa Test Plug Kit © HFT® For leak testing the typical pipework found in swimming pool and spa installations, the HFT Pipestoppers® division of Huntingdon Fusion Techniques HFT® manufactures ready made kits of plugs to make the sealing of all holes easy and fast for reliable leak testing. The plugs are made from nylon and natural rubber, so they will not corrode and seize up. They can also be totally dismantled for cleaning and part replacement. Each kit comprises: 1 off 4" U-gauge, bulb, Y union and hoses 2 off 1.5" Nylon Plugs 2 off 2" Nylon Plugs 2 off 3"...

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HFT Pipestoppers ® Product Lines-9

TECHNICAL INFORMATION As can be seen from the sectioned view, the unique assembly of the central waterway into the base plate via a snap taper fit and "0" ring seal provides a positive water and air tight joint. The provision of a friction reducing acetal copolymer thrust washer inserted between the wing nut and top plate facilitates easy expansion and release. HFT Pipestoppers® Nylon Plug Range Sizes available are for pipe bore sizes. These plugs conform to ISO Standards for low pressure testing and sealing of pipes. Notes: 1) They are slightly less efficient at the extreme higher limits of...

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HFT Pipestoppers ® Product Lines-10

UIFT DTDECTnDDEDC Leak Test and Isolation Plugs Huntingdon Fusion Techniques HFT® manufacture a large range of Aluminium Plugs to compliment the range of small diameter Nylon Plugs. They are manufactured for pipe diameters of 1.5" to 36", with te", 1" and 2" BSP outlets / vents / waterways / bypass as shown in the chart overleaf. The plugs have high strength, tough, cast aluminium plates. They are simple to install with their friction free washers enabling easy turning for the center wing nuts. They do not rust or seize up. The plugs are also used for total sealing of apertures in large tanks...

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HFT Pipestoppers ® Product Lines-11

Technical information Aluminium Pipe Plugs HFT Pipestoppers® Nylon Plugs ttttt tmt HFT This long established range of Nylon Pipe Plugs are manufactured from injection moulded components and rubber expansion rings. The sizes available are as follows:

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HFT Pipestoppers ® Product Lines-12

Steel Expanding Plugs - Single © HFT® For pressure testing and stopping all pipework from 1.5 inch (38 mm) upwards. They are manufactured with ½", 1” and 2" outlets as shown in the chart overleaf. To complete the HFT Pipestoppers® range of Nylon and Alumimium Expanding Plugs we offer all sizes of Steel Expanding Plugs. The standard seals are made from natural rubber and special rubber seals are available for chemical applications where greater resistance is required. These are provided in sizes from 1.5", for more arduous duties such as long immersion in water and higher temperature. All plugs...

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HFT Pipestoppers ® Product Lines-13

TECHNICAL INFORMATION STEEL EXPANDING PLUGS This long established range of Nylon Expanding Pipe Plugs are manufactured from injection moulded components and rubber expansion rings. ALUMINIUM EXPANDING PLUGS In addition to Steel Plugs our product range includes Aluminium Plugs. These are provided in sizes from 3" (75 mm), for where steel may not be the preferred material of manufacture. The standard seals are made from natural rubber and special rubber seals are available for chemical applications where greater resistance is required. The sizes available are as follows: - *= results depend upon...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.