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Double Clevis Swivel for limited rotational applications. Used in winching applications to avoid damage to the cable or product pipe as a result of twisting winch wires. The Double Clevis Swivels feature a large clevis thereby avoiding the need for ‘D’ shackles and enabling direct connection onto Pipe Equipment Towing Heads. They are used in pipe bursting operations to ease rod and blade removals in two way bursts. -
Nylon Air Bags are designed to go through restricted openings measuring about 1/4 of the nominal pipe diameter or less.
Flowstop Ltd are now part of the ALH/ Pipe Equipment Specialists group. Online sales and enquiries will now go through Pipe Equipment Specialists.- Manufcature from natural rubber bladder and covered in Grey proofed nylon.
- Produced in cylindrical and spherical shapes.
- Standard range 1"-15" (25mm-375mm). Available with Schrader valve as standard, or brass cock as an extra
- Standard range 16"-96" (400mm-2400mm).Supplied complete with ball valve.
- We can also supply a Nylon Bag c/w Centre Hole
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Designed specifically for Directional Drilling to prevent the ingress of drilling fluid in the pipe. Available in the size range 32mm up to 500mm. Please contact us for any size not shown in the options below. -
Can be used to seal or test all types of pipe from 35mm up to 1200mm. 1.5 bar and 2.5 bar models available. The Pipe Equipment Specialists’ range of Inflatable Pipe Stoppers can be used to seal and test all type of pipes from 35mm up to 1200mm. Two models are available – Blank and Test. Two inflation pressures – 1.5 bar and 2.5 bar. Allowable Backpressure (Test Pressure) is equal to 50% of the Inflation Pressure.** Large expansion range. Lightweight – most sizes can be installed by one person. Can be supplied with any length of inflation hose. ** Maximum inflation & back pressure figures are for stoppers fully inserted into the pipe and mechanically braced against slippage. An Inflation assembly, complete with pressure relief and pressure gauge, suitable for use with an on site compressor, can be supplied separately. A Heavy Duty Hand Pump is also available. -
For pressure testing and temporary sealing of gas, water, oil and sewerage pipes made of steel, cast iron, clay, plastic and concrete. For maximum allowable back pressures for each size of plug, please see attached the Datasheet in the document section. Please note that plugs must be suitably braced when applying any back pressure, in order to prevent the risk of accident. -
GIS E4 Gas Bag from Pipe Equipment Specialists
The GIS E4 gas bag is designed to pass through restricted openings measuring about 1/4 of the nominal pipe diameter or less.
Manufactured by our sister company Flowstop, with a strong 4oz nylon outer cover and a flexible backbone, they are highly durable and specifically designed for gas flow-stopping applications.
Available in cylindrical and spherical shapes.
- Stocked range: 3" - 12" (75mm - 300mm) – Conforms to GIS/E4 specification, available with UNF thread.
- Larger range: 13" - 36" (325mm - 900mm) – Manufactured in accordance with GIS/E4 but not tested and approved to the standard. Available with UNF thread.
- Made-to-order fittings: BSP and NPT thread options are available upon request.
PLEASE CONTACT US if you require additional hose length, an alternative brass tap fitting, or weight details for specific sizes.
Flowstop Ltd is now part of the ALH/Pipe Equipment Specialists group. Online sales and enquiries will now be managed through Pipe Equipment Specialists.
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Foam Pigs are used to remove dust or fluids from all pipe materials. They are generally pushed through a pipe using air or water pressure, although they can be supplied with a facility to allow them to be pulled through a pipe. Available in the size range 10mm to 1200mm. The prices online are for our basic soft foam pigs (1.5 lbs/cuft). For any bespoke pig or harder density versions, please contact our sales team. -
The Eesiseel range of inflatable stoppers are designed for use where there is access to the full pipe bore: Eesiseel stoppers give the following benefits:
Flowstop Ltd are now part of the ALH/ Pipe Equipment Specialists group. Online sales and enquiries will now go through Pipe Equipment Specialists.- All pipe sizes from 1.9"-12.6" (48mm-320mm) can be sealed with just five Eesiseel Stoppers.
- Easy to achieve a good seal.
- Easy to inflate through a self-sealing car-type Schrader valve or brass cock.
- Very easy to clean.
- Robust and durable: will last a long time when properly cared-for.
- resistant to a large number of chemicals
- We have a 4″ (100mm) stopper with a 1/2″ (12.7mm) i/d tube through the centre of the bag, used for pressure testing. Other sizes can be manufactured upon request
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Canvas air bags are designed to go through restricted openings measuring about 1/4 of the nominal pipe diameter or less. Manufactured from natural rubber bladder covered in canvas.- Produced in cylindrical and spherical shapes.
- Standard range 1"-15" (25mm-375mm). Available with Schrader valve as standard or a brass cock as an extra.
- Larger range 16"-96" (400mm-2400mm). Come complete with ball valve.
