Blocking plugs

Benefits

Made for temporary pipe closure
Blocking plugs are designed to temporarily close off a section of pipe during inspection, repair, cleaning, or other work where flow needs to be stopped.

They are used to seal the pipe, rather than test the line or move fluid through a by-pass, making them a practical option where temporary closure is the main requirement.

Strong grip inside the pipe
These plugs grip the pipe at low pressure before reaching higher friction at working pressure. This helps support a secure fit once the plug is correctly positioned and inflated.

The correct size, pressure rating, and site conditions should always be checked before use, especially where back pressure is present.

Wide diameter range
BurrowTech blocking plugs are available for a wide range of pipe diameters, from smaller lines through to larger infrastructure applications.

Before selecting a plug, crews should check the diameter range, deflated dimensions, back pressure rating, and approximate weight to confirm it is suitable for the job.

Durable rubber and fabric construction
The plugs are made from vulcanised SBR and NR rubber with high-strength fabrics. This supports durability and reliable performance during temporary blocking work.

They are also suitable for use across a broad temperature range, from -30°C to +70°C.

Optional NBR rubber for specialised use
Selected blocking plugs can be produced with NBR rubber where resistance to gas, petroleum, and derivatives is needed.

Material compatibility should always be checked before use, especially where pipe contents may affect the rubber or plug performance.

Practical details for field work
Blocking plugs include connection fittings and technical labels to help crews identify and use the product correctly.

Larger plugs may require planning around transport, lifting, access, and placement, so dimensions and weight should be checked before work begins.

Category: Pipe plugs

Description
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Description

BurrowTech supplies blocking plugs for temporary pipeline closure across New Zealand, and selling in more than 47 countries across the globe. These plugs are used when a pipe needs to be sealed for a short period during maintenance, repair, inspection, or other underground infrastructure work.

Unlike pipe test plugs, blocking plugs are not focused on by-pass flow or fluid evacuation. Their main role is to create a temporary closure within the pipeline, helping crews control the work area while the job is carried out.

BurrowTech blocking plugs are made from vulcanised SBR and NR rubber with high-strength fabrics. They are designed to grip the pipe at low pressure and reach strong friction at working pressure, helping the plug stay secure when correctly sized and used within its rated conditions.

The range covers a wide spread of pipe diameters, from smaller lines through to larger pipeline applications. Selected plugs can also be produced with NBR rubber where resistance to gas, petroleum, and derivatives is required. Before use, crews should confirm the pipe size, working pressure, back pressure, plug dimensions, and access requirements.