Our Flow Control Equipment

Stopper Specialists offer a comprehensive range of pipe stopper products designed to effectively control the flow of water, in and out of pipes. Our extensive range includes blank and bypass stoppers to suit all your needs. We also offer a range of compressors used to inflate stoppers, as well as stirrup pumps, air cylinders and inflation controllers.

At Stopper Specialists, we pride ourselves on providing durable and reliable Flow Control equipment. Discover more about our flow control solutions by exploring the products below.

Blank Cone Pipe Stopper

Blank Cone Pipe Stopper

Different in construction to a conventional cylindrical inflatable stopper, the Cone Pipe Stopper is far more versatile.

Bypass Cone Pipe Stopper

Bypass Cone Pipe Stopper

The Bypass Cone Pipe Stopper is ideal for when stopping the flow is not possible in a pipe, drain or sewer. This durable bypass stopper allows you to drain off the water through a PVC type pipe used in the middle of the stopper.

Megaplug

Megaplug

The Megaplug is a special inflatable plug for pipe diameters larger than 580mm.

Cylindrical Stoppers

Cylindrical Stoppers

Ideal for air testing, water testing and flow stopping. Maximum diameter 440mm.

Bypass Stoppers

Bypass Stoppers

Suited to create a diversion or bypass when working in the pipe line.

Pronal Cylindrical Stoppers

Pronal Cylindrical Stoppers

The Pronal Inflatable Cylindrical Stoppers are available in sizes ranging from 100 - 1200mm.

Pronal Bypass Stoppers

Pronal Bypass Stoppers

Ideal for flow control (blanking off and bypassing) or air testing. Stoppers must be fully inserted into the pipe prior to inflation and must not be used in pipework within open excavations or unrestrained pipework. All pipes must be anchored before pressure testing.

Vetter Inflatable 1.5 Bar

Vetter Inflatable 1.5 Bar

Whether you need to carry out air testing, water testing, flow stopping, fluming or over-pumping, Vetter expandable cylindrical stoppers are an effective and convenient solution.

Vetter Inflatable 2.5 Bar

Vetter Inflatable 2.5 Bar

Available as blank or test plugs, the oil and acid resistant rubber protects against aggressive fluids. Stoppers must be fully inserted into the pipe prior to inflation and must not be used in pipework within open excavations or unrestrained pipework. All pipes must be anchored before pressure testing

High Pressure Pipe Stoppers

High Pressure Pipe Stoppers

If the standard sealing pipe can not be used due to high back pressure, then these high pressure pipe stoppers are recommended. Higher operational pressure is ensured by the special Kevlar reinforcement used in all the stoppers. The diameter of the standard product line ranges from 50mm - 600mm. Stoppers must be fully inserted into the pipe prior to inflation and must not be used in pipework within open excavations or unrestrained pipework. All pipes must be anchored before pressure testing.

Pronal High Pressure Stoppers

Pronal High Pressure Stoppers

PRONAL “OHP & OPV” stoppers can be used for the closure of lines of all types. This range of stoppers allows the execution of leak-tightness controls, and the conduct of operational maintenance, both onshore & offshore. Pronal Stoppers can also be used for the flotation of jackets or pipes. They can also be applied for the execution of weld tests, repairs, or the replacement of valves in pipes.

Multilock Stoppers

Multilock Stoppers

When adequately braced stoppers will withstand the following head of water: Sizes up to and including 600mm - 3 metres head Sizes over 600mm - 1 metre head.

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FAQs

What are Cherne Test Plugs used for?

Cherne Test Plugs can isolate pipe sections, manage flow, or carry out testing on sewer and pipeline systems. The appropriate configuration depends on the task and site requirements.


What are Cherne Blank Plugs used for?

Cherne Blank Plugs provide temporary isolation within sewer systems, allowing contractors to carry out work on an isolated section of pipe. They can be used where flow needs to be stopped during maintenance, repair or testing.


How do you choose the right Cherne Blank Plug?

The correct plug depends on factors such as the pipe diameter, required back pressure, application and site conditions. Check that the plug suits the intended application and stays within its specified operating limits.


What is the difference between blocking and flow-through test plugs?

A blocking plug stops flow and isolates a section of pipe. A flow-through plug allows controlled flow to continue while work or testing takes place. The right configuration depends on whether you need complete isolation or continued flow.


How do I choose the right Cherne Test Plug?

Consider the pipe diameter, application, required back pressure and whether you need to block or maintain flow through the pipe completely. Also consider site access and available inflation equipment when selecting a plug.


How much back pressure can a Cherne Blank Plug withstand?

The maximum specified back pressure is 0.8 bar. Do not use the plug beyond its rated limits.


How are Cherne Blank Plugs inflated?

Cherne Blank Plugs are available with different valve configurations, including quick disconnect, Schrader Valve and barbed fittings. The appropriate option depends on the plug specification and the inflation equipment available.


Can Cherne Test Plugs be used for pipe testing?

Yes. Testing configurations are available for applications where a section of pipe needs to be isolated during testing. Select the plug according to the pipe and testing requirements.


What is the maximum back pressure for a Cherne Test Plug?

The maximum specified back pressure is 0.8 bar. Use the plug only within its rated limits and under suitable site conditions.


What temperature can Cherne Blank Plugs be used in?

The specified temperature range is -25°C to 65°C.


Can Cherne Blank Plugs be used in both sanitary and storm sewer systems?

Yes. They are suitable for applications in both sanitary and storm sewer systems, provided the plug is correctly selected for the pipe and operating conditions.


What inflation connections are available?

Type 26 Female QRC are standard to suit our inflation hoses and inflation equipment.


Can Cherne Test Plugs be used where access is restricted?

Their compact construction makes them suitable for applications with limited working space or access. The plug still needs to be correctly selected for the pipe and application.


What should I check before using a sewer plug?

Check that the plug is suitable for the pipe diameter, application and expected back pressure. Inspect the plug and fittings before use and ensure it is inflated and secured in accordance with the manufacturer's instructions.


What should I check before installing a Cherne Test Plug?

Check that the plug is suitable for the pipe diameter, application and expected back pressure. Also inspect the plug, fittings, and surrounding pipe before use, and install it in accordance with the manufacturer's instructions.