Steel Pipe Stopper 200mm

Industrial-grade 200mm steel pipe stopper designed for sealing or testing 8-inch main lines, sewers, and large conduits. Featuring a rugged mechanical expansion design with a premium rubber perimeter seal and a central bypass, it ensures maximum stability under pressure.

Heavy Duty Zinc Plated Steel Frame: Built with a rugged steel central stem and plates that resist mechanical deformation and corrosion in damp trench environments.
Expandable Natural Rubber Perimeter Ring: Features a high-grip rubber sealing rim that expands uniformly against the inner pipe wall to form a gas and watertight block.
Threaded Steel Nominal Bypass Nipple: Outfitted with a central hollow one-inch thread and removable sealing cap to allow controlled water drainage or air testing connections.
Mechanical Wing Nut Locking Assembly: Employs a smooth twin-lip compression nut that tightens manually to compress the plates and expand the plug quickly without complex tool setups.

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FAQs

What are the main applications for a 200mm steel pipe stopper on site?

A 200mm steel pipe stopper is ideal for sealing, blanking, or pressure-testing larger 8-inch main drainage lines, culverts, and industrial sewer pipework.

How does a 200mm mechanical steel stopper create a secure seal?

Turning the central wing nut compresses a thick rubber ring between two zinc-plated steel plates, expanding the seal uniformly against the inner wall of the 200mm pipe.

Can a 200mm steel stopper be used for standard building regulation air tests?

Yes, bypass versions feature a threaded central outlet allowing easy connection to test nipples, hand pumps, and U-gauge manometers for official pressure testing.

Is the steel construction resistant to harsh site conditions and effluent?

The zinc-plated steel plates and heavy-duty rubber ring resist corrosion, rust, and exposure to chemicals, wastewater, and abrasive site grit.

What is the advantage of using a steel mechanical stopper over plastic or inflatable bags?

Steel stoppers offer superior mechanical strength and stability, providing a rigid, high-pressure seal that will not deflate or slip during demanding pipe tests.

Can I hire a 200mm steel pipe stopper for short-term drainage testing?

Yes, we carry a complete selection of 200mm steel mechanical stoppers within our nationwide hire fleet, fully inspected and ready for immediate delivery to your project.