Each coupling consists of a casing, a gasket and a lockpart.  The purpose of the casing is to house the gasket and to press it onto the pipe surface when the lockpart is closed.  The lockpart is designed to pull the two ends of the casing together circumferentially around the pipe.  In order to achieve this, the coupling is labelled clearly with a torque figure which should ensure that the gasket is compressed sufficiently against the pipe surface.

The gasket itself has sealing lips which press against the pipe surface and form lip seals.  The lip seals are designed to resist the internal pressure in the pipes.  As the pressure increases, the coupling is designed to seal more tightly against the pipe surface.

In the case of anchored couplings, such as the Axilock, two anchor rings are placed adjacent to, but separate from, the sealing mechanism.

As the lockpart is tightened the sealing lips are pressed against the pipe surface to form a seal.  At the same time the two anchor rings penetrate the rubber, bite into the two pipes and prevent them from pulling apart, whether by external loading or internal pressure.  The end seal is also pressed against the pipe surface, which protects both the anchor ring and the section of the pipe where the anchor rings have bitten from any possible external corrosion.

For enquires and sales, please call us on 01494 679500 (international callers dial +44 1494 679500) or send us an e mail at info@teekaycouplings.com