OSMA Ultrarib - Ultra Reliable, Ultra Efficent And Ultra Secure

Wavin, the UK’s leading manufacturer and supplier of plumbing, rainwater and drainage systems continues to meet the rigorous demands of the UK gravity sewer industry with OSMA UltraRib. With a proven track record of over 25 years, OSMA UltraRib is still the number one choice for plastic sewer systems for installers and specifiers.


OSMA UltraRib is specified by contractors, engineers and developers across the UK who rely on Wavin for availability, performance and technical support. The numerous benefits of using OSMA UltraRib are the reason it is regarded as the ultimate choice for foul and surface water sewer systems – having a minimum design life in excess of 50 years, pipes kitemarked under BS EN 13746-3 and fittings which are third party approved (BBA).

“The OSMA UltraRib range provides a high quality and versatile plastic solution in a very competitive market,” said George Gray, Wavin Product Group Manager. “It is the only structured concentric external ribbed system that’s fully tested to exceed all the required standards.”


Synonymous with quality and reliability, OSMA UltraRib is a solid wall, external rib-reinforced pipe system – used for the transportation of foul and surface water drainage in adoptable and non-adoptable applications. Available in dimensions of 150mm, 225mm and 300mm, the system offers a comprehensive range of fittings for each diameter. Where appropriate, pipes and fittings are fully socketed for security and ease of installation. The innovative design of the socket prevents accidentaldisplacementof the ‘O’ ring during installation. The resulting joint also provides a flush fitbetween the internal bore of the pipe and the fitting – thus increasing its hydraulic performance and reducing any potential for blockages. Easy to handle and install on site – without the need for heavy plant machinery – the OSMA UltraRib system enables major groundworks to be carried out more efficiently and safely. It’s simple to cut, the pipe doesn’t need chamfering and its high performance sealing ring creates a watertight joint that’s impossible to displace during installation.

As the leading brand in plastic drainage and rainwater systems, the OSMA range is furthered strengthened by the OSMA UltraRib system. This will ensure Wavin continues to lead the way with a market leading product range, system compatibility and technical support – helping the OSMA brand to remain the leading name in plastic drainage and rainwater systems.

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