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High performance 4000 psi plastic sewer pipe now available

Posted: Tuesday 8th May 2007

The most significant development in structured wall sewer pipes in more than a decade is now available to installers across theUK.

Uponor’s Ultra Fortis is the world’s first structured solid wall thermoplastic sewer pipe which not only meets stringent Kitemark certification, but which also resists water jetting pressures of up to 4000 psi in accordance with Water Industry Specification (WIS) 4-35-01 – with independent third party confirmation from BSI to prove it.

Fortis is designed for use in non-pressure gravity sewer applications and available in three diameters – 150mm, 225mm and 300mm. All three sizes have achieved BSI Kitemark certification against WIS 4-35-01.

The industry’s highest performing structured solid wall sewer pipe ever developed in response to specific industry requirements, Fortis is easily identifiable, with its brown ribbed outer surface and blue inner. It is robust yet light – a three-metre length of 300mm diameter Ultra Fortis weighs less than 25kg – significantly reducing the requirement for mechanical handling. Impact resistance is 50 times better than clay pipe and with up to 58% fewer joints per system and longer pipe lengths is quicker and easier to install. Its smooth internal bore also provides excellent flow and self-cleansing characteristics.

Fortis was introduced and accepted by water companies in 2005, although Uponor needed to establish full UK manufacturing capability and obtain relevant approvals for UK manufactured product before making the system fully available for installations.

With these approvals, Fortis is the first and only structured wall thermoplastic sewer pipe to conform to the 4000 psi requirement set by Thames Water Utilities, Southern Water and Anglian Water. Southern Water’s Director of Operations, Andy Watson, stated:

“Our requirement for an easy to install yet high performance adoptable sewer system has been met by Ultra Fortis and we are happy to endorse and support the installation of this product.”

Thames Water’s Don Ridgers recently stated:

“Uponor listened to our requirements for a 4000 psi water jetting resistant plastic sewer system and we welcome the development of Ultra Fortis. We are happy to approve it for use in Thames Water.”

Uponor’s National Sales Manager Richard Hennessy said:

“We’re delighted to have developed a system that meets the requirements of these water companies. Fortis is an innovative product that will help silence those lobbying for the installation of traditional pipe materials, and will re-establish structured wall plastic pipe as the enlightened choice for all gravity sewer systems 300mm and below.”

For sales enquiries contact Burdens on 01293 872400. For technical enquiries contact Lawrence Richards on 01773 582377.

Or alternatively visit for more details about Uponor.

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