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Water Active :: products :: New, bigger MaxiFit solves OD mismatch problem

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New, bigger MaxiFit solves OD mismatch problem

Posted: Thursday 30th October 2008

Viking Johnson has extended its MaxiFit couplings range by adding a DN700 size – initially to overcome a difficulty encountered by Balfour Beatty during the cleaning and spray-lining of a 30-kilometre stretch of United Utilities' Hodder strategic trunk main.

"The main, which is cast iron and dates from the 1920s, is classified as 27" but in practice there is considerable variation in OD, so we were having difficulty connecting make-up pieces at cut-out points," explained project manager John Harrison.

"When we consulted Viking Johnson, they identified the 17mm tolerance of MaxiFit as the answer to our problem - and they were able to get the new DN700 size into production in time to meet our spray-lining schedule."

MaxiFit is suitable for use with steel, ductile iron, PVCu, cast iron and asbestos cement - in fact all conventional pipe materials except PE - and guaranteed for a working pressure of 16 bar.

The range includes standard, long-sleeve and stepped couplings, flange adaptors, and variants to suit customers' needs such as stainless steel bolts and Nitrile gaskets.

When it is bolted up, MaxiFit's exclusive ‘slide easy’ gasket provides maximum sealing pressure, even on the scored, pitted and corroded surfaces often encountered during repairs to older pipes.

All Viking Johnson products are designed and manufactured under quality management systems to BS EN ISO 9001 and have been tested in-house to the most exacting performance requirements of the UK Water Regulations Advisory Scheme (WRAS). They also conform to the American Water Works Association specification AWWA/ANSI C.219 for bolted couplings.

Telephone +44 (0)1462 443322
Fax +44 (0)1462 443311
Email info@vikingjohnson.com
Website www.vikingjohnson.com




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