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Severn receives butterfly valve technology patent

Published by , Senior Editor
Hydrocarbon Engineering,

A major innovation step for Severn Glocon Group’s Severn Leeds butterfly valve range has been recognised with a patent granted by the UK Intellectual Property Office.

The pioneering oblique cone technology (OCT®), developed for triple offset valves, plays a critical role in Severn’s reinvention of butterfly valves for control applications. The OCT triple offset is the first butterfly valve designed primarily for flow control, rather than isolation or shut-off.

Based on an ‘infinite circle’ geometry, the design offers full bore capability which improves flow performance and Cv as well as sealing capabilities. Traditional triple offset butterfly valve designs have an elliptical disc seal and bolted sealing elements, which hinder flow performance and ultimately shorten the expected lifespan of the valve.

Customers already using the OCT triple offset control valve include oil and gas, chemical and petrochemical, LNG and fertilizer manufacture organisations. Its design delivers processing benefits, as well as ensuring low maintenance and longevity. Furthermore, it can be custom-engineered to non-standard specifications and its solid disc can incorporate anti-cavitation and low-noise trims when required.

The valve is also suitable for the rigours of critical and severe service applications. It has passed fire safety and cryogenic testing, and can be used across a wide temperature range from -200°c to +800°c.

Severn’s Product Development Manager Mark Breese, said: “From the outset, our goal was to change the fundamental principles of what a butterfly valve can and can’t do […] We already knew the oblique cone technology offered major advantages, and its successful introduction to the market evidences this. It’s helped drive sustained growth for the Severn Leeds butterfly valve line and we now own a significant share of the global market for critical service control butterfly valves. Achieving the patent is a major milestone. It underlines the uniqueness of the technology and gives added credibility to our status as a valve engineering business at the forefront of innovation.”

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