Product News: Fluid & Gas Flow Equipment

Slurry Knife Gate Valves incorporate Linatex® sleeves.

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Press Release Summary:

April 12, 2012 - Featuring Linatex® wear-resistant elastomer sleeves, Isogate® WS Series Wafer-Style Valves are suitable for abrasive and corrosive environments. Units provide bubble-tight, bi-directional shut-off with no downstream leakage, and have no seat cavity for solids to accumulate and prevent full gate closure. With fully interchangeable, 1-piece design and integral load distribution rings, valves eliminate need for multiple pieces and fasteners, facilitating sleeve replacement.

Weir Minerals - Linatex

2701 S.Stoughton Rd., Madison, WI, 53716, USA

Original Press Release

Isogate® Slurry Valves from Weir Minerals Incorporate Superior Linatex® Elastomer Technology for Improved Performance

Press release date: March 23, 2012

Featuring Isogate® WS Series Slurry Knife Gate Valve Sleeves

Madison, WI - Leveraging the proven performance of the Linatex® family of high quality elastomers, Weir Minerals is proud to introduce the new Isogate® WS Series valve sleeves.

The new WS Series sleeves incorporate Linatex® wear resistant technology - which is backed by years of experience in tough abrasive and corrosive environments - and is designed using Weir Minerals' extensive experience of slurry knife gate valve applications around the world. These factors ensure that the new WS Series sleeves can provide excellent overall valve performance.

"The introduction of the new Isogate® WS Series valve sleeves made with Linatex® abrasion resistant and highly flexible elastomers extends wear life, improves overall valve performance, and ensures that Weir Minerals is positioned to be the manufacturing leader in the slurry valve market," says Cal Cobb, Product Manager for Isogate® slurry valves.

In addition, the WS Series valve with its fully interchangeable, one-piece design with integral load distribution rings eliminates the need for multiple pieces and fasteners to make sleeve replacement much easier. Combined with improved sleeve geometry for increased surface contact, friction reduction, and enhanced sealing during valve opening and closing cycles, the new WS Series valve sleeves contribute to an expected low total cost of ownership for customers.

Isogate® WS Series Slurry Knife Gate Valve Features
The WS Series wafer-style slurry knife gate valve is designed to provide reliable service in tough abrasive and corrosive slurry applications. In addition to the new valve sleeves, some of the features of the patented WS series valve include:
o A unibody design and rugged heavy-duty construction, ensuring long valve life and greater reliability
o Complete bubble-tight bi-directional shut-off with no downstream leakage
o Wear parts that are easily field replaceable
o Full port design to reduce pressure drop and downstream turbulence
o No seat cavity for solids to accumulate and prevent full gate closure
o A universal top plate which can be field adapted to accept any offered actuator

For more information about the patented Isogate® WS Series slurry knife gate valves and new valve sleeves incorporating Linatex® elastomer technology, visit: www.weirminerals.com

About The Weir Group PLC
The Weir Group PLC comprises three specialist divisions, each with closely aligned independently successful companies and leading brand name products in their own sectors. Employing, in total, more than 13,000 people worldwide, each division is focused on meeting the needs of customers in chosen key sectors of mining and minerals processing, oil and gas exploration and refining and power generation. The success of Weir, throughout its history stretching back to its foundations in Scotland in 1871, has been founded on the ability to deliver engineering solutions that improve the quality, safety and value of its customers' activities. Today, this pedigree is demonstrated through skilled people and the exceptional new products the Group is bringing to market.

For further information about The Weir Group PLC and its businesses, visit www.weir.co.uk

About Weir Minerals
Weir Minerals employs nearly 3,000 people worldwide delivering end-to-end solutions for all mining, dewatering, transportation, milling, processing and waste management activities. Weir Minerals has an advanced product range incorporating market leading brands (such as Warman® centrifugal slurry pumps, Geho® PD slurry pumps, Linatex® rubber products, Vulco® wear resistant linings, Cavex® hydrocyclones, Floway® Pumps vertical turbine pumps, Isogate® slurry valves, Multiflo® mine dewatering pumps, Hazleton® specialty slurry pumps, and Lewis® Pumps vertical chemical pumps) covering virtually any application, in any environment. The Weir Minerals global network ensures they are close to their customer wherever they may base their local operations.

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