PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 2, Number 2, 2016
PALM VALVE INNOVATION
Palm valves, also known as edge tracking units, are pneumatic-mechanical devices that detect the position of the fabric edge and drive the guide in order to keep the fabric running straight, parallel to the paper machine centreline. Weingrill Srl, a major manufacturer of electro-mechanical products for the paper-making industry and represented in the UK by Jarshire Ltd., has developed a new model, known as Series 50000, to complement its 25600 range. Totally enclosed within a hermetically-sealed body, the 50000 brings two major additional benefits – one, it avoids the detrimental collection of pulp and/or unwanted contaminants inside the body; and two, it significantly decreases the contact pressure between anti-wear sliding surface and fabric. This design feature makes it ideal for use in harsh and humid environments, such as the drying section, whilst the gravity-generated, reduced-contact pressure, guarantees longer life to fabric edges. All Weingrill palm valves are of robust stainless steel construction with sliding surfaces of anti-wear ceramic material. Both have the same control valve (centre closed) solution that is suitable for the precise and reliable control of guiding devices with two actuators. Further information may be obtained from: Jarshire Ltd Levels House Bristol Way Stoke Gardens Slough SL1 3QE Tel: 01753 825122 sales@jarshire.co.uk www.jarshire.co.uk
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