PINCH VALVES CUT CLOGGING RISK
March 1st 2004

Where powders and granulars are being handled there is the risk that the media will choke or block valves, for example in storage hoppers and tanks. One way to eliminate such problems is to specify pinch valves that, by design, are unlikely to become caked or clogged by media containing powders, granules or other similar solids. Milton Roy UK offers a wide range of competitively priced automatic pinch valves that provide the advantages of providing a complete seal without the need for glands, while also ensuring a full flow within the process line. Problems of pressure drop occurring are avoided, even when viscous or paste-like liquids are involved. Valves are composed of a cylindrical reinforced sleeve of natural or synthetic rubber assembled within the valve body. Closure is achieved by applying pressure, usually compressed air, which squeezes the sleeve into a flat configuration made possible by the pattern of the reinforcement. This ensures a tight shut. Automatic pinch valves can operate with line pressures to 4bar and control pressures to 6bar.

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