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Pinch Valves and Product Flows

Date Added: July 30, 2011 05:05:17 AM

Control Valves for Demanding Conditions
The versatile Pinch Valve is said to have been developed for the controlled relief of flooded coal mines in Eastern Pennsylvania in the United States of America. This valve can truly be called innovative and original, because of its creative yet simple design. Due to its basic operational features, it gave operators the means of processing the corrosive and abrasive water content from the flooded mines. The flow was restricted by the use of the “pinching” mechanism that exerted pressure on a rubber sleeve.
This basic concept was the foundation for the sophisticated components produced by a Manufacturer of Pinch Valves in the modern world of today. Primary features of this valve variety are its abrasion and corrosion resistant qualities, non-clogging and its unique maintenance free operation. Adding to this is the ability of the valve to seal drop-tight, including solid materials. View for additional facts and information.
The pinch valve is designed to meet the highly demanding challenges of processed products such as slurries and other problematic processing materials, fluids and liquids. The innovative Pinch Valves today forms part of any processing industry and is a component that will be difficult to surpass. Its main source of control and a crucial part of the valve is the sleeve or elastomer located within the valve casing. It is the only part of the valve having any contact with a processed material and therefore can eliminate the need for expensive alloys being used for the casing.
The Manufacturer of Pinch Valves provides a valve that unlike many market alternatives, delivers a flow pattern that is naturally streamlined and gives them a high suitability as a method of control. However, although the respective sizing is of great importance, for an on-off valve it is a question of determining the maximum rate of a product flow. If it is considered that a smaller sized valve is usable, then any benefit can be primarily economic!
A Controlling Scenario
In the case of Pinch Valves used in controlling operations, sizing may be a determining factor. This will not only relate to performance, but to maximum and minimum material flows. Although the port requires sizing in order to provide a maximum product flow, it is however of equal importance that the minimum flow is also considered to prevent the potential of over-sizing.
Should an over-sized port operation involve a minimum flow then there would be a need for the facility of a fully closed valve position. This creates a difficult and potentially problematic condition, because of the rounded port now being entirely flattened and with little space available. In these circumstances within the Pinch Valve a wear location is now created, caused by this wide but extremely shallow space through which the slurries are forced to be processed. An added challenge to this situation is that any small movements in the actuator will result in substantial changes in the flow of the product material. For example, should a shallow space be ¼” then a 1/8” in the movement of the actuator would have a +- 50% affect on the material flow.
These are circumstances created by the sensitivity factor being over restricted, meaning the actuator will now constantly be searching for its own ideal operating location. This continuous action induces extreme wear, not only on the actuator but in relation to the internal operation of the valve. Ideally, any sizing of a valve should be taken under advisement from the Manufacturer of Pinch Valves and their recommendations adhered to.
AKO provide representation with agencies in 24 countries and is able to furnish customers with Pinch Valves, associated products and their spare parts extremely efficiently to different parts of the world.
The leading Manufacturer of Pinch Valves AKO Armaturen is based in Germany, with production Capabilities in France and the United Kingdom. The constant high quality production of valves and other products has been monitored with regular certification in accordance with TUEV and DIN ISO 9001:2008 for over ten years.