Custom Search

Manual Pinch Valves And Problematic Materials

Product Flows with a Difference

There are many different types of valves of standard design available, but in actual operation they are often not considered suitable for applications involving abrasive products. Although of simplistic design and operation, the Manual Pinch Valve performs at a high level despite the form of the processing product. However, due to the complexity of some materials, it is advisable for a user charged with processing these particular types of materials, to research the property content of the products. It will mean having a comprehensive knowledge of the properties, because there are no safe limitations for the concentration of solid materials. For example slurry, a non-abrasive material but containing hard, angular solids!

Similarly with any other industrial component, a successful operation depends on having the correct methods and equipment for a specific application. It particularly applies to the selection of valve variety, most suitable for processing abrasive and corrosive materials. Considerations will include durability, reliability, the design, construction and recognized high performance levels. The Control Pinch Valve meets and extends beyond this criterion! Factors such as, isolation, changeover and the regulating, mixing, control and safety are all part of an effective valve system.

A crucial aspect of processing materials of this nature is that the testing and grading of abrasive substances may be complicated and expensive. An added possibility is that “non-flowing” tests may produce inaccurate results, due to potential sample attrition. However, the degree of material solidity in erosive jet testing is a significant factor in combating abrasion and erosion. Generally, to restrict material loss, the solidity of materials should be 75% more than the particle hardness. The Manual operated Pinch Valve in comparison to other types of valves provides users with the advantage of the innovative and unique elastomer sleeve.

Unique Design and Construction

The elastomer sleeve is a critical and highly influential component in any processing operation and is the main part of a Manual Pinch Valve. It confines the processing product within it, thereby preventing any direct contact between it and any part of the valve or equipment. Its flexibility and abrasive resistance enables it to process virtually any form of liquid, fluid and materials, including those of an abrasive and corrosive form.

The effectiveness of the Manual operated Pinch Valve is supported by its simple operation, which is a hand-wheel. Pressure exerted onto the elastomer sleeve, compresses it into a sealed shut-off position against the product flow. Regulation of the product flow rate is by varying the degree of pressure ion the elastomer sleeve, by positioning the hand-wheel anywhere between fully open and fully sealed closed.

An important consideration in the selection of available varieties of valves is that the diameter of the valve flow port may be smaller than that advertised by the designated pipe size. Accurate information concerning a particular operation should therefore be exchanged with the valve supplier to ensure a correct component for the particular application. Control Pinch Valves are recognized for their durable and reliable performances, but their high level of success is greatly determined by the compatibility between the elastomer sleeve and the processing product!

By: Charlotte Hupfield

Article Directory: http://www.articledashboard.com

During the past 26 years, AKO Armaturen & Separations GmbH has established an excellent reputation as a company with innovative and best quality control pinch valves and other products, with efficient and effective customer service and support. The leading manufacturer of Manual operated Pinch Valves, AKO have production facilities in Germany, France and the United Kingdom and representation in 24 countries.

© 2005-2011 Article Dashboard