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The Demand For Pinch Valves for Material Flow and Processing

Date Added: July 04, 2011 11:30:31 PM

There is an increasing need for manual operated squeeze valves within industries involving fibrous and corrosive applications. The valve is highly suitable for these types of demanding applications, as it possesses the ability to serve as a blocking method with an ability to close easily.

Most industries have specialized applications and in order to meet demands in this respect, the critically important inner sleeve of the valve is manufactured in a variety of elastomer compounds and qualities. Therefore, control squeeze valves are recognized for their versatility in applications that require specific operating temperatures.

A control pinch valve processes a myriad of substances, from the thinnest of gases to radio active materials and is heavily utilized within industrial service. These applications include the processing of highly corrosive chemicals, hot steam and abrasive slurries. There are various accessories that can be used in conjunction to a control pinch valve for example, positioners and pressure regulators, among others. A description for a check valve could be a two-port component, as it houses two openings in the casing, one for fluid entering the valve and the other for fluid to exit. Manual pinch valves are utilized in a number of varying applications and are widely found as component of everyday household equipment.

Mechanical valves allowing the flow of fluids, liquid or gas in a single direction are known by various names such as check valves, non-return valves or one-way valves. The manual rubber pinch valve has a basic construction, consisting of a body with a pipe connection and components for sealing functions, usually operated by an actuator. Adding to its performance capabilities is the ability to operate effectively with extreme pressures. These can vary between a high vacuum, to pressures of thousands of pounds per square inch.  This component is generally perceived as a common household item. However, the manual operated rubber pinch valve is highly regarded and an essential part of many industrial processes.

Industrial fittings and components are used widely in various aspects on offshore platforms in the oil and gas industries. Control pinch valves are widely used in these industries within applications such as sub-sea control systems and offshore production involving pipelines. Due to this type of operation requiring strict norms and measures, equipment and components are manufactured to a high quality and designed to give a reliable performance with minimum downtime. Manual pinch valves have excellent resistance to chemical and atmospheric agents and are capable of performing in adverse weather conditions.

When this type of valve is fully opened, the flow of fluid is in a direct line with the collar of the sleeve, thereby replacing the need for a gasket. This action does, at the same time, assist in the maintaining of positive control over the flow of the fluid. A manual operated pinch valve is constructed with a casing, flanged or screw end and an elastomer tube, referred to as an insert or liner. The closing of the valve whether a screw type or flange, is either by manual means or air pressure. The sleeve valve is designed to operate in a flow range without damaging cavitations for the specified conditions. A control sleeve pinch valve application is enabled by the incorporation in the design, of multiple tapered outlets on the internal sleeve.  These outlets are in a formation, causing water streams to be directed towards a meeting point at the center of a downstream discharge pipe.

The simplicity in the design of a manual pinch valve is highly benefit to users. It is also a contributing factor regarding minimum downtime and low maintenance costs. Only one aspect of the valve is subject to wear, which is the inner sleeve. Aside from this single component, the valve does not possess any mechanical parts and the use of an actuator is not required. In many applications, there is a requirement for a material or fluid flow to be regulated or throttled at a certain point, between full flow and a minimum rate. This is achieved with control pinch valves by introducing flow resistance, or by-passing the flow with a change of direction. For more information please visit