The terms economical, practical, efficient and effective are only a few descriptions applicable to the component known as the manual pinch valve. This valve is effective within operations where extreme tasks are completed in a variety of applications, varying from routine material processing, to highly technical and involved systems. A further example is the manual operated pinch valve, a valve which is able to affect the blocking of large and diverse materials, as well as regulating and measuring the various aspects of their flow.

Control pinch valves are, in many ways, necessary in industry as within many applications, they make major contributions in regulating the flow of fluid gases, liquids, solids and slurries. The operating principle of a manual operated pinch valve is recognized among industries as being simple but highly effective; whether used in the processing of heavy duty materials, or as a general purpose valve.

The rubber sleeve or elastomer for pinch valves, is the controlling factor of a manual pinch valve, which when squeezed by atmospheric pressure, results in the blocking of a material or liquid flow. When the atmospheric pressure from the valve is released, the sleeve is opened. Being highly elasticized, in combination with the inherent pressure of a processed material, this causes the valve to open fully and allow the free flow of material to continue. These varieties of valves are versatile by design and have the capacity for low friction resistance with a processed material. This is an aspect that benefits the many users of a control pinch valve, particularly when used in pneumatic conveyor systems. The applications, in which this type of valve is used, are generally related to the treatment of sewage and the processing of materials in the pharmaceutical, food and beverage industries.

A model of valve that makes many contributions within the home is the control pinch valve. This is a component able to regulate the flow of liquid or fluid and the rate of the flow material. Furthermore, the control of volume, pressure and even the direction in which the material is processed can be controlled. The flow of material is attained by using a pipeline or chute, and an operation can be started, stopped, regulated or isolated with the aid of a manual pinch valve.

Users of manual operated rubber valves will be concerned with the type and physical form of the material to be processed when deciding the appropriate valve for their specific application. Further consideration will be given to any varying temperature levels and pressures which may be encountered during the processing procedure. To be included under important factors, will be the potential for cavitations and an allowance for corrosive, erosive material properties and the viscosity of certain materials, for example gas, liquids or solids. In the fields of processing food and beverage or pharmaceutical product materials, is a highly utilized manual rubber valve. In these industry categories, the needs of a user will be considerably influenced by the necessity for an operation to be conducted in hygienic conditions. Specific criteria will also be present in the chemical and petro-chemical industries, with regards to the potential for explosion or combustible risk.

For applications involving heavy duty materials a control pinch valve is the ideal component. It is a valve that has become necessary in the processing of materials such as dry lime, which are finely granulated. This is a specific material, with a dry matter content level consistency level of 65% to 90% and which is particularly difficult to process.