Measurement Instrumentation Control Equipment and Experience for Indiana's Process Control Needs

Valves Key Terms On / Off:  To control flow only in the open and shut positions. Control:  To control flow by varying amounts according to the needs of the process. Solenoid:  A simple electrical on / off valve used to start and stop the flow of clean liquids in 2" and smaller pipes. Pinch:  A specialty valve for slurries, powders, and dirty or viscous processes.  Essentially a flexible reinforced section of pipe which closes by squeezing shut from the outside. Actuator:  The connected driving device which opens or shuts the valve by remote control.  Can be pneumatic, electric, or hydraulic. What we typically need to know: Manual or automatic Pipe Size, material, and connection Flow pattern (2-way, 3-way, or 4 way) Pressure & temperature Media to be sensed Material compatibility Supply air available Electrical classification and power available

Full bore pinch valves are used for control of slurries and abrasive media.  The white reinforced sleeve is a flexible elastomer material, similar to a gasket or o-ring.         Ball valves for ultra-clean high-purity applications

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