Selecting a pneumatic valve
1st Quarter 2012
Pneumatic systems & components
Selecting the right pneumatic valve for your machine requires three important factors to be considered: shifting force, balance and speed.
In order to ensure a reliable valve, high shifting forces are required. A valve with a higher shifting force will have a faster speed and better reliability.
In many applications it is critical that the same result is achieved each time a valve shifts. A filling machine must fill bottles to the same levels. A sorting machine must eject bad parts consistently. To do this, a valve’s output must be repeatable at all pressure levels. This is especially important when compensating for variations in pressure during normal plant operations. This attribute is achieved through a balanced design.
MAC Valves meet the demands
MAC Valves is a specialist in air valve solutions for the filling industry and the valves meet all these requirements. Speed and repeatability, both critical filling parameters, are inherent benefits of the design, and the MAC range of valves helps optimise cycle time and significantly improves fill consistency.
The company’s patent pending Bullet Valve technology represents a step change in air valve technology. It features a unique ‘lifting’ solenoid where the valve maintains a balanced design and so is unaffected by fluctuations in air pressure. This is a signature feature of MAC valves. Shifting forces are consistently high and response times are repeatable, regardless of inlet pressure fluctuations. Both 2-way and 3-way configurations of the BV cartridge (9 mm, 10 mm and 14 mm) are available.
The wiping action means that the valves are virtually unaffected by typically contaminated air and the calibrated strokes result in extremely repeatable response time and flow.
For more information contact Mike Vernes, Pneumatic Electric Control Systems (PECS), +27 (0)31 303 3701, [email protected], www.pecspower.co.za
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