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MAC Valve Repeatability
There are numerous applications where repeatability is a must. High speed,
dispensing, welding, sorting and pick n place just to name a few. What causes systems to
be erratic? Is it the programming, actuators, electronics? No, it's the air valve, that
little $50-100 commodity that is the heart and soul of your system. Is it just a
commodity? Well, if it's not a Mac Valve then yes it's just a commodity item. Why? Because
all valves are made the same way if its not a Mac Valve.
Air fluctuation is a major problem in all applications. The change in air pressure changes
the force to the valve. If the pressure drops, there is less force acting upon the
unbalanced poppet and therefore will take longer to unseat. If the pressure bounces back
and forth, then so does the response time of the valve. Hence, no repeatability. Your
welding will not achieve the correct pressure, your sorting will not sort the correct
part, and your pick n place will crash. Repeatability is a must.
If your application requires repeatability, consistent response time, high speed, which
most do, then Mac Valves is your solution. Ask about our demos that show not only how a
Mac Valve functions but how the valves you are currently using operate. These demos are
available at your site at your convenience. Please E-Mail us or call our office to set up a demo.
Un-Balanced
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Balanced
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Disadvantages
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Advantage
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- Normal pressure fluctuations cause inconsistent shifting forces.
- Air pressure fights return spring, reducing shifting forces.
- Weak return spring force.
- Exhaust contaminants pass through operating solenoid parts causing sticking and coil
burn out (Skinner type).
- When air pressure rating is increased, the inlet and exhaust orifice must be reduced
thereby decreasing flow through the valve.
- Multiple models to cover range of vacuum to 150 PSI, each with separate Cv rating.
- Pilot valves rated for 150 PSI have very low flow.
- Exhaust, located in pole piece, is restricted due to core iron requirements (Skinner
Type).
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- Valve shifting forces are consistent and independent of pressure fluctuations.
- High solenoid and return spring forces ensure high speed and precise repeatability.
- Exhaust contaminants are isolated from the solenoid.
- Manual override - standard.
- Constant flow maintained throughout the pressure range - including pilot valves.
- Full flow exhaust.
- Universal porting - 6 functions in one valve.
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To receive Information, Training or a Product Demonstration
© Fluidtrols Corporation. 2004
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