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Mark;The input signal is not the problem, it is the compressibility of the air that causes the problem. Even proportional valves are inaccurate and non-repeatable when the load varies or there are changing outsice forces working against the actuat

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MarkI agree with Bud that pneumatics work well for many applications. But in some application the compressibility of air may become a problem affecting repeatability, that is the ability of the rod stem to come back to the same position every time

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Thanks Newton. Do you know of any place on the web where I could see one of these positioners”? I checked out the R-421 valve on Clippard’s website. I have been waiting a while for their catalog

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Mark,although I agree with the comments of both gentlemen above to use either proportional valves or pneumatic position sensors, another alternative would be to use a 5/3 closed centre valve to control the cylinder and stop it at the required posi

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MarkThinking about your application I wonder if there is a need to position the cylinder rod at a known location or be able to know the rod location during its stroke?What I mean is that to position the rod to a known location the cylinder needs t

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Dear Sir or MadamWe are a Singapore enterprise which is located in Wuhu ,Anhui,China,specialized in producing and exporting sintered and bonded magnets.From 2001, we have exported plastic bonded ferrite ring magnet for Pneumatics Component(Air Cyl

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Dean, Contact me and I will help you out. I am a Pneumatic Controls Designer and would like to help you out with this. My work number is 248-377-4950 x188

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Miss Sakunes, Now we are newly launched online pneumatic maga store. you can purchase valves , cylinders, fittings and all your pneumatic requirement through online. We can deliver to your address. for more details log on to http://www.systel.co.in

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Try this sitehttp://home2.planetinternet.be/hv638529/engelsindex.htm

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Try the link belowhttp://www.pneumaticsonline.com/BasicTraining/

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Hi SaraBeth,I believe the brand name is Effector. I did a search on the web and comae up with a pile of hits. Way too many to sort. You should have no trouble finding it.

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Larry;There is no Over Center valve for air circuits that I know of. Have you considered an Air-Oil circuit? Go to http://www.pneumatic-source.com to see a chapter out of a Fluid Power Training book I have put together to see if one of the methods there

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Hi Larry,You have an interesting application, and before I comment on it, I would like to know more about how you intend to rotate the mass, and what your plans are for dealing with it etc. when you reach the end of your rotation.What you do with

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This is just an idea:Just before you get to the over centre point, have the pressure sensed in the side that is in the lifting side.At or maybe just before, the overcentre point, put the same pressure into the other side.It might be simpler put s

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David…have you tried contacting Hayward, Burkert Contromatic or Plast-o-matic. I believe one of these three can help you out.For solenoid vlaves you have to get the right materials for use with chlorine. Typically, that would be stanless steel o

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