[admin]

I don’t think so as the circuit works by maintaining a pressure on both sides of the piston at the same time.

[admin]

Have you tried regulating down the pressure holding the table down before energizing your cylinder up? This would reduce the amount of air that has to be exhausted before lifting occurs. This could reduce the 5 second lifting delay. It probably won’t have much effect though if your circuit is causing the restriction. Once the cylinder is up it probably has a lot of air to be exhausted. The inrushing air is giving you your initial motion down at which point the exhausting air is being choked due to the circuit restriction. Have you thought about adding a quick exhaust valve on the cylinder to allow the exhausting air to bypass your circuit? Have you tried reducing this pressure? Have you checked into replumbing your valve for double flow and letting gravity do the work on the return? If redesigning your circuit is an option than this article might help. http://www.machinedesign.com/ASP/viewSelectedArticle.asp?strArticleId=56483&strSite=MDSite&catId=0

[admin]

The rduced rod end pressure took care of the problem nicely after a litle tweaking22gg. The cylinder operates quickly and smoothly now. THANKS:

[admin]

You need to resize your valve and tubing, as this is causing your delayed reaction times.

[admin]

The pros are high speed and long life, the cons are sticking after sitting idle and increased air loss.

[admin]

Metal sealed solution valve are ideal for quick response times and 24/7 usage, also there life expectancy is greatly increased, although dissadvantages are you need very clean air and a regulated temp range for optimum use. Even by leaving the valves over a weekend without use could enable the valves to “stick”, my opinion now would be to use a standard sealed valve, unless your requirements are for high speed and high usage.

[admin]

Try searching for a product called Polar Lube. It was available from Alex Milne a number of years ago.

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Brain Chen – please get me the proper e-mail add. or how do i contact them. i aready mail sale.acy@msa.hinet.net but some error. Please advise that. Thank Q

[admin]

You need a part number, as all you are stating is “standards” which cover a multitube of sins

[admin]

any ones iso valve will fit

[admin]

Try: http://www.midwestairparts.com/joy.htm

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I don’t have the answer but would like to see it when you find it. One heck of an assignment for any class. If you care to answer: What is your school? What is the class Title? Who is your instructor? Did the instructor specify whether a Spool or Poppet design valve? Interested because I would like to use the question for my classes.

[admin]

Bill, give us a call. We would be glad to help you out.

[admin]

Numatics (brand name) Great valves, great company. If you are interested I could look at setting something up E-mail me

[admin]

Contact Norgren at http://www.norgren.com

[Author]

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