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4 way problem

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4 way problem

Unread postAuthor: pneumaticcannons » Fri Mar 02, 2012 8:32 am

I recently purchased a 4 way, indirect acting valve for a school project (reason iv'e been so inactive lately) I hooked it up to my piston and triggered it with a 24v power supply(pressurized to 60psi). It essentially works but in the second position, It leaks out of the R/exhaust port. Does anybody know what the problem is? It could be a defective valve since I bought it in chinatown though I hope thats not the case...
Here it is:
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Unread postAuthor: Petitlu » Fri Mar 02, 2012 8:57 am

yes it is normal!
is a distributor 3/2 ....
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Unread postAuthor: pneumaticcannons » Fri Mar 02, 2012 10:06 am

No, it is a 4/2 valve. And when I said It leaks out of the exhaust port, I meant it leaks even when the double acting cylinder is fully extended. I tried pinching the line of the cylinder (once extended) to check if maybe the inside seal was the problem but it didn't affect the leak at all implying that the valve is defiantly the problem.
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Unread postAuthor: POLAND_SPUD » Fri Mar 02, 2012 10:10 am

you know what? a better pic of the valve and a pic of the whole setup could help
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Unread postAuthor: jackssmirkingrevenge » Fri Mar 02, 2012 10:23 am

From the title I thought this was a thread about gangbang issues.
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Unread postAuthor: pneumaticcannons » Fri Mar 02, 2012 10:39 am

:D :D
a better pic of the valve and a pic of the whole setup could help

as you wish
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Unread postAuthor: warhead052 » Fri Mar 02, 2012 11:09 am

jackssmirkingrevenge wrote:From the title I thought this was a thread about gangbang issues.


Your not the only one haha.

Pneu, try attaching it to a push button switch, that way you can open it at a push of a button, and then the sharp cut off of power should revert it back to normal.
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Unread postAuthor: evanmcorleytv » Fri Mar 02, 2012 1:06 pm

warhead052 wrote:
jackssmirkingrevenge wrote:From the title I thought this was a thread about gangbang issues.


Your not the only one haha.

Pneu, try attaching it to a push button switch, that way you can open it at a push of a button, and then the sharp cut off of power should revert it back to normal.


I think that a push button switch, AND a relay timer would be even better, but yeah, a push button switch would do JUST fine.
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Last edited by evanmcorleytv on Fri Mar 02, 2012 4:57 pm, edited 1 time in total.

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Unread postAuthor: POLAND_SPUD » Fri Mar 02, 2012 4:00 pm

as you wish
thx so now I know that everything is connected the way it should

Does it leak in both positions or only in one position ? It is possible that this is 100% normal (ie. valve leaks because of the way it operates)

Here is its datasheet -> http://content.smcetech.com/pdf/VZ1000_1002.pdf
But I can't figure out how it works yet
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Unread postAuthor: pneumaticcannons » Sat Mar 03, 2012 3:57 am

It only leaks when it is energized. I don't think it's normal though since I got it to work properly twice.... out of the 500 times i've tried to get it working. FML.
try attaching it to a push button switch

think that a push button switch, AND a relay timer would be even better

It's all going to be controlled by an arduino when I'm done. I'll probably post a video of it when it's finished and if we can solve this delay in time. That is if you guys care to see it. "it" is a secret :D
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Unread postAuthor: ewok11 » Sat Mar 03, 2012 4:02 am

take the air line that doesnt have air pressure off the air ram if there is air coming out then the seals in the air ram a worn or damaged
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Unread postAuthor: Petitlu » Sat Mar 03, 2012 4:04 am

Arduino ... a French friend made ​​a full auto with a PAC arduino
:D
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Unread postAuthor: pneumaticcannons » Sat Mar 03, 2012 4:34 am

ewok11 wrote:take the air line that doesnt have air pressure off the air ram if there is air coming out then the seals in the air ram a worn or damaged

Yes, I already tried that but thanks for the suggestion anyway

The leak seems to have gotten better overnight but it's still their. Before going to bed I removed the solenoid and poured quite a bit of silicon oil into the valve. Now my question is if it's normal to have to lubricate these types of valves so much or if their is a problem inside with the spool assembally?


Arduino ... a French friend made ​​a full auto with a PAC arduino

cool, you should ask him to post it :P
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Unread postAuthor: POLAND_SPUD » Sat Mar 03, 2012 7:02 am

It only leaks when it is energized
let me guess it doesn't leak much, right ??

apparently port R is where air from the solenoid is vented (as well as air from ports A and B)....
if that's the case then it is perfectly normal

In some valves air from the solenoid is vented through the solenoid tube itself...

if you want to be sure that's everything is ok check if there is any air exhausted theough the top of the valve when you switch it
if it doesn't and there isn't a hole there then you know why - vented air from the solenoid is directed to the exhaust port (port R)
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Unread postAuthor: wyz2285 » Sat Mar 03, 2012 10:47 am

How much was this valve? Did the push to connect connectores came with it?
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