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3/2 valve as main valve?

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Unread postAuthor: Jimmy K » Sat Feb 11, 2012 11:42 am

The attached image is how I rigged the valve from AutomationDirect to be NO. I am also using regulated CO2 on this launcher.

It can't really be done mechanically. I did it using a SPDT relay and a few switches. Works fine for what I'm doing.
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Unread postAuthor: bookyle » Sat Feb 11, 2012 11:49 am

Gun Freak wrote:What about a mechanically actuated:


yes I considered that valve before. I decided to go with electrically activated because that way i can still keep the trigger assembly, just solder some wires in the correct place. I want the finished gun to look as much as the original as possible.

Also, the gun is a vsr-10 clone, so I can't think of a place to put the valve without major modding to the stock.

I considered mechanical valves before, then I realized how much movement the palm button needs before it is actuated, and I can't provide that much movement with the trigger
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Unread postAuthor: POLAND_SPUD » Sat Feb 11, 2012 12:02 pm

to use a poor main valve? An electric 3-way isn't exactly optimum.

For what he wants to get - that is an airsoft gun - a 3 way indirect acting valve is ideal

What about a mechanically actuated
that is a direct acting valve - that is a valve that opens as fast as you can open it - it isn't ideal

an indirect acting valve isn't much different from a QEV + pilot valve combo... similarly you've got the main vlave that is pnaumatically open by a smaller piloting valve

size can be a problem but he doesn't want to shoot marbles - he wants to shoot 6mm bbs - 1/4" DCV can do that
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Unread postAuthor: bookyle » Sat Feb 11, 2012 12:12 pm

Jimmy K wrote:I did it using a SPDT relay and a few switches. Works fine for what I'm doing.


But is the solenoid valve still using current from the battery when it is idle?

That's the main concern for me with NC valves. I will probably be using 2 3cell lipos as my power source, so if the valves are using power when it's idle, then my battery will die pretty quickly
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Unread postAuthor: POLAND_SPUD » Sat Feb 11, 2012 12:19 pm

bookyle wrote:
Jimmy K wrote:I did it using a SPDT relay and a few switches. Works fine for what I'm doing.


But is the solenoid valve still using current from the battery when it is idle?

That's the main concern for me with NC valves. I will probably be using 2 3cell lipos as my power source, so if the valves are using power when it's idle, then my battery will die pretty quickly

the valves you posted are all NO valves - they don't have to be powered when inactive
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Unread postAuthor: bookyle » Sat Feb 11, 2012 12:23 pm

POLAND_SPUD wrote:the valves you posted are all NO valves - they don't have to be powered when inactive


me or jimmy k?

All the valves on automation direct are normally closed, as stated in the Specifications pdf.

The single solenoid models provide 2-position, normally
closed, spring return operation and the double solenoid models
provide 2-position, energize open/energize closed operation.


edit

oh yea, have we arrived at the conclusion about this? The manufacture symbol and the symbol on the valve say different things from what I see

http://www.ebay.com/itm/3V210-08-DC-24V ... 5ae4a848c0
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Last edited by bookyle on Sat Feb 11, 2012 12:25 pm, edited 1 time in total.

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Unread postAuthor: Jimmy K » Sat Feb 11, 2012 12:25 pm

bookyle wrote:
Jimmy K wrote:I did it using a SPDT relay and a few switches. Works fine for what I'm doing.


But is the solenoid valve still using current from the battery when it is idle?

That's the main concern for me with NC valves. I will probably be using 2 3cell lipos as my power source, so if the valves are using power when it's idle, then my battery will die pretty quickly


Assuming you're using batteries with an average of about 360mAH (Google provided me with this number), they would last you about 2 hours of continuous use with that specific valve (current is 0.125 amps).
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Unread postAuthor: bookyle » Sat Feb 11, 2012 12:37 pm

Jimmy K wrote:
Assuming you're using batteries with an average of about 360mAH (Google provided me with this number), they would last you about 2 hours of continuous use with that specific valve (current is 0.125 amps).


well if that's the case, then I think I got my answer.

I'll just use this valve
http://www.automationdirect.com/adc/Sho ... S-3212-24D

with two of this battery
http://www.hobbyking.com/hobbyking/stor ... P_15C.html


this should work right?
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Unread postAuthor: POLAND_SPUD » Sat Feb 11, 2012 4:18 pm

me or jimmy k?
you - the valves you posted are NO valves
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Unread postAuthor: bookyle » Sat Feb 11, 2012 4:42 pm

Poland, are you sure that this valve is NO

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=390383290560

did you read my post about the manufacture website having a different symbol

Edit

I asked the seller for a better picture of the diagram, maybe that will help

edit 2

this appears to be the same valve, with a better picture of the diagram.

It said NC on the valve

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Unread postAuthor: bookyle » Sat Feb 11, 2012 5:10 pm

Ok, you know what, I'll just order this valve

http://www.ebay.com/itm/3V210-08-DC-24V ... 5ae4a848c0

and if it is normally open, so much the better, if not, oh well. I'm going to buy some 1000mah batteries anyway, so if it is NC, the batteries can last me a whole day.

one more thing, what is PT thread? I know NPT and G, but what is this PT thread that comes on a lot of e-bay valves?
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Unread postAuthor: POLAND_SPUD » Sat Feb 11, 2012 5:17 pm

ohh that explains a lot - I didn't notice that the spring return and actuator are the other way round... that symbol does not follow the rules


this is 'standard'
Image
so yeah - sorry you're right - it's an NC valve
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Unread postAuthor: bookyle » Sat Feb 11, 2012 6:36 pm

that symbol does not follow the rules


symbols not following the rules, what a surprise, typical of chinease manufactures/sellers on ebay.

So far the only NO valve I found are the one from clippard and this

http://www.ebay.com/itm/3-Way-1-4-Solen ... 483d741037

Both at around $40
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Unread postAuthor: Gun Freak » Sat Feb 11, 2012 7:45 pm

I'd go for the clippard one. Their stuff is very high quality.
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Unread postAuthor: bookyle » Sat Feb 11, 2012 9:17 pm

Gun Freak wrote:I'd go for the clippard one. Their stuff is very high quality.


Yea, I was thinking the same thing. I heard good thing about Clippard from here

Thanks everyone

Edit

wait no! What am I thinking? The Clippard valve is NC as well, so there is only one NO valve...
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