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solenoid valve
Posted: Wed Dec 02, 2009 7:02 pm
by rp181
hey,
Im looking for a solenoid valve, all the ones i have seen online are expensive. It should be sufficient to pilot a .5" QEV (railgun injector)
12v trigger signal preferred, anything will do though.
post here or PM me.
Posted: Wed Dec 02, 2009 7:19 pm
by jmadden91
Where are you located mate?
Posted: Wed Dec 02, 2009 7:45 pm
by rp181
Colorado springs, Colorado
Posted: Wed Dec 02, 2009 7:49 pm
by Technician1002
A 24 volt AC sprinkler valve works fine on 12 volts DC. They draw more current on DC due to the DC resistance is lower than the AC impedance.
Posted: Wed Dec 02, 2009 7:54 pm
by rp181
I really did not want to use a sprinkler valve due to available sizes, and its plastic (plasma back flash is likely).
Ile use it if i need to though.
Posted: Wed Dec 02, 2009 8:11 pm
by jmadden91
How about something like
This?
Posted: Wed Dec 02, 2009 8:31 pm
by POLAND_SPUD
what pressure do you want to use ?
well if it's for a railgun then there is no need for rapid fire so you don't need a 3 way valve but just a solenoid valve
you can buy a cheap small solenoid and a 1/8" - 1/4" QEV to pilot the main valve...
of course it's not as simple as just using one 3 way valve with enough flow... you wouldn't have to manually disconnect the air supply before firing
but you can also buy a small 3 way valve and increase it's flow with a QEV.
I've just found a few cheap valves on ebay...
http://cgi.ebay.com/Parker-Skinner-Sole ... 2ea9570ef1
http://cgi.ebay.com/Ten-Festo-Valves-ME ... 25578d942f
http://cgi.ebay.com/FESTO-Solenoid-Valv ... 255769bd86 (but it seems that a solenoid is not included)
http://cgi.ebay.com/Festo-Solenoid-Cont ... 3efab77ae6
this one seems to be a real bargain... if you could buy it for under 20$ you'd make a very good deal... normally valves with such a large porting cost a fortune
and I hope that you realize it won't have any problems with piloting a 1/2" QEV
Posted: Wed Dec 02, 2009 10:58 pm
by rp181
jmadden: thats perfect! to bad bidding ended.
Poland: your second link looks great.
Anyone have one they can part with? i would rather not go ebay.
Posted: Wed Dec 02, 2009 11:28 pm
by sgort87
Posted: Thu Dec 03, 2009 12:13 am
by jmadden91
Mate that store has heaps. Here's another
Very Long Link
Posted: Thu Dec 03, 2009 12:17 am
by rp181
thanks for the links, someone told me about a site that has brass .25" 300 PSI ones for 25$
thanks for the suggestions all.