sprinkler valve not working

[hi.]

I think this has been brought up before, but I need help. I am currently working on a pneumatic cannon that uses a orbit watermaster 1 inch sprinkler valve. I am proud to say that the cannon it done, but very sad to say that the valve dosnt work. I hook it up to my compressor and it all leaks out just as fast as I put it in. Also, it honks like a horn because the diaphram vibrates, at least I think thats why. this is the valve. I havent modded it yet, could that be the problem?

http://www.orbitonline.com/products/pro ... &subcat=24

So far ive tryed oiling it, yelled at it, and I threatend it. Any other suggestions?

PS. im the original HI, i forgot my password and finally it asked my to sign in, just we are clear on that.

[BewareOfDog]

First thing:

Check to see if the valve is installed "backwards". There should be an arrow somewhere on the side showing the direction of flow.- The arrow should be pointing towards the barrel.

Edit: Solenoid is towards the barrel:
<a href="http://img.villagephotos.com/p/2003-9/398596/Sollocation.JPG"><img src="http://thumbs.villagephotos.com/19586785.jpg"></a>

[hi.]

it does. should i seal up the little hole at the top? when i cover it with my finger it stops honking, but still leaks.

[BewareOfDog]

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by hi.
[br]it does. should i seal up the little hole at the top? when i cover it with my finger it stops honking, but still leaks.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Which "little hole at the top" are you talking about:?:

[TurboSuper]

You probably threaded you're blowgun in too far, if it sits on top of the diaphragm it will not allow it to actuate properly.

Also be sure to epoxy up the solenoid hole.

[Gramanam011]

I just looked on the forums for 10 minutes and found the answer.
Check for any plastic bits on the orafice(sp?) and get rid of them. Then the gun should work.
I also remember reading someware that you should " Hold the blow gun open [when you start filling the launcher] and then release it."

Hope that helps!

[hi.]

DR- sorry, i should have been more clear, yes the solenoid hole.

Gramanam- thanks alot.

edit- i havnt put a blowgun on, i was just testing it, could that be it?

[Gramanam011]

Well you need something to hold back the preasure when the valve seals and the pilot area ( and tank) start filling up. So it is recomended that you attach the blowgun just to reduce the number of things that can go wrong.

[hi.]

i was looking around at spudfiles and read a post about someone with the same problem. someone said that alot of the watermaster sprinkler valves arent working are are being recalled. does anybody know if this is true?

[hi.]

i fixed it!!!!!!! The problem wasnt with the blowgun, it wasnt me putting the valve on backwards, it was a stupid piece of plasic that cost them 5 cents to make 100 of them. it puged up the equilization hole and no pressure could build on top of the diaphram. if anyone else has this prroblem ill describe the part to you; it is about 1/2 inch wide, is ovale shaped, and has about 50 little tiny holes in it. what do you do with this part? you take it, yell at it, hold it over a blow tourch for 5 seconds, then throw it away. this should solve your problem, because it sure solved mine!