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Sprinkler valve question

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Sprinkler valve question

Unread postAuthor: tony2405 » Sun Aug 21, 2005 11:57 am

I bought a Rain Bird 3/4 inch automatic sprinkler valve to modify it for my spud gun. I drilled through the plastic piece and fit my blow gun into it but i wasnt sure if i had to drill through the rubber piece too. Currently i havent drilled through the rubber piece and there seems to be no air flow through the sprinkler valve. Please help me. :?:
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Unread postAuthor: spudshot » Sun Aug 21, 2005 12:20 pm

dont drill thru the rubber, thats the diaphragm that makes the whole thing work. do you have your blowgun on right (1/4" NPT side will be on the valve, 1/8" NPT will be open) is your valve on right, there should be an arrow on the valve, that needs to point toward the barrel.
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Unread postAuthor: tony2405 » Sun Aug 21, 2005 3:34 pm

yea i pretty sure i have the sprinler fowing the right direction and my blowgun is on how you said it should be too. Also when i go to fill the tank up with my air compressor the air is going into the tank but the pressure gauge has no reading. Does this mean i have a leak somewhere?
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Unread postAuthor: spudshot » Sun Aug 21, 2005 5:30 pm

hm, is your valve "honking" or allowing air to pass thru the barrel as you're filling it?
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Unread postAuthor: tony2405 » Mon Aug 22, 2005 10:00 pm

I think there is a little bit of air that is flwoing through the valve as i fill it. what can i do to fix this?
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Unread postAuthor: julz » Tue Aug 23, 2005 2:34 am

sometimes the volume of air that flows through can stuff it up, i had to reduce the size of my chamber to fix this problem
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Unread postAuthor: tony2405 » Tue Aug 23, 2005 5:15 pm

also i think there is air leaking through the joints of my chamber like where is glued the PVC pipe together. I just used pvc glue but should i have used something more heavy duty?
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Unread postAuthor: spudshot » Tue Aug 23, 2005 5:26 pm

you should have used primer too, if you had the fitting and pipe would be fused together instead of just glued
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Unread postAuthor: tony2405 » Tue Aug 23, 2005 10:00 pm

so just put primer on the inside of the fitting and the outside of the pipe and then put them together?
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Unread postAuthor: CS » Wed Aug 24, 2005 5:15 pm

Put primer on the pipes before you put glue on them. This will lessen the chance of ari leaking out of the PVC joints.
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Unread postAuthor: spudshot » Wed Aug 24, 2005 6:23 pm

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Unread postAuthor: tony2405 » Fri Aug 26, 2005 10:01 pm

ok i took my old chamber off because there was a lot of air that was leaking out. I did what you said and put primer on the pipes before i glued them and there isnt one leak on the chamber. Now i think i have a bigger problem. There is air leaking through my sprinkler valve but not much. It makes sort of a huming noise almost and it is coming out down the barrel, not out a crack in the actual valve. I think you mentioned this is "honking". what do you sugggest?
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