Page 1 of 1

blow gun question

Posted: Wed Jan 09, 2008 10:56 pm
by JDAX23
yesterday i purchased an orbit sprinkler valve as well as a blow gun.
i know i need to drill a 1/2 inch whole in the middle of the valve, but my question is if i want to mount the blow gun directly to the valve for better performance, all i have to do is just use an adapter correct? with some teflon tape? and then it will work?

thanks

Posted: Wed Jan 09, 2008 10:58 pm
by BigJon
Yes thats how it works but for 1/4" threads I believe it's a 7/16" hole but whatever.

Posted: Wed Jan 09, 2008 11:00 pm
by elitesniper
1/2 inch? i think you mean 1/4 inch and yeah try to get it in the middle. if you want an inline the your put the blow gun in directly into the valve but if you want a little longer then just use two barbed fittings and tap it in the valve, yes always use teflon on threaded fittings for good seals

Posted: Wed Jan 09, 2008 11:02 pm
by JDAX23
alright thanks guys, but im pretty sure my blow gun is a 1/2 inch, the adapter that came with it is 1/2 inch and fits into it... so i was planning on screwing one side of the adapter into the blow gun, and the otherside into the valve

Posted: Wed Jan 09, 2008 11:43 pm
by windshrike
There are no 1/2" blowguns that I know of..........
JDAX, I think you actually went and measured your fitting's diameter. This size of fitting is called 1/4" NPT(National Pipe Thread), and is, in actuality, 1/2" wide. However, in order to tap the hole properly to minimize leaks, a 7/16" bit should be used.

Posted: Wed Jan 09, 2008 11:46 pm
by MrCrowley
Hmm weird, most are 1/4". Never seen a 1/2" on a blow gun before.

Check it with the ones in the tutorials on the site.

Just drill a hole to your fitting size I guess.

Posted: Wed Jan 09, 2008 11:46 pm
by JDAX23
haha ahh there you go lol thank you kind sir much appreciated... im a retard

Posted: Thu Jan 10, 2008 12:02 am
by SpudUke5

Posted: Thu Jan 10, 2008 11:55 am
by jimmy101
Elitesniper (and others) are correct, the size hole you need to drill has very little to do with the nominal dimension of the fitting.

Just a suggestion, but before you go drilling a hole in the essentially irreplacable valve body you should do a test installation on something like a piece of scrap PVC.

"measure once, cut once, swear for 15 minutes, make another trip to the hardware store ..."

Posted: Thu Jan 10, 2008 3:44 pm
by SpudUke5
"Measure once, cut twice" O sh*t i messed up my cannon :)

Dont want that happening now do we.