Well, I'm needed a valve for a new cannon. A sprinkler valve doesn't have enough flow, and a piston valve is too bulky, and not low profile. So, I modded the $hit out of a sprinkler.
WARNING: Modifying a blowgun may ruin the seal if you're not careful. This has happened to me, don't blame me if you mess it up.
How to further mod a sprinkler
- Attachments
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- Part 1: Modifying the blowgun
A regular Husky blowgun.
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- Unscrew the internals.
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- Take out everything but the spring.
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- The internals.
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- The inside parts look like one, but they're two pieces.
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- The starting bolt.
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- The finished bolt should be about half the width of what there was to begin with.
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- The starting hole was smaller than a .177 BB.
The finished one is over 1/4.” Now put everything back together.
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- Part 2: Modifying the diaphragm
The “regular” version.
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- The new version, capable of 175 psi, with loads more flow.
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- The diaphragm is made from 1/8” sheet rubber, and a steel token slightly smaller than the spring, so the diaphragm is aligned.
- TIM 013.jpg (14.36 KiB) Viewed 10030 times
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- Another shot of the new version.
very nice job, however, it seems that the new diaphragm is in a different place(lower down) than the original, so how exactly does it work?
is the metal peice on the new diaphragm a coin?
is the metal peice on the new diaphragm a coin?
There are rules, and then there are hundred dollar bills.
It is lower down, which means it moves up, allowing an assload more air through at once. It's like a really high flow QEV, except 8 bucks cheaper and inline.
The metal piece is indeed a coin, a token to be exact. It's thick steel and fit right into the spring, so I used it.
The metal piece is indeed a coin, a token to be exact. It's thick steel and fit right into the spring, so I used it.
lukemc, use a fine file to file it down to about half the original width.
mopherman, where the solenoid was, there is a circle of rubber. Peel it up, then peull hard to get the diaphragm out.
I forgot to mention this:
To anyone who is using this mod, the first time I tried a valve like this, it leaked like hell out the sides. All you need is an O-ring to fit into the circular groove that the diaphragm's edge was set into.
mopherman, where the solenoid was, there is a circle of rubber. Peel it up, then peull hard to get the diaphragm out.
I forgot to mention this:
To anyone who is using this mod, the first time I tried a valve like this, it leaked like hell out the sides. All you need is an O-ring to fit into the circular groove that the diaphragm's edge was set into.
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landoklr250
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- Joined: Tue Jan 30, 2007 8:58 pm
I dont see how a modded blowgun can allow more airflow than a sprinkler valve. The opening on a blowgun isnt but like 1/4". you can get a 1" sprinkler valve and mod it.
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landoklr250
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- Joined: Tue Jan 30, 2007 8:58 pm
Sry, im an idiot but computer didnt load everything. Now i see what u mean