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Blowgun max 30psi?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Blowgun max 30psi?

Unread postAuthor: Alster370 » Thu Jun 02, 2011 9:43 am

It says on the back packaging of my blowgun "In the interest of user safety this tool should not be used at pressures exceeding 2 bar or 30psi" please tell me they all say this and that they are fine for much higher pressures. :x
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Unread postAuthor: warhead052 » Thu Jun 02, 2011 9:47 am

Hahahaha, wow. I have a Kobalt blow gun, and I have used at 130 psi, and nothing happened.
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Unread postAuthor: Alster370 » Thu Jun 02, 2011 9:48 am

Well its the first one I have ever bought. Do they all say that though? Or did I just get a crap one as usual :lol:
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Unread postAuthor: jackssmirkingrevenge » Thu Jun 02, 2011 9:55 am

Show us the model.

I've used this type to 500 psi without leaks or explosions.

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Unread postAuthor: Alster370 » Thu Jun 02, 2011 9:58 am

Its a Draper blowgun, identical to the one you posted. what is the output thread by the way? i Went down to PTS and they didn't have one small enough :?

http://www.amazon.co.uk/Draper-Tools-20 ... 24&sr=8-11
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Unread postAuthor: jackssmirkingrevenge » Thu Jun 02, 2011 10:03 am

Alster370 wrote:what is the output thread by the way? i Went down to PTS and they didn't have one small enough


1/8", compatible with paintball fittings.
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Unread postAuthor: warhead052 » Thu Jun 02, 2011 10:49 am

Jack, are you serious?! Like, paintball qev's?
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Unread postAuthor: Crna Legija » Thu Jun 02, 2011 10:57 am

warhead052 wrote:Jack, are you serious?! Like, paintball qev's?


no, but paint ball QD and slide valves remote lines, the qevs are like 1or 2 mm threads tiny
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Unread postAuthor: al-xg » Thu Jun 02, 2011 11:00 am

Paintball QEVs, are even smaller, like M5. And they don't really have a port to attach a barrel to.

Paintball 1/8" are NPT, they do work with BSP threads with PTFE tape.
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Unread postAuthor: warhead052 » Thu Jun 02, 2011 11:01 am

Ah ok. I understand now. Thanks for clearing that up.
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Unread postAuthor: shiny455 » Thu Jun 02, 2011 6:15 pm

i have a couple of questions about this. first is it ok to use the output as the input, will it hold the pressure the same? and if i get an 1/8" nipple whats the best way to install this in a brass fitting. Im hoping for it to go to 400psi and i tried drilling a hole and epoxying it in place but it didnt seem to work should i just try it again. its a bit hard to get imperial taps here.
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Unread postAuthor: jimmy101 » Thu Jun 02, 2011 6:38 pm

For most blowguns the output and inputs are the same, at least in terms of the internals. The threads are often different.

Most blowguns have sillyly (?) low "pressure ratings". The general thinking is it has to do with the dangers of a blast of compressed air to say a person's eye, and not with the pressure rating of the blowgun itself.
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Unread postAuthor: jackssmirkingrevenge » Thu Jun 02, 2011 6:48 pm

al-xg wrote:Paintball 1/8" are NPT, they do work with BSP threads with Araldite.


Yep.

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Unread postAuthor: metalmeltr » Thu Jun 02, 2011 6:58 pm

The 30psi is simply for OSHA aproval and to meet safety regulations.
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Unread postAuthor: chinnerz » Fri Jun 03, 2011 2:28 am

you can't tell how good a blow gun is just from looking at it, i have 2 i bought recently. One of them is plastic on the inside :S (still holds 100psi no leaks)
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