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| pat123 |
 Posted: 06/18/2008 14:31 PM Post subject: safety questions |
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Lieutenant Colonel
Joined: 23 Dec 2006
Posts: 474
101.26 Spud Bux
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I have a few questions about my newest gun
1. is it safe to use a blowgun at 300psi
2. is it ok to use sch40 1 inch pipe as a barrel
3. i had to use a sch80 pvc coupler as part of th episton is that ok at 300psi |
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| TurboSuper |
| Posted: 06/18/2008 14:37 PM Post subject: Re: safety questions |
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Colonel
Joined: 16 Jun 2005
Posts: 644
969.09 Spud Bux
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| pat123 wrote: | I have a few questions about my newest gun
1. is it safe to use a blowgun at 300psi
2. is it ok to use sch40 1 inch pipe as a barrel
3. i had to use a sch80 pvc coupler as part of th episton is that ok at 300psi |
1. The blowguns I see are rated to 70 PSI. I've used them up to 120 though, 300 may be pushing it.
2. Depends, the schedule is not a pressure rating.
3. Should be. |
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| bigbob12345 |
| Posted: 06/18/2008 14:44 PM Post subject: |
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Experienced n00b
Joined: 01 Dec 2007
Posts: 1516
370.57 Spud Bux
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Just adding in my opinions
1. Yes, Ive pressure tested them to 600psi
2. Yes, as long as it is pressure rated
3. No |
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| jackssmirkingrevenge |
| Posted: 06/18/2008 14:51 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 6475
9857.68 Spud Bux
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| I think the major problem with using blowguns at high pressure is not them failing but actually using them, as usually it's the pressure that's keeping them shut. |
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| psycix |
| Posted: 06/18/2008 15:02 PM Post subject: |
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Major General
Joined: 25 Jun 2007
Posts: 1581
58.41 Spud Bux
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1 Most blowguns can be used way above their rating. The first symptoms of overpressure are leaking and jamming. Also an O-ring may get disaligned.
2 The rating tells you what your limits are.
3 When you use a proper bumper, yes. |
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| DYI |
| Posted: 06/18/2008 20:55 PM Post subject: |
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Rear Brigadier
Joined: 07 Jul 2007
Posts: 2200
1264.15 Spud Bux
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| Quote: | I have a few questions about my newest gun
1. is it safe to use a blowgun at 300psi
2. is it ok to use sch40 1 inch pipe as a barrel
3. i had to use a sch80 pvc coupler as part of th episton is that ok at 300psi
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1. Is it a 300psi+ rated blowgun?
2. Sure, as long as it isn't PVC or any other weak, shrapnel prone material.
3. Is it inside, or outside the casing? I'm assuming it's outside, or you wouldn't have asked, so I'd say that it should be fine, but don't come crying to me if it gets your carotid artery. Remember, PVC has very low shock resistance. |
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| pat123 |
| Posted: 06/20/2008 15:58 PM Post subject: |
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Lieutenant Colonel
Joined: 23 Dec 2006
Posts: 474
101.26 Spud Bux
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1. the blowgun is just a regular one i got at lowes
2. yeah it is pvc but i just found a rating on the pipe i cut it from. its rating is 330psi.
3. if i wrapped it in fiberglass would it be much stronger? |
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| SpudFarm |
| Posted: 06/20/2008 16:09 PM Post subject: |
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Hybrid Guy
Joined: 04 Nov 2006
Posts: 1984
950.98 Spud Bux
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| it will be much stronger if you do like DYI did on his barrel for the MEH-20 (?) |
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| POLAND_SPUD |
| Posted: 06/20/2008 16:44 PM Post subject: |
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Brigadier General
Joined: 13 Oct 2007
Posts: 837
2047.55 Spud Bux
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one quick question
how safe (or not safe) would it be to use a 1/2" galvanized welded pipe with (unregulated) CO2? |
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