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| Tyro |
 Posted: 10/18/2006 3:04 AM Post subject: Pressure ratings |
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Master Sergeant
Joined: 07 Oct 2006
Posts: 154
45.23 Spud Bux
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I have a few questions about pressure ratings that might be simple to answer.
What are plastic Sprinkler valves rated to?
Does the BlowGun on a moded sprinkler valve have to be rated to 200 PSI? (if i would want to pressure it that high)
What i mean is. Is the pressure in the Chamber as much as on the blow gun? |
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| SquishY |
| Posted: 10/18/2006 3:11 AM Post subject: |
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Master Sergeant
Joined: 07 Feb 2006
Posts: 159
600.49 Spud Bux
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| Yes the pressure is the same being that the diaphram needs the same on both sides to equalize and stay shut. The air gun rating isn't as important if you have a decent one. I can't imagine them being rated to high but they should hold more than enough for a decent cannon. I've been going with ball valves the next size up from the barrel to allow more flow even if it doesn't open all the way but maybe you could try a piston, those will be my next choice once I get a job to support this new habit. |
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| Tyro |
| Posted: 10/18/2006 3:17 AM Post subject: |
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Master Sergeant
Joined: 07 Oct 2006
Posts: 154
45.23 Spud Bux
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| so a 90PSI blowgun, would that do the job, or would i need a 150 PSI |
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| Pete Zaria |
| Posted: 10/18/2006 3:23 AM Post subject: |
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Resident Computer Guru
Joined: 31 Mar 2006
Posts: 961
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In all probability the 90psi blowgun would work fine, but it isn't safe. If you choose to use it, put the blowgun on the end of the hose to your compressor and pressurize it to 150 psi with the blowgun far away from you, and leave it pressurized for a few hours. If it doesn't blow up... it's *probably* ok, but again, still not that safe. Couldn't you use a small ball valve instead?
Peace,
Pete Zaria. |
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| MrCrowley |
| Posted: 10/18/2006 3:28 AM Post subject: |
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Blizzard of Ozz
Joined: 23 Jun 2006
Posts: 5949
2657.43 Spud Bux
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| a 90psi one might leak at 200psi and same with the sprink vavle as theyre only rated to 150psi. |
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| Tyro |
| Posted: 10/18/2006 5:38 AM Post subject: |
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Master Sergeant
Joined: 07 Oct 2006
Posts: 154
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ok, i saw a video on you tube with 2 guys pumping one up to 200Psi with a solenoid ( i think, he says it's electronically controled.)
But theirs is brass by the looks of it, how mcuh more would you have to pay for a brass one?
http://www.youtube.com/watch?v=lzmboE8XJDE |
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| Hotwired |
| Posted: 10/19/2006 3:52 AM Post subject: |
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UK Spudgunner
Joined: 13 Oct 2006
Posts: 1689
3571.44 Spud Bux
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| Metal solenoids cost a hell of a lot more. Add $200+ to your bill if you're having a brass one instead of a plastic one. |
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