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| judgment_arms |
 Posted: 04/25/2008 7:18 AM Post subject: |
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The Judge
Joined: 17 Oct 2006
Posts: 1243
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| bigbob12345 wrote: | | judgment_arms wrote: | Hold it, Starman, every last quick-disconnect female I’ve seen for air compressors has a working pressure of only 150psi; unless it’s Chinese, in which case it has no mention of working pressure. 
Now, hydraulic fittings, on the other hand, are rated to a working pressure of 1000psi  ; and Military quick disconnects are rated to a fail pressure of 3000psi  , unless I’m sorely mistaken. |
Well Iv taken the quick disconnects on my HP pump up to 350psi without leaking or blowing off although they will be replaced with hydrolic quick connects eventually. |
Note, I said working pressure, not burst pressure.
If I’m wrong I blame Bush, I figure every body else gets to do it… 
Last edited by judgment_arms on 04/25/2008 7:32 AM; edited 1 time in total |
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| bigbob12345 |
| Posted: 04/25/2008 7:24 AM Post subject: |
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Experienced n00b
Joined: 01 Dec 2007
Posts: 1515
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| judgment_arms wrote: | | bigbob12345 wrote: | | judgment_arms wrote: | Hold it, Starman, every last quick-disconnect female I’ve seen for air compressors has a working pressure of only 150psi; unless it’s Chinese, in which case it has no mention of working pressure.
Now, hydraulic fittings, on the other hand, are rated to a working pressure of 1000psi ; and Military quick disconnects are rated to a fail pressure of 3000psi , unless I’m sorely mistaken. |
Well Iv taken the quick disconnects on my HP pump up to 350psi without leaking or blowing off although they will be replaced with hydrolic quick connects eventually. |
Note, I said [u]working pressure[u], not burst pressure.
If I’m wrong I blame Bush, I figure every body else gets to do it… |
Oh whoops sorry for the misunderstanding
Anyways Ill probably test the pressure they fail with the 600psi my HP pump can generate.
Though I do belive you are wrong on the working pressure, I have always thought that they are rated for 250psi but dont blame bush just yet because im not completely sure. |
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| _Fnord |
| Posted: 04/25/2008 7:59 AM Post subject: |
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reenigne
Joined: 13 Feb 2007
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I've taken a mini quick connect to 900 psi with no problems. I imagine the full sized one would fail at a lower pressure than a mini, but it's still probably above 900.
The schrader valves on my hybrid work fine (600+psi), but every once in a while they start leaking because of carbon buildup. Even then all you need to do is unscrew them and clean them out.
Also, the 11x hybrid tests exposed a schrader to 1000+ psi, and it still works fine. |
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| DYI |
| Posted: 04/25/2008 11:13 AM Post subject: |
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Rear Brigadier
Joined: 07 Jul 2007
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My hydraulic quick connect have a rated working pressure of 3000psi, but both the male and female sides leak badly if disconnected.
You could always use a ball valve to isolate the shrader from the chamber during firing if you're worried about it. That's what I do on my hybrid (although it's more to do with the quick connects leaking). |
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| judgment_arms |
| Posted: 04/25/2008 11:20 AM Post subject: |
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The Judge
Joined: 17 Oct 2006
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| DYI wrote: | My hydraulic quick connect have a rated working pressure of 3000psi, but both the male and female sides leak badly if disconnected.
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Sorry, my mistake. 
I really should be more careful about my posts when high pressure gasses are involved, at least this time I under rated them…
DYI, you might try putting some thick oil or grease on the seal surfaces of you hydraulic fittings, it may help. |
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| Brian the brain |
| Posted: 04/26/2008 5:37 AM Post subject: |
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Dutch Spud Clan Leader
Joined: 05 Dec 2005
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| Use QD on my fridgepressor. Had them at 40 bar, without a problem. |
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