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spikey
Canada
680 Posts |
 Posted - 03/08/2010 : 08:53:16
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| I froze up back in January (2 and 1/2 stages and the deck) I washed it all out with the wand till it wouldn't reach any farther then I threaded a pipe cleaner tip onto the hose and used that. Took about 6 hours to remove elbows wash the pipes and put back together. |
Fight Crime: Shoot Back |
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isaacgribble
7 Posts |
Posted - 03/18/2010 : 15:20:12
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quote:
Originally posted by 06savana
Well I do not understand why this is not the way to clean out frozen pipe. I have done it this way before on a boom. The rule is do not aim it at anything you do not want to kill, just like a gun.
You could use a pressure washer but I would much rather use air at 120psi than a pressure washer at 500psi. I do not think all blow out caps are good for anything over 150psi.
You really don't get why 120 psi of air is more dangerous than 500 psi of water. A boom pipe filled with 120 psi of air is more dangerous than a pipe filled with 2000 psi of water. Air compresses then let's loose like a bomb, whereas water doesn't compress that much. |
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isaacgribble
7 Posts |
Posted - 03/18/2010 : 15:24:35
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| Think of it this way, your pump has hyd. hoses which have fluid running through them at 4750 psi. When the side of one of the hoses blows out, it is less violent than when the 120 psi air hose in the shop blows up. That's the difference between pressurized gases and fluids. |
Edited by - isaacgribble on 03/18/2010 17:45:31 |
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06savana
220 Posts |
Posted - 03/18/2010 : 17:10:46
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I will try and explain my point in more depth.
I would rather use 120psi of air than a pressure washer in this situation because I want to know where the pressure is going to be released. If I use air it is almost assured to either push the concrete out or be released with a bleed valve if it does not work. If I use a pressure washer I do not know if the blow out cap is going to blow apart or the concrete is going to be pushed out or some other weak link is going to give way. A pressure wash can exceed the pressure limits of the system. |
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Godfather
USA
1909 Posts |
Posted - 03/18/2010 : 17:39:38
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Thank you Isaac. Right on spot, I'm with you 100%.
How's Josh doing? PS: my crane is sold. |
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Speedy
Canada
4194 Posts |
Posted - 03/18/2010 : 18:05:14
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| 06savana, it would be wise in either case to have a pressure gauge ( and a bleed-off valve) to monitor what's going on. With the pressure washer, if you apply some pressure and then cut off the flow when it builds to, say 1000 psi, once the mud moves a fraction of an inch, you will see a marked reduction in pressure, as the only energy that is stored, is in what little air happens to be trapped. this is assuming there are no leaks to bleed pressure off otherwise. |
If you can't fix it with a hammer....you've got an electrical problem. |
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biged
3088 Posts |
Posted - 03/18/2010 : 19:26:10
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| Either way yall goes it I'm heading for the hills lookout Lone Ranger. |
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Blowing out frozen system
