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Started By
Message
Has anyone else here ever created Water Hammer?
Posted on 1/7/21 at 6:17 pm
Posted on 1/7/21 at 6:17 pm
Not as fun as it sounds.
Changed out a water fill valve on a toilet and water hammer occurred after I turned on the water.
LINK
Changed out a water fill valve on a toilet and water hammer occurred after I turned on the water.
LINK
17
Posted on 1/7/21 at 6:20 pm to Fusaichi Pegasus
(no message)
This post was edited on 1/18/21 at 8:54 pm
Posted on 1/7/21 at 6:20 pm to Fusaichi Pegasus
That’s Operator life Baw
Posted on 1/7/21 at 6:22 pm to Fusaichi Pegasus
Did it flood the bathroom?
Posted on 1/7/21 at 6:22 pm to Fusaichi Pegasus
I was just thinking about that the other day...
Posted on 1/7/21 at 6:25 pm to Texastiger43
quote:
Did it flood the bathroom?
No
Sounded like the walls were going to explode.
I was proud and strutting that I replaced the valve with no issues/leaks and then BAM
Posted on 1/7/21 at 7:05 pm to Fusaichi Pegasus
Water hammer is awesome!
Posted on 1/7/21 at 7:09 pm to Fusaichi Pegasus
Never to the point of causing damage. It is always concerning when water is turned off for maintenance on lines. A couple years ago workers installing natural gas lines twice hit the water main and had to turn off the water to fix it. Both times when the water was turned back on I heard sounds coming out of the toilet that sounded like monsters. I even had an outside hydrant on the second time, but it didn't help much. I had to clean out all the faucet screens and toilet tanks had dirt and debris in them. I think those frickers doing the work only knew how to locate the water main by hitting the damn thing.
This post was edited on 1/7/21 at 7:11 pm
Posted on 1/7/21 at 7:16 pm to shaqtaw
quote:
How did you fix it
Ran all faucets, Shut off water to the house, drained all the lines
Waited 10 mins, then turned back on main
Ran water for 5mins and then shut off faucets
Reduced valve by the toilet and problem went away
I think if I just reduced the valve by the toilet it would have fixed it
This post was edited on 1/7/21 at 7:24 pm
Posted on 1/7/21 at 7:32 pm to Fusaichi Pegasus
Gaming Board
Posted on 1/7/21 at 7:37 pm to Fusaichi Pegasus
This
Posted on 1/7/21 at 7:40 pm to Fusaichi Pegasus
You think that’s bad, try a steam hammer in an old rusty plant coming off a 600 LB boiler.
Scare the shite out of you
Scare the shite out of you
Posted on 1/7/21 at 7:45 pm to fr33manator
We hammered our main steam line at 1100#, scared the frick out my shift team. Was not fun standing there relieving it.
Posted on 1/7/21 at 8:05 pm to Fusaichi Pegasus
If you've ever shut off a faucet, especially in the basement of an older house, and heard the pipes rattle or knock, that's the same phenomenon.
Fluid is traveling through a pipe. It has momentum. When a valve closes, the flow energy is converted to pressure. The pressure wave travels back upstream of the blockage at the wavespeed of sound in that fluid. That pressure wave exerts a force on the outside pipe walls. This can cause rupture if the pressure if the pressure exceeds the pipe limits. It happens at faulty welds.
It's a concern in any liquid pipeline regardless of fluid type. In large pump stations, it can knock pipes off of pipe racks if the system was designed poorly.
Fluid is traveling through a pipe. It has momentum. When a valve closes, the flow energy is converted to pressure. The pressure wave travels back upstream of the blockage at the wavespeed of sound in that fluid. That pressure wave exerts a force on the outside pipe walls. This can cause rupture if the pressure if the pressure exceeds the pipe limits. It happens at faulty welds.
It's a concern in any liquid pipeline regardless of fluid type. In large pump stations, it can knock pipes off of pipe racks if the system was designed poorly.
Posted on 1/7/21 at 8:33 pm to Fusaichi Pegasus
Anytime he hits the pool-
Posted on 1/7/21 at 8:35 pm to Fusaichi Pegasus
You ought to see what happens in a plant when that happens. It looks like it’s snowing from all the insulation falling off
Posted on 1/7/21 at 8:36 pm to Fusaichi Pegasus
Took a college short course on pipeline hydraulics back in the 90s for work. The professor was Dr Wylie retired from U of Michigan who had written the textbook we used.
At the end of the course he had a slide show of pipeline incidents caused by over pressuring due to water hammer and other design flaws. Needless to say, the results were pretty catastrophic and even killed people in some cases.
Not something to mess around with.
At the end of the course he had a slide show of pipeline incidents caused by over pressuring due to water hammer and other design flaws. Needless to say, the results were pretty catastrophic and even killed people in some cases.
Not something to mess around with.
Posted on 1/7/21 at 9:19 pm to Fusaichi Pegasus
quote:
I think if I just reduced the valve by the toilet it would have fixed it
Turning these on or off is the only time I've encountered water hammer.
Posted on 1/7/21 at 9:57 pm to Fusaichi Pegasus
They have these things called water hammer arresters. You know, to prevent water hammer.
Look it up.
Look it up.
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