My house is about 6 years old, and has a well water supply system with
a submersible pump. I recently had to replace the well water system's
pressure tank due to a ruptured bladder. I had a plumber do the job.
Immediately after replacing the tank we began experiencing a nasty
water hammer. The hammer occurs when the pump starts - but not every
time. From searching messages on this group, and from other sources,
I believe that the likely source of the problem is that the check
valve(s) in the pump discharge line are leaking by. What puzzles me
is, why did the problem start when the pressure tank was replaced? Is
this just a coincidence, or is there some other possible reason for
the water hammer?
No expert in any way here, but ... I would have someone inspect, or find out
how to do it yourself, the newly installed tank. If this started with that
change, I think it's likely the tank isn 't charged properly or isn't the
right tank for the application. It seems simple but there are quite a few
details involved with water systems.
To me, it doesn't sound like a check valve problem. If it is though, you
should be able to tell by air that comes out of the tank. If the valve
leaks, then, after enough time, it IS going to allow air into the line. Air
will show up easily. Air by the way, is far more compressible than water.
Air is used in the stand-ups near your faucets specifically to provide a
damper for water hammering.
It is possible that it is related to his work, if he upped the water
pressure. I can also think of a couple of things that could have been
related to his work, like pipes that were not properly secured after his
work. As I said "If he is honest..."
My guess then is the higher pressure only showed the existing problem.
He did not cause it, if that was the case. My suggestion is use the
arrestors. You might try draining all the pipes, but in this case I will
guess that will not work.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.