I was flipping channels and found the show "Ed The Plumber", the topic
was water hammer. In the last few minutes of the show it showed him
installing water hammer arrestors on the hot and cold water washing
machine inlets. They looked like small blue globes.
I have a mild water hammer problem, and figure that I would shoot for
the simplest solution.
http://www.urlbee.com?7537 (the last photo in article).
They look like they have a greater volume than the smaller ones I've
seen. Anyone know where I can get these water hammer arrestors?
If you have a water hammer problem try draining the system to get air back
in it. What they use to do is stick a piece of pipe ( 8 to 10 inches)
vertical with a cap this will trap air and work for shock absorber. They
usually put a tee at the water supplies .Eventually the water will absorb
the air that's the advantage of pre made one. But it might be sized for the
fixture unites it has to handle.
On Mon, 31 Jul 2006 04:56:41 GMT, "Sacramento Dave"
I've heard these dead legs loose their effeciency over time, to almost
zero due to water logging. The air bubble disappears.
Now these are the examples I saw on tv,
I don't know if the installation is correct, since not feeling that
romex connection that was installed is the best.
tom @ www.NoCostAds.com
In may homes arrestors are built in, but they are designed in a way that
over time they loose their ability to work. You can fix that good as new by
turning off your water and draining the pipes by opening the lowest faucet
(don't use the one on the hot water tank.) Let the water drain out and then
close it back up and turn on the water. Let the water out of the pipes buy
just cracking each faucet to let the air out. That may well take care of it
The commercial ones like you are talking about work on the same
principle, but often are designed in such a way that they are not subject to
In one of my fluidics class we discussed how easy it is to make a
water-hammer arrestor. Near the valve install a "T" with the leg
pointed up. Attach a capped 10" pipe to the leg. This will cushion
the hammer and extend the life of the valve.
I don't know about those...I haven't looked at the picture, but I
bought a couple at HD or Lowes or most likely Hechingers. They
weren't more than 4 dollars 10 or 15 years ago, and were as long as my
middle finger and as thick as my thumb, and they worked fine.
I put them on the back of my washing machine, because they had garden
hose connections and it unnerved me to put them on the washing machine
faucets, even though with the diaphragm inside each one, they would
work sideways or even upside down until the diaphragms broke. But I
didn't like them pointing sideways. On the washing machine they point
up, so they'll work for a while even after the diaphragms break.
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