View Full Version : Why does my new ball valve give my water hammer
Luckyluke
Nov 19, 2008, 08:22 AM
Hi guys! I've recently fittted a newball valve into my toilet at home and now I am getting extream wate hammer doesn't happen as the vlve shuts thow! It kicks inat random intervals why is this
speedball1
Nov 19, 2008, 12:12 PM
Hi guys! iv recently fittted a newball valve into my toilet at home and now i am geting extream wate hammer dosnt happen as the vlve shuts thow! it kicks inat random intervals why is this
Can you furnish more details? Age of house. The water pressure in the house. This " ball valve" would this be the tank shut off? (see image)
"Water hammer" happens when you abruptly shut off the water. You have at least 40 pounds of pressure pushing the water flow. The weight of the water hitting a 90 degree bend causes the sound that you hear. We put in air chambers to cushion the hammer much like the shocks on your car.
Back in the 60's we were required to to put air chambers on all bath lavatories and kitchen sinks. Over time water and condensate built up in them and they must be recharged. First turn off the house at the main house shut off valve. Then open hot and cold faucets at the farthest bathroom to prevent air lock.(This is important.) You will find under each fixture little brass or chrome valves. These are called angle stops. With a small pail held under the angle stop to catch the run off look under the handle of the stop and you will see a nut with the stem running through it. This is called the bonnet packing nut. Put your wrench on it and back it off counterclockwise. Now open the stop and remove the stem and washer assembly, The stop will began to drain. When it has quit draining reassemble the stop and move on to the next one. Do this on each one of your angle stops. There will be six of them in a two bath home. When you are done, close off the faucets you have opened, turn on the water to the house, and give yourself a pat on the back.
You have just recharged your air chambers and saved yourself a hefty service call bill. Hope this helps you out and thank you for rating my reply. TOM
massplumber2008
Nov 19, 2008, 05:00 PM
Hey Tom...
I'm wondering if Lucky Luke installed a fill valve in toilet tank... not too many toilets with ball valves in the tank... :)
Lucky luke... did you install a FILL VALVE inside the toilet tank? Or a shutoff outside the tank? Let us know.
If you installed a fill valve then it is possible that the washer under the cap assembly is loose and causing a chatter/sputter effect.
Let us know more here... easy to fix this...
MARK
mygirlsdad77
Nov 19, 2008, 05:25 PM
Okay, need to know if you installed a ball valve(shutoff under toilet tank) or a ball cock( fill valve in toilet tank. The pic speedball posted is actually a ball valve type shut off. If you replace the stop(ball valve or other), you most likely had to shut the main water in house off. When you turned the water to house back on, you may have gotten debrees stuck in fill valve(in the tank). I would start by cleaning fill valve( if it is new). Or replace fill valve.