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Banging water pipes when dishwasher takes in water. This has happened only after I put a new shower in & I had an air lock. This has now gone. The dishwasher has an aqua stop, should this be primed

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Hi friend

show the good plubler its take $20 ur problem will sloves


Posted on Apr 06, 2008


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1 Answer

Shower valve making banging noise pressure balanced even after changing cartrige

turn hose water off. open facet at lowest level to drain out lines. open a few faucets around the house to let air in. then close everything up. turn water back on. repressurize system by turning some faucets back on. see if it still happens. this is letting air back into any anti-water hammer devices that might be in system. sometimes they loose the air in them that makes them work. this should add air back in. good luck.

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What type of hammer arrestor do I buy to fix banging pipes after installing a new Moen posi-temp cartridge?

Banging pipes are a result of improper piping support. If the piping is secured, the banging will stop. If your only option is to install chambers for water hammer, any will do. Their only purpose is to hold air.

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Baxi banging noise

noise in water pipes is called water hammer and is when the water flow pulsates from an inconsistent flow. Water has mass and when stopped suddenly there is a pressure build up which moves any loose pipes. It can be fixed by putting more securing or mounting saddles on the pipe to hold it steady or you can get a pressure accumulator and it takes up the pressure build up and stops the noise. It is most prevalent when sudden stop taps are used such as ceramic taps or stop cocks and less so when you have to screw down the tap to shut off the water.

Jun 24, 2013 | Heating & Cooling

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Ever since I had This American Standard Williamburg shower control valve I get a terrible water hammer at comfort tempetures. My friend the plumber who installed it pulled the Pressure balance valve out...

NO DONT replace anything > You have what id call water hammer. This happends when water gets in the air chambers, Air chambers are nothing more than a 1 foot or 2 foot long section of pipe with a cap on it. When its working air gets trapped in the pipe and you can compress air but not water, so if the air is gone BANG BANG goes the pipe.

takes 10 mins to fix. turn off the water to the house out side. open every faucet in the house and the hose fauects out side. wait 5 mins and then close everything and turn on the water. You will see ait come out of the faucets it will stop after just a momnet or two.

That should do it. check your tub shower valve and it will work fine

Thanks for asking us to help

Hope this worked for you Tom

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1 Answer

I seem to have air trapped in the Pegasus single handle shower control. It creates a banging noise when turned on of off. Any suggestions?

A water hammer effect is what is happening. Maybe due to high pressure or pipes not properly supported in the wall near the valve. These valves shut water on and off quick causing a sudden stop in flow of water. High water pressure will make banging noises. These are couple of thing's that may be going on if not check out link's below.

Below I have included some links that I hope will help you solve your problem.

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1 Answer

Cold water suddenly shuts off during shower.

sounds like you may have "air" in the pipes and that bang has slamed the water reg valve shut hard

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1 Answer

At certain settings the shower shudders. Not air in line as it only happens at certain temperature settings.

That problem you described is called "hammering" and usually happens in older homes that don't have anti-hammer tubes installed on the water valves at each device (sinks, toilets, showers, clothes washer, etc.) When the water is turned on the sudden flow increases the pressure in the lines and when the valve(s) are shut off, you'll get a loud banging sound.

In the case of the shower, it is likely due to the hot water and cold water lines cavitating since cold water is also entering the hot water tank to replenish the hot water you're drawing out at the shower.

It's not economically feasible to go back and rip open all the walls behind every plumbing faucet in your house to install anti-hammer tubes, but you can install a small expansion tank on the main water line where it enters your house to help absorb the pressure variables along with a 18" long "bang tube" that should help eliminate the pipe shudder you're getting.

You might want to get a plumber to look at your particular situation, as it is difficult to be 100% certain as to what exactly is causing your dilemma without seeing and hearing it firsthand. I've provided possible reasons and solutions based on my experience with similar situations.

Hope this helps and best regards!

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Smeg dishwasher intermittenty opens and shuts off the water inlet

if you put clamps on the pipes this sound will may need to get to the pipes in the wall near the unit,also you maybe overloading the unit if water remains in unit.try less and see what happens.

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1 Answer

Our new LG dishwasher makes loud clunking noise

I believe this is a brand new dishwasher. Please listen carefully to determine of the sound you hear (clunk) is being made inside the dishwasher or is it being made near by. Most times, the problem is that the hot water pipe is baking the noise when the dishwasher closes the water inlet valve ... and the pipe goes "clunk"
I have not had an LG dishwasher make a clunking sound inside itself when the cycle changes. Also, because this dishwasher is so very quiet (well insulated) the pipe banging would be louder than something inside the Dishwasher.
If you have access to the hot water pipe, listen very near it when the cycle changes for the sound. Follow that pipe (hot water) pipe back and insulate it at the point it is banging. (or get a plumber to evaluate and resolve.)
Please get back to me with what you find, OK?
Good Luck!

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