Sunday, March 2, 2014

what-causes-cold-water-pipes-to-knock

When faucets are turned off, pipes can make a knocking sound.


If you’ve ever been using cold or hot water and turned off the faucet suddenly, you may have heard a knocking sound somewhere in your pipes. This is not an uncommon problem and can be remedied with some simple do-it-yourself fixes.


What Happens when You Turn on the Faucet?


Water mains that deliver water to your home are carrying a lot of water that is under pressure. When you turn on the faucet in your home, the pressure of the water behind it is released, letting the water flow freely.


What Happens when You Turn off the Faucet?


As the water flows freely through your faucet, the pressure holding it is released. When you turn off that faucet, all that water flowing under pressure is stopped (imagine trying to stop the flow of a river). It has nowhere to go, except back into the water pipes.


Where Does the Sound come From?


When all that water under pressure flows back into the pipes, it can cause vibration, banging or knocking sounds in the pipes. The sound will be amplified in pipes that are not secured properly.


Fix It


The way to prevent your pipes from knocking when you turn off the faucet is to ensure they’re secure. You can install a water hammer arrester (follow directions on package or hire a plumber) that dissipates the noise caused by the returning water pressure. It’s also wise to install bracing and brackets to support and stabilize your pipes. These two tactics will remove the knocking sound from your pipes.








Related Posts:




  • What Causes Pipes To Have A Knocking Sound When Water Is Turned On

    Knocking pipes may burst the connectors and cause a leak.Knocking pipes can wake you up in the middle of the night or make showering into a noisy experience. These pipes can also be damaged by the...


  • What Causes A Faucet To Knock

    If your faucet knocks, there is a way to fix it.Faucet knocking is a phenomena that occurs in many homes today due to an exchange of energy inside your plumbing. Various forces inside your plumbin...


  • What Causes Noise In Water Pipes

    Noises in water pipes can range from soft hisses to loud hammering sounds. Figuring out the causes of the noises in your water pipes will help you protect your home from potential water damage.The...


  • Get Air Out Of Water Pipes In The Home

    Turn on all your faucets to get air out of water pipes.Air locks (or bubbles) in your water pipes can occur after a temporary interruption in water pressure from a municipal water supply or replac...


  • Stop Water Pipes From Making Noise

    Water pipes can make a variety of different sounds.If your house is occasionally filled with the sounds of banging, clanging, whistling and rattling, you may have a problem with your pipes. Noisy...