Knocking water pipes occur when irregular water pressure in the main supply line enters the home, according to CarneyPHC.com. The pressure is responsible for maintaining water flow throughout a home and into the faucets, but there are times when air leaks from the pipes, disrupting water circulation.Know More
Aztec Plumbing also notes that a more serious form of knocking pipes is called water hammer. This occurs when water makes a sudden stop when the faucet is turned off, spawning a jarring effect that moves the water throughout the pipes in an unstable manner. The instability of the water stops when the energy flow dissipates. According to HowStuffWorks.com, there may be much as 5 to 10 pounds of water that comes to a sudden halt. This also occurs in washing machines and dishwashers, and the hammer effect damages the quality of the pipes.
Aztec Plumbing says the most common causes for knocking pipes are air pockets, disconnected pipes and abnormally high water pressure but notes the problem can be fixed.
CarneyPHC.com recommends shutting off the main valve and flushing out remaining water from faucets and toilets. In the case of water hammer, installing water hammer arrestors lessens the shock of the water within the pipes.Learn more about Plumbing
High water pressure, loose mounting straps and water hammers are some of the reasons water pipes make noise, according to James Carey and Morris Carey, authors of "Home Maintenance For Dummies." Fixing these problems reduces the amount of noise produced by water pipes.Full Answer >
Remove air bubbles from water pipes by turning off the water supply, locating all of the faucets and turning them on, and then flushing the remaining water out of the system. Finally, close the faucets, turn the water back on and wait for the pressure to run smoothly from all of the faucets.Full Answer >
To bleed air in water pipes, attach hoses to the outside spigots, run all the faucets in the home and close the faucets once the sputtering stops. Place containers under the faucets to collect water.Full Answer >
Remove air from water pipes by opening each faucet in the home systematically, beginning with the one closest to the water main. Once all valves are open, start closing them one at a time in the same order.Full Answer >