Fix for Noisy Pipes: Spray Foam on Vibrating Pipes
Fix for Noisy Pipes: Replace a Worn Washer
An outdoor faucet with a worn-out washer can make a loud vibrating noise when it’s turned on or off. You can easily replace the washer without removing the entire faucet. First, turn off the water to the faucet. Then use a wrench to remove the retaining nut.
Slide the handle and stem assembly out of the sill cock. Remove the screw at the end of the stem and remove the washer. Buy a new washer that matches the old one at any hardware store. Then reassemble the faucet. Occasionally the washer is fine, but the screw holding it is loose. If so, put a drop of thread-locking sealant (sold at hardware stores) on the threads and tighten it.
Fix for Noisy Pipes: Install a Water Hammer Arrester
Install water hammer arresters, which are available at home centers. An arrester isolates the pocket of air from the water in the pipes with a rubber gasketed piston. The closer you locate the arrester to solenoid valves, the better. The model shown is designed to mount between the spigot and the washing machine feed lines with simple hose bib connections. If necessary, add more in-line arresters in other water pipes near faucets or valves to further reduce hammering. Plus: 12 really important things your plumber wants you to know.