Ever hear a banging noise in your water pipes when someone shuts off a faucet? Or when the toilet stops filling? No, it's not the neighbor downstairs letting you know it's time to quiet down. Not this time, anyway!
That bothersome noise is called water hammer.
Water hammer is the sound of moving water being suddenly stopped cold by the closing of a valve. Think of running full speed and suddenly running into a brick wall... Ouch! The force, or inertia, of this water is transferred instantly from the water to the pipe, and then into the fixtures or framing of your home. Or in the case of my example, the pain centers of your bones! If the pipes are loosely or inadequately attached, they may visibly move. Hard to ignore, this hammer-like sound can be heard throughout all your plumbing.
Water hammer is the most pronounced with washing machines and dishwashers, which use quick-acting solenoid shutoff valves. Try flying a jet into that brick wall! However, it can and does occur with toilet valves and plain old faucets as well.
So who cares, you might say... I like the noise! Well, the problem is that water hammer is not only loud but can also be destructive. The force it exerts is hardly subtle... it can even break a poorly soldered joint or fitting! Over time, recurring water hammer can loosen the nailed mounting brackets that attach the pipes to the studs and joists in your home, leading to more movement and greater risk of leakage in joints and fittings.
Ever hear a banging noise in your water pipes when someone shuts off a faucet? Or when the toilet stops filling? No, it's not the neighbor downstairs letting you know it's time to quiet down. Not this time, anyway!That bothersome noise is called water hammer.Water hammer is the sound of moving water being suddenly stopped cold by the closing of a valve. Think of running full speed and suddenly running into a brick wall... Ouch! The force, or inertia, of this water is transferred instantly from the water to the pipe, and then into the fixtures or framing of your home. Or in the case of my example, the pain centers of your bones! If the pipes are loosely or inadequately attached, they may visibly move. Hard to ignore, this hammer-like sound can be heard throughout all your plumbing.Water hammer is the most pronounced with washing machines and dishwashers, which use quick-acting solenoid shutoff valves. Try flying a jet into that brick wall! However, it can and does occur with toilet valves and plain old faucets as well.So who cares, you might say... I like the noise! Well, the problem is that water hammer is not only loud but can also be destructive. The force it exerts is hardly subtle... it can even break a poorly soldered joint or fitting! Over time, recurring water hammer can loosen the nailed mounting brackets that attach the pipes to the studs and joists in your home, leading to more movement and greater risk of leakage in joints and fittings.
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