Questions tagged [water-hammer]

Finding and fixing the causes of water hammer, a shuddering, knocking or banging noise in water pipes.

1
vote
0answers
22 views

What is causing plumbing noise and pressure spikes after pressure regulator and hammer arrestor was installed?

I had screeching pipes & water hammer when the taps were turned off (straight after a new bathroom was installed - didn't have it beforehand). I then had a pressure regulating valve attached as ...
1
vote
2answers
232 views

How can I keep from breaking my water hammer arrestor

My dishwasher is a serious piece of equipment. It makes water hammers like crazy. So I put one of these things inline to the supply: https://www.homedepot.com/p/Quiet-Pipes-Washing-Machine-Water-...
0
votes
2answers
201 views

Water Hammer from Upstairs Toilet

After my upstairs toilet is flushed and the bowl fully refills, it sounds like a water hammer. Here's a video of the noise. At 4 seconds, when the bowl has refilled, you hear the noise: [url="https:...
0
votes
0answers
38 views

Water hammer arrestors: top floor only?

My walls are open and I'm roughing in first and second floor bathrooms. Are water hammer arrestors sensible on the first floor of a multistory supply line? For example, I'm plumbing first and second ...
0
votes
0answers
23 views

Sprinkler System Water Hammer

I have a lawn sprinkler system with a 1" feed. When it changes zones we get a 'ca-chung' in the cold water pipes (1/2 to 3/4" depending on location) in the house. I have installed a water hammer ...
0
votes
0answers
88 views

Faucet does not turn on smoothly

I have a Kohler single-control faucet on my kitchen sink that I installed about ten years ago. Starting about a year ago, it would occasionally not turn on smoothly, but would spurt with a harsh ...
1
vote
0answers
495 views

After replacing my Moen cartridge in the shower I got water hammer in the wall

I replaced my shower cartridge and after turning the water back on I got water hammer which sounded in the wall every time i turned any water in that part of the house on or especially off! I've never ...
1
vote
4answers
87 views

How to bypass this component to a Tetco Heat Pump

I have Tetco Heat Pump system that came with my house when it was purchased. About a year ago, I started hearing a water hammer in my pipes that I traced back to the solenoid(?) in the picture below. ...
2
votes
1answer
922 views

Water Hammer Arrester Shutting off Water

Problem Everything was working fine for about 3 years. However, recently my LG top-load washer has been occasionally stopping in the middle of a cycle and showing an IE error stating the washer was ...
0
votes
0answers
112 views

Cycle Stop Valve and well booster pump

I've been thinking about installing a CSV (cycle stop valve) after my F&W 2 horsepower booster pump to maintain a constant PSI at the house and put a stop to the water hammer. Has anyone done this?...
1
vote
0answers
279 views

Water hammer from neighbour's washing machine

I've got a problem with water hammer coming through a shared water main from my neighbour's house when their washing machine fills. This results in a loud thudding sound in the wall between my bedroom ...
1
vote
2answers
40 views

Sediment on side of water heater?

Here's an image of my hot water heater that's been knocking fairly hard. Does this give anyone an idea of what was done to this? It looks to me as if someone tried to remove the heating element, in ...
3
votes
3answers
1k views

Vacuum Breaker Valve on Hose Bib Humming / Noise

I have one of these vacuum breakers on my outdoor hose faucet. Every time I turn it on, it creates a loud noise in the form of a hum or drone I can hear throughout the house. While I have been able ...
2
votes
1answer
1k views

Laundry box and water hammer arrestor

I am trying to install my new washer & dryer combo. There are a few things that I am not sure since plumbing hardware and markings are a bit different in the US compared to once I used in Russia. ...
0
votes
1answer
848 views

Why is my water softener hammering during recharge?

My water softener is water hammering during recharge. Any thoughts on what might need to be fixed?
1
vote
1answer
164 views

How can I get rid of the knocking sound behind my wall when I turn any tap in the house on or off?

When we turn any of our taps on or off it creates a set pattern of three knocks behind the main bedroom wall. We have a steel framed house. How can we eliminate this sound?
3
votes
1answer
238 views

Water hammer or something else?

I'm having a bit of a mysterious problem. A couple of weeks ago I've replaced a dimmer switch in the upstairs bathroom. Of course while working on that I shut off the electricity for that part of the ...
0
votes
2answers
3k views

Loud noise in the pipes when I turn off my hot water

We have a combi boiler, and recently when you run the shower after turning the hot tap off there is a large banging in the pipes. It only seems to happen with that specific tap (as far as I can tell). ...
1
vote
2answers
2k views

Why does the washing machine cause water hammer in the pipes in my bathroom?

We recently replaced the valve in our bathtub/shower as hot water would not go to the shower faucet. Now every time the washing machine fills (located downstairs other side of house), the pipes bang ...
1
vote
2answers
4k views

How can I locate and eliminate mysterious water hammer related to humidifier?

In the morning, early, when my thermostat kicks back up, I hear a banging/rattle sound that I've determined is related to my humidifier. It only lasts about 10 seconds so by the time I get down to the ...
4
votes
3answers
6k views

How can I stop the loud banging sound in my water pipes when using my clothes washer?

We just bought a townhome and every time we use the LG Front loading washing machine there is a loud bang throughout the pipe system. I checked the back and there are already 2 water hammer arrestors ...
3
votes
1answer
2k views

Why does my Rinnai Infinity water heater fire up after turning off the cold tap?

I have a Rinnai Infinity XR20. It's about 3 years old. I've just recently noticed a peculiar issue with it that I hadn't noticed before. If I turn on a cold tap like the one to the garden hose and ...
3
votes
3answers
8k views

What causes hammering from a new diverter when other faucets are quickly turned on and off?

We're doing a minor remodel of our master bathroom, and I have replaced the 30+ year old diverter and nearby pipe with a new one from Delta. Now when any faucet in the house is turned on and off ...
10
votes
1answer
730 views

Can I reduce or eliminate water hammer without plumbing?

I have a friend who lives in an apartment with terrible water hammer problems which the management is unwilling to fix. I'm curious if there is a product or device that would attach, for instance, to ...
33
votes
4answers
47k views

How do I fix a “water hammer” problem?

When I shut off a water faucet or right after the toilet tank refills after flushing, I hear a vibrating sound in my pipes. It last between one and two seconds. On the interwebs, I found out that it'...