Outdoor copper pipe loud noise

[ThomasT]

Hi everyone,

I’m trying to figure out a loud noise issue from a copper pipe at the front of my house.

There is an outdoor hose bib connected very close to the main water supply line entering the house. Whenever I turn on this faucet, especially with higher flow, the copper pipe makes a very loud noise/vibration. I already checked the water pressure, and it is under 60 psi, so it doesn’t seem excessively high. The sprinkler system is connected to the same supply line, but when I run the sprinklers, it doesn’t produce nearly as much noise

https://imgur.com/9NzZCVF

https://imgur.com/iiqBWQp

Could this be caused by the pipe size transition? I suspect the line may have been reduced from a larger supply pipe down to a 1/4" copper pipe. Could that restriction create turbulence or vibration noise?

Other details:

• Noise happens only when water is flowing
• The sound seems to come from the copper pipe itself
• House water pressure otherwise seems normal

What are the most likely causes? Poor pipe support? Water hammer? Excessive velocity from undersized pipe? Something else? How to fix it?

Any advice would be appreciated. Thanks!

 

[Jeff H Young]

change the hose bib ? check your pressure with guage ? Im assuming you dont have a regulator underground its uncommon but non existant might be a bad regulator but typically they are above ground .
maybe you are making something outta nothing water can make noise when moving but try something probebly high pressure ill bet on it costs money to be a home owner buy or borrow a guage have water dept check if its out of budget