Banging when turning off kitchen faucet

[Martini]

My tenant lives on the second floor (I'm on the first) and there has been a banging noise (probably since she recently had a new kitchen faucet installed without telling me). It's a single harsh bang when the faucet is turned off quickly, but doesn't occur when turned off even a little slower. I asked her to turn off slowly, but she always forgets.

I read that turning off the main supply, turning water faucets on at highest and lowest points including the problematic faucet could do the trick, but that didn't work.

I also read it could be due to unsecured pipes under the sink. They are definitely unsecured and can be shaken around by hand, but they were always like that.

Anyone know if the product below will do the trick? I guess that can be installed with no soldering? Look like the right size?

https://www.amazon.com/MINI-RSTR-STOPLF-SIOUX-MfrPartNo-660-GTR1/dp/B008RI63BW

 

[Jeff H Young]

some people throttle down the shut off valves under the sink I dont see any shut offs ? Also if the flow restrictor at the aerator is removed it makes the problem worse. but if it has shut offs close those down to where water comes out slower it might help hammer arestors might help too

 

[Sponsor]

 

[Martini]

I noticed that the two sides of the Amazon product I linked to look differently. Can someone please verify that this product goes on easily with a few turns of a wrench? Thank you.

https://www.amazon.com/Mini-Rester-Water-Hammer-Arrestor-D/dp/B01N34QEIU

 

[Fitter30]

When you shut the water off and opened all the valve Leave the system open minimum 1.5 hours longer if possible. Any air locked water hopefully it will drain out. There are air chambers to help with the.banging that can get water log and need draining. Refill system slowly.

 

[Reach4]

Water hammer arrestors work. I doubt that the size you want is the one you linked to.


https://www.supplyhouse.com/Water-Hammer-Arrestors-10951000 includes more

Click 3/8 on the left for some that might be right. Depends on size.