Some hotwater pipes are not copper. Is it right?
Hi, all
Our bathroom is being renovated. The plumber just installed hotwater pipes behind the wall today. I noticed that majority of pipes are made of copper but some are not, they look like black plastic and about 50cm to 80cm long. The plumber said they are used to prevent vibration when the tap is turned on. As far as I know, in the old days, all hotwater pipes were made of copper/brass.
Is there something wrong or I am far behind new technology?
Thank you
Jessie