Ok, this is a weird one, and not very important. I've just never seen it before.
I just built a new house and the kitchen sink drain works perfectly when I run cold water into it. But when I run hot water, it backs up just a bit. Not enough to fill the sink, but enough to fill the basket/strainer and a little in the bottom of the sink. If I switch back to cold it quickly drains as it should. Mixed (lukewarm) water drains ok, too. Trap/trap arm/tail piece/etc all brand new with no obstructions.
I can live with it, just curious if anyone has ever seen this before.
I just built a new house and the kitchen sink drain works perfectly when I run cold water into it. But when I run hot water, it backs up just a bit. Not enough to fill the sink, but enough to fill the basket/strainer and a little in the bottom of the sink. If I switch back to cold it quickly drains as it should. Mixed (lukewarm) water drains ok, too. Trap/trap arm/tail piece/etc all brand new with no obstructions.
I can live with it, just curious if anyone has ever seen this before.