I was just helping a friend move into a new house and noticed something odd about the plumbing. Looking under the kitchen sink ... no trap. Looking under the bathroom sink ... no trap. WTF? The drain lines are all 'new' in the sense that they are PVC, and obviously many decades newer than the house. They have good slopes, wide turns, etc, but the traps are odd. The kitchen sink drains straight down through the floor. The trap is in the joist space of the basement ceiling. Then the line goes mostly horizontally 2'-3' before teeing off to separate vent and drain. Can this really be legitimate?

:wall: I am new to this forum and semi new to plumping. My question is this, I had a kitchen faucet go bad (when using the faucet the flow was bad however when using the hose it was fine for hot and cold water), reviews I read said this happens pretty often with that model. When trying to fix the bad model i turned the hot and cold water off from under the sink. When I turned it back on the cold water was still fine, but the hot water does not get hot and is very low flow. I replaced the whole unit today. This fixed the flow issue the old one had, however still no hot water. I read something might be stuck in the line? etc, however what makes me think this might not be is the hot water was fine until I did something under the sink... Thanks in advance!