Ok pulling your leg.
This is a TPR valve running from a 30 gal electric that not only runs up hill but also terminates at a faucet type spout in the kitchen sink.
From what I understand all of the water heaters in this one of Chicago’s most famous buildings (Marina City) is installed in just this way.
Here is a picture of the twin buildings that may help remind you of this structure which holds House of Blues and has been featured in many movies.
Most famous may be when Steve McQueen backed out of one of the open air parking slots that fill the lower floors and in to the Chicago River in Man Hunter.
Water heater TPR valve should never discharge into the sink, tub, shower stall, etc. Emergency discharge of hot water / steam might cause severe injury. Keep the discharge pipe low, always pointing down and within 6″ from the floor level – you may also pipe it directly into the floor drain.
**Discharge **pipefrom the water heater TPR valve **must **always run downhill - if the TPR valve opens occasionally, and water / steam instead of being drained, accumulates / floods the valve, it might eventually cause its corrosion, and prevent it from functioning properly or at all.
I never said that it was OK to run it uphill, or to use the flexible connectors for discharge lines, for that matter. I also suspect that the spout is less than full diameter of the valve discharge. Considering that the only way to route it from below the sink into the sink is to run it uphill, then the installation is not proper. However it does have the required features that I did mention in my post.
Also, as was indicated by others "check this house .com " is hardly an authoratative source for installation standards (might as well quote HG TV). You might reference appliable codes (I know you are not a code inspector) or manufacturer installaton documentation.