Noisy Faucet Hot Water Value (Sink & Tub)

[dkmsl]

When I turn the hot water faucet on or off, it makes a loud noise (like a trumpet) and the handle rattles/vibrates. If I turn the hot water on/off real FAST, the problem is minimized. Any ideas? I don't believe this is "water hammer" because it only happens in 1 of the 3 bathrooms in the house. Any advice will be appreciated.

 

[Redwood]

you have a loose washer flapping in the breeze as water comes up out of the seat and rushes past the washer on the end of the stem...

Stem:

Seat: