Reply To: Vibration in pipes when hot water in kitchen sink is turned on – an intermittent problem and does not occur when you first turn on the hot water only after it has run for several minutes.

[Mark]

Mark:–Go to the water heater and check to see if you fully opened the water supply valve after you worked on it. Sometimes old stop valves will have a washer that vibrates between the stem and seat if not fully opened. This humming or chatter is transmitted by the piping to other areas of the house. Hope that solves your problem…Bud.