Strange flow from hot water
When I turn on the hot water tap on my basement utility sink, it runs fine for a moment or two, then with a hammer clunk, stops. If I continue to open the tap well past the normal point, the water resumes the flow, tho at a reduced rate. I think that hot water throughout the house runs slower than the cold, although the phenomenon with the utility sink tap does not occur anywhere else. I have no idea what causes this.