I am curious about a plumbing issue.
When I turn on a hot water plumbing fixture, over the first few minutes the flow decreases to nearly zero flow.
This does not happen on all fixtures on the branch line. The line is horizonal and the inlet pressure at the regulator is 105 psi - of course it drops past the regulator, but is still more that adequate.
Cold water does not exhibit this issue. All shut-off valves are open and have been cleaned and checked. All new seats and washers on the fixtures, also I did not noticethis prior to the new washers and seats.
I am curious as what could cause the decrease in flow on olny the hot side.