Before I surrender and call in a plumber I thought that I would ask the collective wisdom for ideas about a plumbing conundrum.
Problem is kitchen sink hot watter pressure fluctuating. After about 1 minute of normal flow of hot it mysteriously slows to about half flow. This is the only outlet in the entire house where this occurs, and it's happened over the course of a year to where I'm sure it's not being caused by hot water call in another spigot. Water pressure and flow are fine to start, and remain fine for cold. May be temperature-related, seems to start about 1 minute after water starts to get hot. Any ideas?
Plumbing system:
Municipal water, PEX tubing throughout. Hot water is Rinai on-demand (never had either a limit or slowdown of hot water anywhere else even with multiple outlets going). Delta faucet with integrated pull-out sprayer. Cheap shut-off valve under sink that I've closed off and re-openned.
Appreciate any help or ideas.
Mike
Problem is kitchen sink hot watter pressure fluctuating. After about 1 minute of normal flow of hot it mysteriously slows to about half flow. This is the only outlet in the entire house where this occurs, and it's happened over the course of a year to where I'm sure it's not being caused by hot water call in another spigot. Water pressure and flow are fine to start, and remain fine for cold. May be temperature-related, seems to start about 1 minute after water starts to get hot. Any ideas?
Plumbing system:
Municipal water, PEX tubing throughout. Hot water is Rinai on-demand (never had either a limit or slowdown of hot water anywhere else even with multiple outlets going). Delta faucet with integrated pull-out sprayer. Cheap shut-off valve under sink that I've closed off and re-openned.
Appreciate any help or ideas.
Mike