Fluid Dynamics Mystery (To Me)

JohnDG: Thanks for your response, which is probably correct. I did not suspect that surface tension might be involved. Incidentally, your's was the only response which addressed my question -- the others (so far) offerred me plumbing advice.

Welcome to CR4. You have discovered, early on, you can't get rid of the pitfalls/beauties of the forum. We all think we know more than you do, and, each other.

So, while JohnDG gave the answer to your original question, you may have also gotten some good advice on how to correct the actual problem of, "the spray of hot water is ill-formed and weak".

I had to have prostate surgery to fix mine.

lyn...The plumbing advice I got was appreciated, and I thank all who sent it. However, as far as "rating" their comments, I was given only 2 choices, essentially either relevant (to my question) or not. Although I evidently had a plumbing problem, that was not the substance of my post. Incidentally, I may also need prostate surgery.

Never mind the rating. You'll figure out that it doesn't matter.

Just go with the flow. Get it? Flow? That's the other thing you'll have to come to grips with here. Humor, our our brand of it.

I had mine (surgery) a year ago, yesterday. PM me if you'd like. (Click on my name and click on send lyn a PM or whatever it says.)

To be fair, kramarat's post #2 also gave a plausible reason for the observed phenomenon - as well as suggesting some practical advice.

You are right. I re-rated kramarat's post, and thanked him.

Sounds like a partial clog inside the "Mixing Valve body". Take it apart if you can and service it...clean thoroughly. .......or if that doesn't work, replace the offending faucet(s) with new ones.

You never mentioned how old these faucet(s) are.

Take the thing apart until you find these. Check if the hot one has a hot tap washer. If not it will expand and contract by getting it touch with the cold flow. There are universal tap washers.

Ah, turn off the mains

Although JohnDG's answer sure was nice and scientific, I agree with the others that you probably have a problem at the mixing valve. That valve is a miracle of engineering IMHO and probably easily confused by debris. A sliver of teflon tape can be enough to mess up fancy fluid controls.

Thanks for your input. However I suspect THIS mixing valve, at the base of the spout, is no engineering miracle but JUST AN APERTURE which admits randomly mixed hot and cold flow from a tube connecting the two separate faucets. It does not proportion either flow.

TO ALL who have responded to my original thread (repeated above), thank you! I am new to forums, so please excuse any improprieties. Because I am pressed for time, I cannot continue to respond to comments, and must withdraw from this thread.

Thanks, again.

Wolfus

You're welcome - and welcome back when you have time. Nice to have a new gentlemanly (_{gentlewomanly?}) member around - they tend to be few and far between.

An old Scot's toast:

"Here's tae us, wha's like us!"

(response)

"Gie few - an' thur a' deid!"

JohnDG: Thanks for your invite to come back (I will), and the compliment. PS: I'm a guy.