I just moved into a new house and I have a bath/shower that turns on by itself. This happens a few hours after someone uses it. The mechanism to turn on the bath is a pull out to turn the water on type. When I go in to see why the water is running (which is full on) the mechanism is pulled out in the on position.

believe it or not, things like this happen to certain valves.
the solution is to take the valve apart and wipe off some of the grease on the sliding part of the cartridge. then hope that less grease results in less friction loss...

.... you mean: less grease results in MORE friction loss

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

mais non mon ami.. friction loss makes it more slippery. MORE friction would make it harder to slide.

So that must mean that MORE "friction loss" in a water pipe means it will flow better. I guess it is how they teach physics and math in MA.

Hi,

I think your valve is leaking, change the cartridge that should take care of it. And also, sometimes it can be caused by plumber's grease inside the shower valve.

New house. Call builder so that he can get a plumber out.

if you had more of the sport of 'curling' in AZ you might have a better understanding of friction loss.
more friction and the 'stone' slows down. more friction loss and the 'stone' speeds up.

I think we are debating the difference between:


friction loss

and

loss of friction



I will take 6, you will take 1/2 dozen

then

we can compare quantities

actually,

if you took 1/2 of a baker's dozen ..............................................



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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

quote; more friction loss

Sounds like a double negative to describe "less" friction. Sort of like the ads that advertise that you will "use 400% LESS", instead of "1/4 as much".