On Mon, 26 Nov 2001, Met History wrote:

> November 26, 2001
>
> Hart Plumbing
> POB 2134
> Oak Bluffs, MA  02143
>
> Dear Mr. Hart:
>
> Thank you again for your help this summer, especially with resolving the
> problem with the hot water back flow into the cold water taps.
>
> I originally wondered to your plumber Josh if the problem wasn't with a small
> miximing crossover valve (installed about 10 years ago) which was designed to
> let a small amount of hot water into the toilet tank, to reduce sweating.  I
> never climbed up to actually examine the mixing valve - it's in an
> inconvenient place.
>
> Josh said that, yes, the mixing valve was broken, and put in a new one.  He
> said there was a diaphragm that, in brazing the joint, might have been
> damaged, right from the start.  (I enclose the mixing valve he cut out.)
>
> I was curious about how a mixing valve actually works, and I sawed it in
> half.  Correct me if I am wrong, but (as I examine it) it appears to me to
> have a simple set-screw regulating a bleed of hot water - not a diaphragm or
> any other complicated device.
>
> It occurs to me that, actually, this mixing valve is actually in perfectly
> good shape, and did not really need replacement - we only needed to adjust
> the setscrew to reduce the flow of hot water.
>
> Does that possibility occur to you, too?
>
> Best,

Did you receive any reply to this?

                                  Larry

---
Lawrence Kestenbaum, [log in to unmask]
Washtenaw County Commissioner, 4th District
The Political Graveyard, http://politicalgraveyard.com
Mailing address: P.O. Box 2563, Ann Arbor MI 48106