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[Shop-talk] faucets, mixing valves, and regular valves

Subject: [Shop-talk] faucets, mixing valves, and regular valves
From: TR3driver at ca.rr.com (Randall)
Date: Fri, 1 Jul 2011 08:09:04 -0700
References: <Pine.LNX.4.64.1106301836190.27285@thunder.banklogic.net><4E0D1E8E.7080204@hornesystemstx.com> <Pine.LNX.4.64.1107010943290.11410@thunder.banklogic.net>
> I've been having trouble finding a mixing valve (other than a regular 
> faucet)... Got a link?

I'm not sure exactly which kind Pat had in mind, but it shouldn't be hard to
find almost any kind of mixing valve you want:
http://tinyurl.com/3tx4b9p

But a thermostatic mixing valve seems like serious over-kill to me, for a
simple hose connection.  I'd go for something more like this:
http://www.visplumbing.com/Catalog_i12758592.html?catId=376941

And as others have observed, you could just use that style for the tub and
connect a hose when needed, if you want.

> is that I'm not sure what happens if I have both valves 
> partially open and 
> the hose handle off so that there's no flow out the end.  Will I get 
> hot/cold water mixing in the lines?  And is that a problem?

It's possible you could get some mixing if, for example, someone else was
using all of the hot water pressure.  But most likely it would be very
little and probably only cold water into the hot side.  Doesn't seem like a
big problem to me.

Ball valves also aren't going to give you fine control of the outlet
temperature & volume, IMO.  I'd stick with one of the "faucet" designs,
either the classic globe valve or one of the newer "washerless" designs.
Gate valves have a tendency to weep a bit when shut off.

-- Randall  

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