Mensaje del debate low water pressure on hot water pipe

Path: g2news1.google.com!news2.google.com!news1.google.com!news.maxwell.syr.edu!oshean-news.uri.edu!newsserver.uri.edu!not-for-mail
From: Goedjn <pr...@mail.uri.edu>
Newsgroups: alt.home.repair
Subject: Re: low water pressure on hot water pipe
Date: Wed, 15 Mar 2006 16:59:32 -0500
Organization: University of Rhode Island
Lines: 29
Message-ID: <2a3h129r61ujsgud303gpkms10s6ai43th@4ax.com>
References: <mmodrall-95DB5D.16305215032006@news.verizon.net>
NNTP-Posting-Host: 131.128.197.68
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Trace: clamcake.uri.edu 1142460088 27859 131.128.197.68 (15 Mar 2006 22:01:28 GMT)
X-Complaints-To: news@oshean-news.uri.edu
NNTP-Posting-Date: Wed, 15 Mar 2006 22:01:28 +0000 (UTC)
X-Newsreader: Forte Free Agent 2.0/32.652

On Wed, 15 Mar 2006 21:30:51 GMT, Mark Modrall <mmodr...@verizon.cod>
wrote:

>Hi...
>
>   Our house has a well with pretty hard water in it; we find stuff 
>precipitating over time in the toilets, etc.  We've got one pipe that's 
>a particular problem - the hot water pipe to the shower in the 
>downstairs bathroom.  We don't use that shower often, but both the water 
>pressure and the temperature of the water coming out seem to be falling 
>off steeply over the last 5 or 6 months.
>
>   The pressure and temperature of the hot water in the sink in the same 
>bathroom isn't anywhere near as bad.
>
>   Is there an easy way to tell if this is caused by mineral deposits, 
>and if so where in the pipe?  It's getting to the point where we 
>couldn't expect any guests to use that bathroom anymore.

My favorite suspect is the anti-scald valve getting munged up
with crud. 

Shut off the water to that branch, dip the shower-head
in a gallon of cheap vinigar, and then open the waste-cock
on that hot-water shutoff, to suck the vinegar backwards
through the valve.  Let it sit overnight, and then blow it
clear and see if that helps.