<html xmlns:ns0="http://schemas.microsoft.com/sharepoint/soap/workflow/"
xmlns:ns1="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:ns2="http://schemas.microsoft.com/office/2004/12/omml"
xmlns:ns3="http://schemas.openxmlformats.org/package/2006/relationships"
xmlns:ns4="http://schemas.microsoft.com/exchange/services/2006/types"
xmlns:ns5="http://schemas.microsoft.com/exchange/services/2006/messages"
xmlns:ns6="urn:schemas-microsoft-com:"
xmlns:ns7="urn:schemas-microsoft-com:office:smarttags">
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered)">
<style>
<!--a:link
{mso-style-priority:99;}
span.MSOHYPERLINK
{mso-style-priority:99;}
a:visited
{mso-style-priority:99;}
span.MSOHYPERLINKFOLLOWED
{mso-style-priority:99;}
p
{mso-style-priority:99;}
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Garamond;
panose-1:2 2 4 4 3 3 1 1 8 3;}
@font-face
{font-family:"Arial Narrow";
panose-1:2 11 5 6 2 2 2 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
h1
{margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:0in;
text-align:justify;
page-break-after:avoid;
font-size:16.0pt;
font-family:Arial;
letter-spacing:-.25pt;
font-weight:bold;}
h3
{margin-top:6.0pt;
margin-right:0in;
margin-bottom:0in;
margin-left:0in;
margin-bottom:.0001pt;
text-align:justify;
page-break-after:avoid;
font-size:12.0pt;
font-family:Arial;
letter-spacing:-.5pt;
font-weight:normal;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
p
{margin-right:0in;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.alist, li.alist, div.alist
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
text-indent:-.15in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.ahead3, li.ahead3, div.ahead3
{margin-top:6.0pt;
margin-right:0in;
margin-bottom:0in;
margin-left:0in;
margin-bottom:.0001pt;
text-align:justify;
page-break-after:avoid;
font-size:12.0pt;
font-family:Arial;
letter-spacing:-.5pt;}
p.styleaparajustifiedafter0pt, li.styleaparajustifiedafter0pt, div.styleaparajustifiedafter0pt
{margin:0in;
margin-bottom:.0001pt;
text-align:justify;
font-size:12.0pt;
font-family:"Arial Narrow";}
p.alistnead, li.alistnead, div.alistnead
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:Arial;}
p.anumlist, li.anumlist, div.anumlist
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
p.ahead1, li.ahead1, div.ahead1
{margin-top:0in;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:0in;
text-align:center;
page-break-after:avoid;
font-size:16.0pt;
font-family:Arial;
letter-spacing:-.25pt;
font-weight:bold;}
p.styleheading3left0firstline0, li.styleheading3left0firstline0, div.styleheading3left0firstline0
{margin-top:6.0pt;
margin-right:0in;
margin-bottom:0in;
margin-left:0in;
margin-bottom:.0001pt;
text-align:justify;
page-break-after:avoid;
font-size:12.0pt;
font-family:Arial;
letter-spacing:-.5pt;}
p.a-text, li.a-text, div.a-text
{margin:0in;
margin-bottom:.0001pt;
text-align:justify;
font-size:12.0pt;
font-family:Garamond;
letter-spacing:-.25pt;}
p.apara, li.apara, div.apara
{margin:0in;
margin-bottom:.0001pt;
text-indent:.35in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.styleheading1centered, li.styleheading1centered, div.styleheading1centered
{margin-top:0in;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:.5in;
text-align:center;
page-break-after:avoid;
font-size:16.0pt;
font-family:Arial;
letter-spacing:-.25pt;
font-weight:bold;}
p.styleapara1timesnewromanfirstline025, li.styleapara1timesnewromanfirstline025, div.styleapara1timesnewromanfirstline025
{margin:0in;
margin-bottom:.0001pt;
text-align:justify;
text-indent:.25in;
font-size:12.0pt;
font-family:"Times New Roman";
letter-spacing:-.25pt;}
p.ppahead, li.ppahead, div.ppahead
{margin:0in;
margin-bottom:.0001pt;
font-size:16.0pt;
font-family:Arial;}
p.aparabullet, li.aparabullet, div.aparabullet
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
text-align:justify;
text-indent:-.25in;
font-size:12.0pt;
font-family:"Times New Roman";
letter-spacing:-.25pt;}
p.aabulllist1, li.aabulllist1, div.aabulllist1
{margin:0in;
margin-bottom:.0001pt;
text-align:justify;
font-size:12.0pt;
font-family:Garamond;
letter-spacing:-.25pt;}
p.aabulllist2, li.aabulllist2, div.aabulllist2
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:1.0in;
margin-bottom:.0001pt;
text-indent:-.25in;
font-size:12.0pt;
font-family:"Times New Roman";}
span.emailstyle33
{font-family:Calibri;
color:#1F497D;}
span.emailstyle34
{color:black;}
span.EmailStyle35
{font-family:Arial;
color:navy;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body bgcolor=white lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>All of the pressure reducers I have seen
work at no pressure – I think you are misreading the specification sheet –
the zero drop at zero flow is referring to pressure drop due to flow –
not due to the function of the regulator – its sort of like zero voltage
drop at zero amps…</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=Arial><span style='font-size:11.0pt;font-family:Arial;color:black'>The spec
sheet on the Wilkins model 500 does say “The assembly shall be of the
balanced piston design and shall reduce</span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=Arial><span style='font-size:11.0pt;font-family:Arial;color:black'>pressure
in both flow and no-flow conditions.” </span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=Arial><span style='font-size:11.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face=Arial><span style='font-size:11.0pt;font-family:Arial;color:black'>I don’t
think they would sell many if they didn’t reduce the pressure under
no-flow conditions. </span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'> </span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>Christopher</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>Christopher Freitas</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>Director of Research and Development
</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>OutBack Power Systems, Inc.</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'><a href="mailto:cfreitas@outbackpower.com"><font
color=black><span style='color:black'>cfreitas@outbackpower.com</span></font></a></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>Tel 360 435 6030</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>Cell 360 202 4239</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'><font color=black><span style='color:black'>19009 62<sup>nd</sup>
Ave NE</span></font><font color=black><span style='color:black'> </span></font></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'><font color=black><span style='color:black'>Arlington</span></font><font
color=black><span style='color:black'> </span></font><font color=black><span
style='color:black'>WA</span></font><font color=black><span style='color:black'>
</span></font><font color=black><span style='color:black'>98223</span></font><font
color=black><span style='color:black'> </span></font><font color=black><span
style='color:black'>USA</span></font></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'><a href="http://www.outbackpower.com/"><font
color=black><span style='color:black'>www.outbackpower.com</span></font></a></span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=2
color=black face="Times New Roman"><span style='font-size:11.0pt;color:black'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:11.0pt;font-family:Tahoma;color:black;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:11.0pt;font-family:Tahoma;
color:black'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Peter Parrish<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, December 07, 2008
3:22 PM<br>
<b><span style='font-weight:bold'>To:</span></b> 'RE-wrenches'<br>
<b><span style='font-weight:bold'>Subject:</span></b> [RE-wrenches] SDHW and
High Mains Pressure</span></font></p>
</div>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'>We are getting ready to install a SDHW
system for a customer and we looked at a number of things regarding his current
set up. I just posted a question about tankless heaters but I wanted this query
to be a separate one. The customer’s mains water pressure is 88 psi on a
Saturday afternoon and some time over the next 18 hours, the pressure went as
high as 96 psi. I understand that 80 psi is the high end of the safe range in
general and that 96 psi on a regular basis can/will damage valves and possibly
trigger T&P valves on water heaters.</span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'>At the recommendation of a plumber I know I
looked into pressure reducers, specifically the Wilkins/Zurn line. All the
Wilkins regulators produce zero pressure drop at zero flow. What good are these
products in protecting plumbing systems from high mains pressures at night when
pressures tend to be the highest and usage is at a minimum or even zero?</span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'>Are there products that will prevent
system pressures from exceeding a set point (e.g. 60 psi) under any flow
condition including zero? </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'>- Peter</span></font></p>
<div>
<p><font size=2 color=black face=Arial><span style='font-size:11.0pt;
font-family:Arial;color:black'>Peter T. Parrish, President<br>
California Solar Engineering, Inc.<br>
820 Cynthia Ave., Los Angeles, CA 90065<br>
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885<br>
CA Lic. 854779, NABCEP Cert. 031806-26<br>
peter.parrish@calsolareng.com </span></font></p>
</div>
</div>
</body>
</html>
<pre>MESSAGE CONFIDENTIALITY NOTICE:
This message (including attachments) is covered by the Electronic Communication Privacy Act, 18 U.S.C. sections 2510-2521, is confidential, and may also be protected by attorney-client or other privilege. If you believe that it has been sent to you in error, please do not read it. If you are not the intended recipient,you are hereby notified that any retention, dissemination, distribution, or copying of this communication is strictly prohibited. Please reply to the sender that you have received the message in error, then delete it. Thank you.