<HTML>
<HEAD>
<TITLE>sv8</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="right" style="font-size: 10pt; margin-top: 12pt">File No.&nbsp;333-<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt; margin-bottom: 3pt">As filed with the Securities and Exchange Commission on July&nbsp;29, 2010</DIV>

<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>

<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="FONT-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER THE SECURITIES ACT OF 1933</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="FONT-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>PENTAIR, INC.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of Registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="48%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
<TR></TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>Minnesota</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>41-0907434</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction of incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer Identification Number)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>5500 Wayzata Boulevard, Suite&nbsp;800</B></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>Golden Valley, Minnesota</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>55416</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(Address of principal executive offices)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(Zip Code)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>PENTAIR, INC. 2008 OMNIBUS STOCK INCENTIVE PLAN, AS AMENDED AND RESTATED</B><BR>
(Full title of the plan)</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<TR></TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>Angela D. Lageson</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>Copy to:</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>Senior Vice President, General Counsel and Secretary</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>Benjamin F. Garmer, III</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>Pentair, Inc.</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>John K. Wilson</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>5500 Wayzata Boulevard, Suite&nbsp;800</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>Foley &#038; Lardner LLP</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>Golden Valley, Minnesota 55416</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>777 East Wisconsin Avenue</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>(763)&nbsp;545-1730</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>Milwaukee, Wisconsin 53202</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(Name, address and telephone number of agent for service)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>(414)&nbsp;271-2400</B></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="FONT-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of &#147;large accelerated
filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule&nbsp;12b-2 of the Exchange Act.
(Check One):
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="22%"></TD>
    <TD width="3%"></TD>
    <TD width="22%"></TD>
    <TD width="3%"></TD>
    <TD width="22%"></TD>
    <TD width="3%"></TD>
    <TD width="22%"></TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD NOWRAP align="left" valign="top">Large accelerated filer <FONT style="font-family: Wingdings">&#254;</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP align="center" valign="top">Accelerated filer <FONT style="font-family: Wingdings">&#111;</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP align="center" valign="top">Non-accelerated filer <FONT style="font-family: Wingdings">&#111;</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP align="right" valign="top">Smaller reporting company <FONT style="font-family: Wingdings">&#111;</FONT></TD>
</TR>
<TR valign="bottom">
    <TD align="left" valign="top">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP align="center" valign="top">(Do not check if a smaller reporting company)</TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="FONT-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>CALCULATION OF REGISTRATION FEE</B></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="38%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="8%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">Title of Securities</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Amount</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Proposed Maximum</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Proposed Maximum</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Amount of</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">to be Registered</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">to be Registered</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Offering Price Per Share</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Aggregate Offering Price</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Registration Fee</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD align="center" style="border-top: 2px solid #000000"><DIV style="margin-left:30px; text-indent:-15px">Common Stock, par value
$0.16 2/3 per share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD colspan="3" align="center" style="border-top: 2px solid #000000" nowrap>4,000,000 shares (1)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">33.92 </TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">135,680,000 </TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">9,673.98</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Preferred Share Purchase Rights</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD colspan="3" align="center" style="border-top: 2px solid #000000">4,000,000 rights</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">(3</TD>
    <TD nowrap style="border-top: 2px solid #000000">)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">(3</TD>
    <TD nowrap style="border-top: 2px solid #000000">)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">(3</TD>
    <TD nowrap style="border-top: 2px solid #000000">)</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>



<DIV style="margin-top: 3pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Amount to be registered consists of an aggregate of 4,000,000 shares of the Pentair, Inc.
common stock to be issued pursuant to the grant to or exercise of awards by participants under
the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated (the &#147;Plan&#148;).
Pursuant to Rule&nbsp;416 under the Securities Act of 1933, this registration statement also covers
an indeterminate number of additional shares of common stock (and Preferred Share Purchase
Rights) that may become issuable in accordance with the adjustment and anti-dilution
provisions of the Plan.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Determined in accordance with Rules 457(c) and 457(h), the registration fee calculation is
based on the average of the high and low prices of the Pentair, Inc. common stock as reported
on the New York Stock Exchange on July&nbsp;23, 2010.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>The value attributable to the Preferred Share Purchase Rights is reflected in the market
price of the Pentair, Inc. common stock to which the Rights are attached.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Pursuant to Rule&nbsp;429 under the Securities Act of 1933, as amended, the Prospectus referred to
herein also relates to the Registrant&#146;s Registration Statement on Form S-8 (Registration No.
333-152458).
</DIV>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>











<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">










<!--TOC-->
<!--/TOC-->





<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>STATEMENT PURSUANT TO GENERAL INSTRUCTION E TO FORM S-8</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The purpose of this Registration Statement is to register 4,000,000 additional shares of
Common Stock, par value $0.16 2/3 per share, and associated Preferred Share Purchase Rights, of
Pentair, Inc. (the &#147;Company&#148;) in connection with the Pentair, Inc. 2008 Omnibus Stock Incentive
Plan, as amended and restated.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to General Instruction E of Form S-8, the contents of the Company&#146;s Registration
Statement on Form S-8 (Registration No.&nbsp;333-152458), including the documents incorporated by
reference therein, are incorporated by reference into this Registration Statement, except as set
forth below.
</DIV>
<!-- link1 "PART II INFORMATION REQUIRED IN REGISTRATION STATEMENT" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>PART II INFORMATION REQUIRED IN REGISTRATION STATEMENT</B>
</DIV>

<!-- link2 "Item&nbsp;8. Exhibits" -->

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>Item&nbsp;8. Exhibits</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See the Exhibit&nbsp;Index, which is incorporated herein by reference.
</DIV>
<!-- link2 "Item&nbsp;9. Undertakings" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Company hereby undertakes:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;To file, during any period in which offers or sales are being made, a post-effective
amendment to this registration statement:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;To include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act of 1933;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;To reflect in the prospectus any facts or events arising after the effective date of the
registration statement (or the most recent post-effective amendment thereof) which, individually or
in the aggregate, represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in volume of securities
offered (if the total dollar value of securities offered would not exceed that which was
registered) and any deviation from the low or high end of the estimated maximum offering range may
be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant
to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20
percent change in the maximum aggregate offering price set forth in the &#147;Calculation of
Registration Fee&#148; table in the effective registration statement; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such information in
the registration statement;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><I>provided, however</I>, that paragraphs (a)(1)(i) and (a)(1)(ii) of this section do not apply if the
registration statement is on Form S-8, and the information required to be included in a
post-effective amendment by those paragraphs is contained in reports filed with or furnished to the
Commission by the Company pursuant to Section&nbsp;13 or Section 15(d) of the Securities Exchange Act of
1934 that are incorporated by reference in this registration statement; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial <I>bona fide </I>offering thereof.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4)&nbsp;That, for the purpose of determining liability of the registrant under the Securities
Act of 1933 to any purchaser in the initial distribution of the securities, in a primary offering
of securities of the Company pursuant to this registration statement, regardless of the
underwriting method used to sell the securities to the purchaser, if the securities are offered or
sold to such purchaser by means of any of the following communications, the Company will be a
seller to the purchaser and will be considered to offer or sell such securities to such purchaser:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;Any preliminary prospectus or prospectus of the Company relating to the offering
required to be filed pursuant to Rule&nbsp;424 under the Securities Act of 1933;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;Any free writing prospectus relating to the offering prepared by or on behalf of the
Company or used or referred to by the Company;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;The portion of any other free writing prospectus relating to the offering containing
material information about the Company or its securities provided by or on behalf of the Company;
and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv)&nbsp;Any other communication that is an offer in the offering made by the Company to the
purchaser.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned Company hereby undertakes that, for purposes of determining any liability
under the Securities Act of 1933, each filing of the Company&#146;s annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference in
the registration statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the Company pursuant to the foregoing
provisions, or otherwise, the Company has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act of 1933 and is,
therefore, unenforceable. In the event that a claim for indemnification against such liabilities
(other than the payment by the Company of expenses incurred or paid by a director, officer or
controlling person of the Company in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with the securities being
registered, the Company will, unless in the opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities Act of 1933 and will
be governed by the final adjudication of such issue.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->2<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "SIGNATURES" -->

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Golden Valley, State of Minnesota, on July&nbsp;29, 2010.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>PENTAIR, INC.</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ John L. Stauch
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">John L. Stauch&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP colspan="2" align="left">Executive Vice President and Chief Financial Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities listed below on July&nbsp;29, 2010:
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="30%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
    <TD width="55%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left">SIGNATURE</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">TITLE</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Randall J. Hogan
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Randall J. Hogan
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman and Chief Executive Officer<br>
(Principal Executive Officer)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John L. Stauch
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John L. Stauch
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Executive Vice President and Chief Financial Officer<br>
(Principal Financial Officer)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Mark C. Borin
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Controller and Chief Accounting Officer</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Mark C. Borin</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">(Principal Accounting Officer)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Leslie Abi-Karam
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Glynis A. Bryan
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Jerry W. Burris
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
T. Michael Glenn
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Charles A. Haggerty
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
David H. Y. Ho
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->3<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="40%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="55%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left">SIGNATURE</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">TITLE</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
David A. Jones
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Ronald L. Merriman
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV ALIGN="left" style="margin-left:90px; text-indent:-0px">*</DIV>
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
William T. Monahan
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%"></TD>
    <TD width="1%"></TD>
    <TD width="35%"></TD>
    <TD width="1%"></TD>
    <TD width="62%"></TD>
</TR>
<TR></TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">*By
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">/s/ John L. Stauch</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John L. Stauch
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Attorney-in-fact</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->4<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "EXHIBIT INDEX" -->

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXHIBIT INDEX<BR>
TO<BR>
REGISTRATION STATEMENT ON FORM S-8</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="93%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Exhibit Number</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Description</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Third Restated Articles of Incorporation as amended through
May&nbsp;3, 2007 (Incorporated by reference to Exhibit&nbsp;3.1
contained in the Company&#146;s Quarterly Report on Form&nbsp;10-Q
for the quarterly period ended March&nbsp;31, 2007).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fourth Amended and Superseding By-Laws as amended through
May&nbsp;3, 2007 (Incorporated by reference to Exhibit&nbsp;3.2
contained in the Company&#146;s Quarterly Report on Form&nbsp;10-Q
for the quarterly period ended March&nbsp;31, 2007).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Rights Agreement dated as of December&nbsp;10, 2004 between
Pentair, Inc. and Wells Fargo Bank, N.A. (Incorporated by
reference to Exhibit&nbsp;4.1 contained in the Company&#146;s
Registration Statement on Form&nbsp;8-A, dated as of December
31, 2004).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.4
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended
and restated (incorporated by reference to Appendix&nbsp;A
contained in the Company&#146;s Proxy Statement for its 2010
Annual Meeting of Shareholders).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.5
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Form of award letter for executive officers under the
Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended
(incorporated by reference to Exhibit&nbsp;10.1 contained in the
Company&#146;s Current Report on Form&nbsp;8-K filed January&nbsp;8,
2009).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.6
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Form of award letter for directors under the Pentair, Inc.
2008 Omnibus Stock Incentive Plan, as amended (incorporated
by reference to Exhibit&nbsp;10.21 to the Company&#146;s Annual
Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2009).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">5
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Foley &#038; Lardner LLP.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">15
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Letter of Deloitte &#038; Touche LLP regarding Unaudited Interim
Financial Information.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Foley &#038; Lardner LLP (included in Exhibit&nbsp;5).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Deloitte &#038; Touche LLP.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">24
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Powers of Attorney.</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->5<!-- /Folio -->
</DIV>

</BODY>
</HTML>
[{"type": "S-8", "sequence": "1", "filename": "c59376sv8.htm", "description": "FORM S-8", "secsgml_size_bytes": 42977}]
{"company-data": {"conformed-name": "PENTAIR INC", "cik": "0000077360", "assigned-sic": "3550", "irs-number": "410907434", "state-of-incorporation": "MN", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-168377", "film-number": "10977077"}, "business-address": {"street1": "5500 WAYZATA BLVD.", "street2": "SUITE 800", "city": "GOLDEN VALLEY", "state": "MN", "zip": "55416", "phone": "763-545-1730"}, "mail-address": {"street1": "5500 WAYZATA BLVD.", "street2": "SUITE 800", "city": "GOLDEN VALLEY", "state": "MN", "zip": "55416"}, "former-company": {"former-conformed-name": "PENTAIR INDUSTRIES INC", "date-changed": "19790327"}}
sv8
File No. 333-
As filed with the Securities and Exchange Commission on July 29, 2010
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER THE SECURITIES ACT OF 1933
PENTAIR, INC.
(Exact name of Registrant as specified in its charter)
Minnesota
41-0907434
(State or other jurisdiction of incorporation or organization)
(I.R.S. Employer Identification Number)
5500 Wayzata Boulevard, Suite 800
Golden Valley, Minnesota
55416
(Address of principal executive offices)
(Zip Code)
PENTAIR, INC. 2008 OMNIBUS STOCK INCENTIVE PLAN, AS AMENDED AND RESTATED
(Full title of the plan)
Angela D. Lageson
Copy to:
Senior Vice President, General Counsel and Secretary
Benjamin F. Garmer, III
Pentair, Inc.
John K. Wilson
5500 Wayzata Boulevard, Suite 800
Foley & Lardner LLP
Golden Valley, Minnesota 55416
777 East Wisconsin Avenue
(763) 545-1730
Milwaukee, Wisconsin 53202
(Name, address and telephone number of agent for service)
(414) 271-2400
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated
filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.
(Check One):
Large accelerated filer
þ
Accelerated filer
o
Non-accelerated filer
o
Smaller reporting company
o
(Do not check if a smaller reporting company)
CALCULATION OF REGISTRATION FEE
Title of Securities
Amount
Proposed Maximum
Proposed Maximum
Amount of
to be Registered
to be Registered
Offering Price Per Share
Aggregate Offering Price
Registration Fee
Common Stock, par value
$0.16 2/3 per share
4,000,000 shares (1)
$
33.92
(2)
$
135,680,000
(2)
$
9,673.98
Preferred Share Purchase Rights
4,000,000 rights
(3
)
(3
)
(3
)
(1)
Amount to be registered consists of an aggregate of 4,000,000 shares of the Pentair, Inc.
common stock to be issued pursuant to the grant to or exercise of awards by participants under
the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated (the "Plan").
Pursuant to Rule 416 under the Securities Act of 1933, this registration statement also covers
an indeterminate number of additional shares of common stock (and Preferred Share Purchase
Rights) that may become issuable in accordance with the adjustment and anti-dilution
provisions of the Plan.
(2)
Determined in accordance with Rules 457(c) and 457(h), the registration fee calculation is
based on the average of the high and low prices of the Pentair, Inc. common stock as reported
on the New York Stock Exchange on July 23, 2010.
(3)
The value attributable to the Preferred Share Purchase Rights is reflected in the market
price of the Pentair, Inc. common stock to which the Rights are attached.
Pursuant to Rule 429 under the Securities Act of 1933, as amended, the Prospectus referred to
herein also relates to the Registrant's Registration Statement on Form S-8 (Registration No.
333-152458).
STATEMENT PURSUANT TO GENERAL INSTRUCTION E TO FORM S-8
The purpose of this Registration Statement is to register 4,000,000 additional shares of
Common Stock, par value $0.16 2/3 per share, and associated Preferred Share Purchase Rights, of
Pentair, Inc. (the "Company") in connection with the Pentair, Inc. 2008 Omnibus Stock Incentive
Plan, as amended and restated.
Pursuant to General Instruction E of Form S-8, the contents of the Company's Registration
Statement on Form S-8 (Registration No. 333-152458), including the documents incorporated by
reference therein, are incorporated by reference into this Registration Statement, except as set
forth below.
PART II INFORMATION REQUIRED IN REGISTRATION STATEMENT
Item 8. Exhibits
See the Exhibit Index, which is incorporated herein by reference.
Item 9. Undertakings
(a) The undersigned Company hereby undertakes:
(1) To file, during any period in which offers or sales are being made, a post-effective
amendment to this registration statement:
(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;
(ii) To reflect in the prospectus any facts or events arising after the effective date of the
registration statement (or the most recent post-effective amendment thereof) which, individually or
in the aggregate, represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in volume of securities
offered (if the total dollar value of securities offered would not exceed that which was
registered) and any deviation from the low or high end of the estimated maximum offering range may
be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant
to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20
percent change in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective registration statement; and
(iii) To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such information in
the registration statement;
provided, however
, that paragraphs (a)(1)(i) and (a)(1)(ii) of this section do not apply if the
registration statement is on Form S-8, and the information required to be included in a
post-effective amendment by those paragraphs is contained in reports filed with or furnished to the
Commission by the Company pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of
1934 that are incorporated by reference in this registration statement; and
(2) That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial
bona fide
offering thereof.
(3) To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
(4) That, for the purpose of determining liability of the registrant under the Securities
Act of 1933 to any purchaser in the initial distribution of the securities, in a primary offering
of securities of the Company pursuant to this registration statement, regardless of the
underwriting method used to sell the securities to the purchaser, if the securities are offered or
sold to such purchaser by means of any of the following communications, the Company will be a
seller to the purchaser and will be considered to offer or sell such securities to such purchaser:
(i) Any preliminary prospectus or prospectus of the Company relating to the offering
required to be filed pursuant to Rule 424 under the Securities Act of 1933;
(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the
Company or used or referred to by the Company;
(iii) The portion of any other free writing prospectus relating to the offering containing
material information about the Company or its securities provided by or on behalf of the Company;
and
(iv) Any other communication that is an offer in the offering made by the Company to the
purchaser.
(b) The undersigned Company hereby undertakes that, for purposes of determining any liability
under the Securities Act of 1933, each filing of the Company's annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference in
the registration statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
(c) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the Company pursuant to the foregoing
provisions, or otherwise, the Company has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act of 1933 and is,
therefore, unenforceable. In the event that a claim for indemnification against such liabilities
(other than the payment by the Company of expenses incurred or paid by a director, officer or
controlling person of the Company in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with the securities being
registered, the Company will, unless in the opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities Act of 1933 and will
be governed by the final adjudication of such issue.
2
SIGNATURES
Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Golden Valley, State of Minnesota, on July 29, 2010.
PENTAIR, INC.
By:
/s/ John L. Stauch
John L. Stauch
Executive Vice President and Chief Financial Officer
Pursuant to the requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities listed below on July 29, 2010:
SIGNATURE
TITLE
/s/ Randall J. Hogan
Randall J. Hogan
Chairman and Chief Executive Officer
(Principal Executive Officer)
/s/ John L. Stauch
John L. Stauch
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
/s/ Mark C. Borin
Corporate Controller and Chief Accounting Officer
Mark C. Borin
(Principal Accounting Officer)
*
Leslie Abi-Karam
Director
*
Glynis A. Bryan
Director
*
Jerry W. Burris
Director
*
T. Michael Glenn
Director
*
Charles A. Haggerty
Director
*
David H. Y. Ho
Director
3
SIGNATURE
TITLE
*
David A. Jones
Director
*
Ronald L. Merriman
Director
*
William T. Monahan
Director
*By
/s/ John L. Stauch
John L. Stauch
Attorney-in-fact
4
EXHIBIT INDEX
TO
REGISTRATION STATEMENT ON FORM S-8
Exhibit Number
Description
4.1
Third Restated Articles of Incorporation as amended through
May 3, 2007 (Incorporated by reference to Exhibit 3.1
contained in the Company's Quarterly Report on Form 10-Q
for the quarterly period ended March 31, 2007).
4.2
Fourth Amended and Superseding By-Laws as amended through
May 3, 2007 (Incorporated by reference to Exhibit 3.2
contained in the Company's Quarterly Report on Form 10-Q
for the quarterly period ended March 31, 2007).
4.3
Rights Agreement dated as of December 10, 2004 between
Pentair, Inc. and Wells Fargo Bank, N.A. (Incorporated by
reference to Exhibit 4.1 contained in the Company's
Registration Statement on Form 8-A, dated as of December
31, 2004).
4.4
Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended
and restated (incorporated by reference to Appendix A
contained in the Company's Proxy Statement for its 2010
Annual Meeting of Shareholders).
4.5
Form of award letter for executive officers under the
Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended
(incorporated by reference to Exhibit 10.1 contained in the
Company's Current Report on Form 8-K filed January 8,
2009).
4.6
Form of award letter for directors under the Pentair, Inc.
2008 Omnibus Stock Incentive Plan, as amended (incorporated
by reference to Exhibit 10.21 to the Company's Annual
Report on Form 10-K for the year ended December 31, 2009).
5
Opinion of Foley & Lardner LLP.
15
Letter of Deloitte & Touche LLP regarding Unaudited Interim
Financial Information.
23.1
Consent of Foley & Lardner LLP (included in Exhibit 5).
23.2
Consent of Deloitte & Touche LLP.
24
Powers of Attorney.
5