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<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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt">As filed with the Securities and Exchange Commission on July&nbsp;22, 2008

</DIV>

<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt; margin-top:6pt">&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>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549<BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</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<BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</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%">
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<TR valign="bottom">
    <TD width="48%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
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<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" style="font-size:6pt">
<TD>&nbsp;</TD>
</TR>

<TR valign="bottom">
    <TD align="center" valign="top"><B>5500 Wayzata Boulevard, Suite&nbsp;800<BR>
Golden Valley, Minnesota</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="bottom"><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</B><BR>
(Full title of the plan)</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
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<TR valign="bottom">
    <TD align="center" valign="top"><B>Louis L. Ainsworth, Esq.</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, Secretary and General Counsel</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">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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 12b-2 of the Exchange Act. (Check one):</DIV>



<DIV align="center">
<TABLE cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 10pt">
<TR style="font-size: 0pt">
    <TD width="10%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<TR valign="top">
    <TD nowrap align="left" valign="top">Large accelerated filer <FONT face="Wingdings">&#254;</FONT>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" valign="top">Accelerated filer <FONT face="Wingdings">&#111;</FONT>&nbsp;</TD>
    <TD align="center">&nbsp;</TD>
    <TD nowrap align="center">Non-accelerated filer &nbsp; <FONT face="Wingdings">&#111;</FONT><BR>
(Do not check if a smaller reporting company)</TD>
    <TD align="center">&nbsp;</TD>
    <TD nowrap align="center" valign="top">Smaller reporting company <FONT face="Wingdings">&#111;</FONT>&nbsp;</TD>
</TR>
</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="26%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="19%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="15" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

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

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

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<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, $.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 align="center" valign="bottom" style="border-top: 2px solid #000000">7,500,000 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 align="center" valign="bottom" style="border-top: 2px solid #000000">$32.48 (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="center" valign="bottom" style="border-top: 2px solid #000000">$243,600,000 (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="center" valign="bottom" style="border-top: 2px solid #000000">$9,573.48</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 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 align="center" valign="bottom" style="border-top: 2px solid #000000">7,500,000 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 align="center" valign="bottom" style="border-top: 2px solid #000000">(3)</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="center" valign="bottom" style="border-top: 2px solid #000000">(3)</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="center" valign="bottom" style="border-top: 2px solid #000000">(3)</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="15" 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 7,500,000 shares of the Pentair,
Inc. common stock to be issued pursuant to the grant or exercise of awards to
participants under the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended (the
&#147;2008 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 2008 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;15, 2008.</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 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>

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

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








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






<!-- link1 "PART I INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>PART I INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The documents constituting Part&nbsp;I of this registration statement will be sent or given to
participants in the 2008 Plan as specified by Rule&nbsp;428(b)(1) under the Securities Act of 1933, as
amended (the &#147;Securities Act&#148;).
</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;3. Incorporation of Documents by Reference" -->

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>Item&nbsp;3. Incorporation of Documents by Reference</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents, filed by Pentair, Inc. (hereinafter referred to as the &#147;Company&#148; or
the &#147;Registrant&#148;) with the Securities and Exchange Commission (the &#147;Commission&#148;) pursuant to the
Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), are incorporated herein by
reference and deemed to be a part hereof:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The Company&#146;s Annual Report on Form 10-K for the year ended December&nbsp;31, 2007;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The Company&#146;s Quarterly Reports on Form 10-Q for the quarterly periods ended March&nbsp;29,
2008 and June&nbsp;28, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;The Company&#146;s Current Reports on Form 8-K dated January&nbsp;15, February&nbsp;26, April&nbsp;16, May&nbsp;1,
2008, June&nbsp;30, 2008, July&nbsp;8, 2008 and July&nbsp;17, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;The description of the Company&#146;s common stock contained in the Form 8-A dated January&nbsp;29,
1996, and any amendment or report updating such description; and
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;The description of the Company&#146;s preferred share purchase rights contained in the Form 8-A
dated December&nbsp;13, 2004, registering such preferred share purchase rights under the Exchange Act,
including any amendment or report updating such description.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All other documents subsequently filed by the Company pursuant to Section&nbsp;13(a), 13(c), 14 and
15(d) of the Exchange Act prior to the filing of a post-effective amendment to this Registration
Statement that indicates that all securities offered have been sold or that deregisters all
securities that remain unsold shall be deemed to be incorporated by reference in this Registration
Statement and to be a part hereof from the date of filing of such documents.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any statement contained in a document incorporated or deemed incorporated herein by reference
shall be deemed to be modified or superseded for the purpose of this Registration Statement to the
extent that a statement contained herein or in any subsequently filed document which also is, or is
deemed to be, incorporated herein by reference modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
</DIV>
<!-- link2 "Item&nbsp;4. Description of Securities" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Description of Securities.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;None.
</DIV>

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

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

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link2 "Item&nbsp;6. Indemnification of Directors and Officers" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Minnesota Statutes Section&nbsp;302A.521 provides that a Minnesota business corporation must
indemnify any director, officer, employee or agent of the corporation made or threatened to be made
a party to a proceeding, by reason of the former or present official capacity (as defined in the
statute) of the person, against judgments, penalties, fines, settlements and reasonable expenses
incurred by the person in connection with the proceeding if certain statutory standards are met.
&#147;Proceeding&#148; means a threatened, pending or completed civil, criminal, administrative, arbitration
or investigative proceeding, including one by or in the right of the corporation. Section&nbsp;302A.521
contains detailed terms regarding such right of indemnification and reference is made thereto for a
complete statement of such indemnification rights. The Company&#146;s Third Restated Articles of
Incorporation and Fourth Amended and Superseding By-laws also require the Company to provide
indemnification to the fullest extent of the Minnesota indemnification statute.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Company maintains directors&#146; and officers&#146; liability insurance, including a reimbursement
policy in favor of the Company.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar as indemnification for liabilities arising under the Securities Act may be permitted
to directors, officers or persons controlling the Company pursuant to the foregoing provisions or
otherwise, the Company has been informed that in the opinion of the Commission such indemnification
is against public policy as expressed in the Securities Act and is therefore unenforceable.
</DIV>
<!-- link2 "Item&nbsp;7. Exemption from Registration Claimed" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Exemption from Registration Claimed</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>
<!-- link2 "Item&nbsp;8. Exhibits" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><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;
</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 Commission pursuant to Rule 424(b) if, in the
aggregate, the changes in volume and price represent no more than a 20&nbsp;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>


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

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<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">&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 Exchange Act 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, 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 <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;(b)&nbsp;The undersigned Company hereby undertakes that, for purposes of determining any liability
under the Securities Act, each filing of the Company&#146;s annual report pursuant to Section 13(a) or
Section 15(d) of the Exchange Act 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 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 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 and will be governed by the final
adjudication of such issue.
</DIV>

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

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<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;22, 2008.
</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 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;22, 2008:
</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="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center">SIGNATURE</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">TITLE</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</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>
    <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 (Principal
Executive Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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 (Principal Financial Officer)</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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>
Mark C. Borin
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Controller and Chief Accounting
Officer (Principal Accounting Officer)</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Leslie Abi-Karam
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Glynis A. Bryan
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Jerry W. Burris
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
T. Michael Glenn
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Charles A. Haggerty
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</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>

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<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="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center">SIGNATURE</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">TITLE</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
David H. Y. Ho
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
David A. Jones
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Ronald L. Merriman
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&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>
    <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">*


</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;</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">
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
William T. Monahan
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>
<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom" style="font-size:0pt">
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="60%">&nbsp;</TD>
</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/ Louis L. Ainsworth
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Louis L. Ainsworth
</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 -->5<!-- /Folio -->
</DIV>

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<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="6%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="92%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" 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
(Incorporated herein by reference to Exhibit&nbsp;10.1 contained
in the Company&#146;s Current Report on Form&nbsp;8-K, dated as of
May&nbsp;1, 2008).</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 -->
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</DIV>



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[{"type": "S-8", "sequence": "1", "filename": "c33160sv8.htm", "description": "FORM S-8", "secsgml_size_bytes": 48256}]
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sv8
File No. 333-
As filed with the Securities and Exchange Commission on July 22, 2008
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
(Full title of the plan)
Louis L. Ainsworth, Esq.
Copy to:
Senior Vice President, Secretary and General Counsel
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
(Do not check if a smaller reporting company)
Smaller reporting company
o
CALCULATION OF REGISTRATION FEE
Proposed
Proposed
Maximum
Maximum
Title of Securities
Amount to
Offering Price
Aggregate
Amount of
to be Registered
be Registered
Per Share
Offering Price
Registration Fee
Common Stock, $.16
2/3 per share
7,500,000 shares (1)
$32.48 (2)
$243,600,000 (2)
$9,573.48
Preferred Share
Purchase Rights
7,500,000 rights
(3)
(3)
(3)
(1)
Amount to be registered consists of an aggregate of 7,500,000 shares of the Pentair,
Inc. common stock to be issued pursuant to the grant or exercise of awards to
participants under the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended (the
"2008 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 2008 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 15, 2008.
(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.
PART I INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The documents constituting Part I of this registration statement will be sent or given to
participants in the 2008 Plan as specified by Rule 428(b)(1) under the Securities Act of 1933, as
amended (the "Securities Act").
PART II INFORMATION REQUIRED IN REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference
The following documents, filed by Pentair, Inc. (hereinafter referred to as the "Company" or
the "Registrant") with the Securities and Exchange Commission (the "Commission") pursuant to the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), are incorporated herein by
reference and deemed to be a part hereof:
(a) The Company's Annual Report on Form 10-K for the year ended December 31, 2007;
(b) The Company's Quarterly Reports on Form 10-Q for the quarterly periods ended March 29,
2008 and June 28, 2008;
(c) The Company's Current Reports on Form 8-K dated January 15, February 26, April 16, May 1,
2008, June 30, 2008, July 8, 2008 and July 17, 2008;
(d) The description of the Company's common stock contained in the Form 8-A dated January 29,
1996, and any amendment or report updating such description; and
(e) The description of the Company's preferred share purchase rights contained in the Form 8-A
dated December 13, 2004, registering such preferred share purchase rights under the Exchange Act,
including any amendment or report updating such description.
All other documents subsequently filed by the Company pursuant to Section 13(a), 13(c), 14 and
15(d) of the Exchange Act prior to the filing of a post-effective amendment to this Registration
Statement that indicates that all securities offered have been sold or that deregisters all
securities that remain unsold shall be deemed to be incorporated by reference in this Registration
Statement and to be a part hereof from the date of filing of such documents.
Any statement contained in a document incorporated or deemed incorporated herein by reference
shall be deemed to be modified or superseded for the purpose of this Registration Statement to the
extent that a statement contained herein or in any subsequently filed document which also is, or is
deemed to be, incorporated herein by reference modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts and Counsel.
None.
Item 6. Indemnification of Directors and Officers
Minnesota Statutes Section 302A.521 provides that a Minnesota business corporation must
indemnify any director, officer, employee or agent of the corporation made or threatened to be made
a party to a proceeding, by reason of the former or present official capacity (as defined in the
statute) of the person, against judgments, penalties, fines, settlements and reasonable expenses
incurred by the person in connection with the proceeding if certain statutory standards are met.
"Proceeding" means a threatened, pending or completed civil, criminal, administrative, arbitration
or investigative proceeding, including one by or in the right of the corporation. Section 302A.521
contains detailed terms regarding such right of indemnification and reference is made thereto for a
complete statement of such indemnification rights. The Company's Third Restated Articles of
Incorporation and Fourth Amended and Superseding By-laws also require the Company to provide
indemnification to the fullest extent of the Minnesota indemnification statute.
The Company maintains directors' and officers' liability insurance, including a reimbursement
policy in favor of the Company.
Insofar as indemnification for liabilities arising under the Securities Act may be permitted
to directors, officers or persons controlling the Company pursuant to the foregoing provisions or
otherwise, the Company has been informed that in the opinion of the Commission such indemnification
is against public policy as expressed in the Securities Act and is therefore unenforceable.
Item 7. Exemption from Registration Claimed
Not applicable.
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;
(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 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
2
(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 Exchange Act that are
incorporated by reference in this registration statement; and
(2) That, for the purpose of determining any liability under the Securities Act, 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.
(b) The undersigned Company hereby undertakes that, for purposes of determining any liability
under the Securities Act, each filing of the Company's annual report pursuant to Section 13(a) or
Section 15(d) of the Exchange Act 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 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 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 and will be governed by the final
adjudication of such issue.
3
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 22, 2008.
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 22, 2008:
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
Mark C. Borin
Corporate Controller and Chief Accounting
Officer (Principal Accounting Officer)
*
Director
Leslie Abi-Karam
*
Director
Glynis A. Bryan
*
Director
Jerry W. Burris
*
Director
T. Michael Glenn
*
Director
Charles A. Haggerty
4
SIGNATURE
TITLE
*
Director
David H. Y. Ho
*
Director
David A. Jones
*
Director
Ronald L. Merriman
*
Director
William T. Monahan
*By
/s/ Louis L. Ainsworth
Louis L. Ainsworth
Attorney-in-fact
5
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
(Incorporated herein by reference to Exhibit 10.1 contained
in the Company's Current Report on Form 8-K, dated as of
May 1, 2008).
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.
6