Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
HAGGERTY CHARLES A
  2. Issuer Name and Ticker or Trading Symbol
PENTAIR INC [PNR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
5500 WAYZATA BLVD., SUITE 800
3. Date of Earliest Transaction (Month/Day/Year)
10/28/2004
(Street)

GOLDEN VALLEY, MN 55416-1259
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 10/28/2004   M   2,550 A $ 20.2188 20,550 D  
Common Stock 10/28/2004   M   2,550 A $ 19.8125 23,100 D  
Common Stock 10/28/2004   M   2,600 A $ 18.0938 25,700 D  
Common Stock 10/28/2004   M   3,900 A $ 11.375 29,600 D  
Common Stock 10/28/2004   M   1,533 A $ 18.1485 31,133 D  
Common Stock 10/28/2004   M   11,798 A $ 19.5391 42,931 D  
Common Stock 10/28/2004   M   3,333 A $ 17.725 46,264 D  
Common Stock 10/28/2004   F   13,738 D $ 37.18 32,526 D  
Common Stock 10/28/2004   G V 14,526 D $ 0 18,000 D  
Common Stock 10/28/2004   G V 14,526 A $ 0 34,926 I By Trust

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Nonqualified Stock Option (right to buy) $ 11.375 10/28/2004   M     3,900 01/02/2002 01/02/2011 Common Stock 3,900 $ 0 0 (1) D  
Nonqualified Stock Option (right to buy) $ 17.725 10/28/2004   M     3,333 02/25/2004 02/25/2013 Common Stock 3,333 $ 0 6,667 (1) D  
Nonqualified Stock Option (right to buy) $ 18.0938 10/28/2004   M     2,600 01/03/2001 01/03/2010 Common Stock 2,600 $ 0 0 (1) D  
Nonqualified Stock Option (right to buy) $ 18.1485 10/28/2004   M     1,533 01/02/2003 01/02/2012 Common Stock 1,533 $ 0 767 (1) D  
Nonqualified Stock Option (right to buy) $ 19.5391 10/28/2004   M     11,798 02/27/2003 02/27/2012 Common Stock 11,798 $ 0 5,902 (1) D  
Nonqualified Stock Option (right to buy) $ 19.8125 10/28/2004   M     2,550 01/14/2000 01/14/2009 Common Stock 2,550 $ 0 0 (1) D  
Nonqualified Stock Option (right to buy) $ 20.2188 10/28/2004   M     2,550 02/25/1999 02/25/2008 Common Stock 2,550 $ 0 0 (1) D  
Nonqualified Stock Option (right to buy) $ 37.18 10/28/2004   A(2)   1,265   10/28/2004(3) 01/03/2010(3) Common Stock 1,265 $ 0 1,265 D  
Nonqualified Stock Option (right to buy) $ 37.18 10/28/2004   A(2)   1,193   10/28/2004(3) 01/02/2011(3) Common Stock 1,193 $ 0 1,193 D  
Nonqualified Stock Option (right to buy) $ 37.18 10/28/2004   A(2)   748   10/28/2004(3) 01/02/2012(3) Common Stock 748 $ 0 748 D  
Nonqualified Stock Option (right to buy) $ 37.18 10/28/2004   A(2)   6,200   10/28/2004(3) 02/27/2012(3) Common Stock 6,200 $ 0 6,200 D  
Nonqualified Stock Option (right to buy) $ 37.18 10/28/2004   A(2)   1,588   10/28/2004(3) 02/25/2013(3) Common Stock 1,588 $ 0 1,588 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HAGGERTY CHARLES A
5500 WAYZATA BLVD.
SUITE 800
GOLDEN VALLEY, MN 55416-1259
  X      

Signatures

 David D. Harrison, Attorney-In-Fact   11/01/2004
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) On May 17, 2004, Pentair declared a 2-for-1 stock split in the form of a 100 percent stock dividend payable on June 8, 2004, to shareholders of record as of June 1, 2004. This previously reported stock option and exercise price have been adjusted to reflect the stock split.
(2) Non-qualified reload stock option granted under the Pentair, Inc. Outside Directors Non-Qualified Stock Option Plan.
(3) Reload stock option becomes exercisable upon grant and expires on the same date as the original option grant.

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