1. Name and Address of Reporting Person
Cadogan, William J.
1500 County Road B2 West
Suite 400
St. Paul, MN 55113-3105
USA
2. Issuer Name and Ticker or Trading Symbol
Pentair, Inc. (PNR)
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Day/Year
04/30/2003
5. If Amendment, Date of Original (Month/Day/Year)
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
(X) Director ( ) 10% Owner
( ) Officer (give title below) ( ) Other (specify below)
7. Individual or Joint/Group Filing (Check Applicable Line)
(X) Form filed by One Reporting Person
( ) Form filed by More than One Reporting Person
TABLE I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
+------------------------------+----------+----------+---------+--------------------------+--------------+-----------+------------+
|1. Title of Security |2. Trans- |2A.Execu- |3. Trans-|4. Securities Acquired (A)|5. Amount of |6. Owner- |7. Nature |
| | action | action | action| or Disposed of (D) |Securities | ship | of In- |
| | Date | Date | Code | |Beneficially | Form: | direct |
| | | | | |Owned | Direct | Bene- |
| | (Month/ | (Month/ | | |Following | (D) or | ficial |
| | Day/ | Day/ +-----+---+-----------+---+----------+Reported | Indirect| Owner- |
| | Year) | Year) |Code |V |Amount |A/D|Price |Transaction(s)| (I) | ship |
+------------------------------+----------+----------+-----+---+-----------+---+----------+--------------+-----------+------------+
Common Stock 04/30/2003 JF1 5214.607 A $0.0000 D
Common Stock 04/30/2003 JF2 V -0.607 D $38.3700 5214 D
Common Stock 4700 I By Trust
Common Stock 04/30/2003 M 5214.607 A $0.0000 I By Plan Agent
Common Stock 04/30/2003 JF1 -5214.607 D $0.0000 0 I By Plan Agent
TABLE II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned
+----------+--------+-------+-------+---------+-----------+---------------------+----------------+----------+-------+-------+------+
|1. |2. |3. |3A. |4. |5. |6. |7. |8. |9. |10. |11. |
| | | | | | | | | |Number |Owner- | |
| | | | | | | | | |of |ship | |
| | | | | | | | | |Deriv- |Form of| |
| | | | | | | |Title and Amount| |ative |Deriv- | |
| | | | | | | |of Underlying | |Secur- |ative |Nature|
| |Conver- |Trans- |Execu- | |Number of | |Securities | |ities |Secur- |of |
| |sion or |action |tion | |Derivative |Date Exercisable +-------+--------+ |Benefi-|ity: |In- |
| |Exercise|Date |Date | |Securities |and Expiration Date | |Amount | |cially |Direct |direct|
| |Price of| | |Transac- |Acquired(A)|(Month/Day/Year) | |or | |Owned |(D) or |Bene- |
|Title of |Deriv- |(Month/|(Month/|tion Code|Disposed(D)+----------+----------+ |Number |Price of | |In- |ficial|
|Derivative|ative | Day/ | Day/ +------+--+-----+-----+Date Exer-|Expira- | |of |Derivative| |direct |Owner-|
|Security |Security|Year) |Year) |Code |V |(A) |(D) |cisable |tion Date |Title |Shares |Security | |(I) |ship |
+----------+--------+-------+-------+------+--+-----+-----+----------+----------+-------+--------+----------+-------+-------+------+
Nonqualifie $22.75 04/30/2008 Common 1950F3 D
d Stock Stock
Option
(right to
buy)
Nonqualifie $35.45 04/30/2008 Common 5000F3 D
d Stock Stock
Option
(right to
buy)
Nonqualifie $36.1875 04/30/2008 Common 1300F3 D
d Stock Stock
Option
(right to
buy)
Nonqualifie $36.2969 04/30/2008 Common 1150F3 D
d Stock Stock
Option
(right to
buy)
Nonqualifie $39.0781 04/30/2008 Common 8850F3 D
d Stock Stock
Option
(right to
buy)
Nonqualifie $39.625 04/30/2008 Common 1275F3 D
d Stock Stock
Option
(right to
buy)
Nonqualifie $40.4375 02/25/2008 Common 1275 D
d Stock Stock
Option
(right to
buy)
Phantom 1 04/30/2 MF4 5214. Common 5214.607 $0.0000 3
51.227 I By Plan
Stock Units 003 607 Stock Agent
- Deferred
Compensatio
n
Phantom 1 Common 7737.70 I By Plan
Stock Units Stock 3 Agent
- Equity
Compensatio
n
Explanation of Responses:
Upon exercise of phantom stock units, underlying securities held directly by
reporting person.
Automatic cash-out of fractional share interests from a dividend reinvestment
plan.
Upon retirement of reporting person, options were extended to five years beyond
the date of retirement, but not to exceed their original expiration date.
Phantom stock units became exercisable on April 30, 2003, in accordance with
reporting person's irrevocable election.
SIGNATURE OF REPORTING PERSON
/s/ Louis L. Ainsworth, Attorney-in-Fact
_______________________________
William J. Cadogan
DATE
05/01/2003