PENTAIR plc — Director's Dealing 2004

Aug 3, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2004-08-02

Reporting Person: HARRISON DAVID D (Executive Vice President, CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-08-02	Common Stock	P	100	$31.1	Acquired	100	Indirect
2004-08-02	Common Stock	P	100	$31.04	Acquired	200	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	146096.717	Direct

Footnotes

F1: Since the reporting person's last report, end-of-period holdings include 2,522 shares previously held under the Pentair, Inc. Employee Stock Purchase and Bonus Plan, including the automatic cash-out of the fractional share interests pursuant to the terms of the Plan, and 172.717 shares acquired pursuant to a dividend reinvestment plan. 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. End-of-period holdings have been adjusted accordingly.

F2: The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.