PENTAIR plc — Director's Dealing 2005

May 2, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2005-05-02

Reporting Person: SCHROCK MICHAEL V (President, COO Enclosures)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-05-02	Common Stock	S	10000	$40	Disposed	190927.191	Direct

Footnotes

F1: The reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 15, 2005.