PENTAIR plc — Director's Dealing 2005

Apr 18, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2005-04-18

Reporting Person: CATHCART RICHARD J (Vice Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-04-18	Common Stock	S	1000	$37.34	Disposed	137566	Direct
2005-04-18	Common Stock	S	400	$37.37	Disposed	137166	Direct
2005-04-18	Common Stock	S	200	$37.36	Disposed	136966	Direct
2005-04-18	Common Stock	S	400	$37.19	Disposed	136566	Direct
2005-04-18	Common Stock	S	800	$37.82	Disposed	135766	Direct
2005-04-18	Common Stock	S	2200	$37.71	Disposed	133566	Direct
2005-04-18	Common Stock	S	2000	$37.7	Disposed	131566	Direct
2005-04-18	Common Stock	S	1000	$37.67	Disposed	130566	Direct
2005-04-18	Common Stock	S	2000	$37.78	Disposed	128566	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1526.683	Indirect

Footnotes

F1: The reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2005.