PENTAIR plc — Director's Dealing 2007

May 10, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2007-05-09

Reporting Person: CATHCART RICHARD J (Director, Vice Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-09	Common Stock	S	200	$34.03	Disposed	144297	Direct
2007-05-09	Common Stock	S	500	$34.04	Disposed	143797	Direct
2007-05-09	Common Stock	S	4800	$34.05	Disposed	138997	Direct
2007-05-09	Common Stock	S	7900	$34.06	Disposed	131097	Direct
2007-05-09	Common Stock	S	9893	$34.07	Disposed	121204	Direct
2007-05-09	Common Stock	S	800	$34.08	Disposed	120404	Direct
2007-05-09	Common Stock	S	300	$34.09	Disposed	120104	Direct
2007-05-09	Common Stock	S	8200	$34.1	Disposed	111904	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - ESPP	5970.212	Direct
Common Stock	1538.859	Indirect
Common Stock - ESOP	3975.7138	Indirect

Footnotes

F1: End-of-period holdings include monthly purchase(s), since the reporting person's last filed Form, under the Pentair, Inc. Employee Stock Purchase and Bonus Plan (ESPP) in exempt transaction(s) pursuant to Rule 16b-3(c).