PENTAIR plc — Director's Dealing 2006

May 3, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2006-05-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-05-01	Common Stock	S	100	$37.87	Disposed	169933.717	Direct
2006-05-01	Common Stock	S	300	$37.88	Disposed	169633.717	Direct
2006-05-01	Common Stock	S	300	$37.9	Disposed	169333.717	Direct
2006-05-01	Common Stock	S	600	$37.91	Disposed	168733.717	Direct
2006-05-01	Common Stock	S	1000	$37.97	Disposed	167733.717	Direct
2006-05-01	Common Stock	S	1000	$37.99	Disposed	166733.717	Direct
2006-05-01	Common Stock	S	6700	$38	Disposed	160033.717	Direct
2006-05-01	Common Stock	S	1500	$38.01	Disposed	158533.717	Direct
2006-05-01	Common Stock	S	400	$38.02	Disposed	158133.717	Direct
2006-05-01	Common Stock	S	1100	$38.03	Disposed	157033.717	Direct
2006-05-01	Common Stock	S	1500	$38.04	Disposed	155533.717	Direct
2006-05-01	Common Stock	S	1500	$38.05	Disposed	154033.717	Direct
2006-05-01	Common Stock	S	500	$38.06	Disposed	153533.717	Direct
2006-05-01	Common Stock	S	500	$38.07	Disposed	153033.717	Direct
2006-05-01	Common Stock	S	3000	$38.15	Disposed	150033.717	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - ESPP	188.353	Direct
Common Stock - ESOP	788.9696	Indirect
Common Stock	203.964	Indirect