PENTAIR plc — Director's Dealing 2007

May 3, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PENTAIR INC (PNR)
CIK: 0000077360
Period of Report: 2007-05-02

Reporting Person: AINSWORTH LOUIS L (Sr. Vice President, Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-02	Common Stock	M	20000	$17.5	Acquired	137775.716	Direct
2007-05-02	Common Stock	F	12559	$32.83	Disposed	125216.716	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-05-02	Employee Stock Option (right to buy)	$17.5	M	20000	Disposed	2008-01-22	Common Stock (20000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3688.325	Indirect