Exhibit 99.2

Certification of CFO Pursuant To

18 U.S.C. Section 1350,

As Adopted Pursuant To

Section 906 Of The Sarbanes-Oxley Act Of 2002

In connection with the Quarterly Report of Pentair, Inc. (the “Company”) on Form 10-Q for the period ending September 28, 2002 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David D. Harrison, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to 906 of the Sarbanes-Oxley Act of 2002, that based on my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date:    November 12, 2002	/s/    DAVID D. HARRISON
	David D. Harrison Executive Vice President and Chief Financial Officer (Chief Accounting Officer)