We consent to the incorporation by reference in Registration Statement Nos. 33-38534, 33-45012,
333-12561,
333-62475,
333-75166,
333-115429,
333-115430,
333-115432, and
333-126693 of Pentair,
Inc. of our reports dated
February 26, 2007, with respect to the consolidated financial statements
and financial statement schedule of Pentair, Inc. and
subsidiaries (which report expressed an
unqualified opinion and included an explanatory paragraph relating to
the Company’s changes in its
method of accounting for defined benefit pension and postretirement benefit plans in 2006 and
stock-based compensation in 2005), and management’s report on the effectiveness of internal control
over financial reporting, appearing in this Annual Report on Form 10-K for the year ended
December 31, 2006.