UK HQed Pentair 4Q 2017 Revenues Up 6%, Operating Income Down 15%, Pretax Income Down 1% and Net Income Up 85%, With the Latter Due to a 4Q 2017 Income Tax Expense Reduction of $85 Mil Resulting From the Trump Tax Bill Comprised of Tax Debt Forgiveness of $148 Mil Less the Tax Cost of Foreign Earnings Repatriation of $63 Mil