3M Co., Maplewood, and Sewerin GmbH of Gutersloh, Germany, have expanded their strategic alliance, under which 3M will assume the exclusive distribution rights for the sale of Sewerin's entire water leak detection product portfolio in the United States.


Valspar Corp., Minneapolis, has elected to its board of directors William Cook, who is chairman, president and CEO of Donaldson Co. Inc., Bloomington. Cook has been appointed to serve on the board's compensation committee.