(August 6, 2019, 11:34 AM EDT) -- NEW YORK — A federal court properly excluded expert testimony in a suit over failed sewage treatment plant pumps for lack of a sound methodology and then correctly tossed a city authority’s product liability claims because expert testimony is needed for such a claim, the Second Circuit U.S. Court of Appeals decided July 30 (Norwalk Water Pollution Control Authority v. Flowserve US, Inc., No. 18-1288, 2nd Cir., 2019 U.S. App. LEXIS 22512)....