 SPX Flow Inc. FLOW, 0.82 , a provider of process software for the nutrition, health and industrial markets, said Monday it has agreed to be acquired by Lone Star Funds in an all-cash deal valued at about 3.8 billion. The price is equal to a premium of about 40 over SPX Flows closing price on July 16, the last trading day before a Wall Street Journal report that the company had received an unsolicited bid. 