WASHINGTON, Oct. 29 -- Law firms assisted companies in the following recently announced transactions: * * * Debevoise & Plimpton LLP... ...advising Acorn Investment Partners, a portfolio company of Oaktree Capital Management, in its acquisition of BW/IP - New Mexico, a wholly owned subsidiary of Flowserve Corporation that holds asbestos liabilities and related insurance assets. The advisory aims to structure and complete the acquisition efficiently while mitigating liability exposure and alig more ST