piffer is correct. ITT owns Goulds and Flygt.
FLOWSERVE is based on the old Dresser Group which included Worthington, Pleuger, Sier-Bath, Pacific, etc. Dresser then merged (or bought out), Duriron which I think already had purchased BJ some time prior to the merger. It also owns a slew of other miscellaneous pumps and miscellaneaous products (ex. Durametallic mechanical seals).
I sympathize with you BobPE, because none of these suppliers provide composite pump catalogs any more, so its hard to keep them in perspective. They will of course provide a CD with their product information, but I find I can locate info in the old catalogs in a quarter of the time that it takes to load a CD and locate the information that I want.
piffer is also right about Flygt. I believe they are still the #1 submersible waste water pump in North America. However, I agree with BobPE, it is not because of the technical strength of their product line. It is more because of their excellent service back-up. Municipal customers require a significant comfort zone regarding maintenance back-up. If a Flygt pump fails, the service rep is available as required 7/24. Because of their experience with Flygt, they beleive that submersible sewage pumps fail frequently, and therefore service is a critical part of their buying decision.