Actually Sta_Rite bought Berkley then Pentair bought Sta-Rite, along with Myers, Aermotor (I think) and a host of other Water related products like Hydromatic Sump, Effluent and Sewage pumps, Hayward Swimming Pool Products and other things I am not even aware of. What they don't own, ITT does, they have Red Jacket, Goulds and many others.
There are only four Independent manufacturers of pumps that I am aware of. National PUmp Co, A.Y. McDonald, Ruth Berry and Hydroflo. I'm sure there are a few others, but I don't know who they are. They don't have the name recognition the big guns have. Like Goulds Nascar, that must cost the Drillers a few extra bucks.
bob...