Dan,
There is nothing different, besides the name. Shur-flo and Flo-jet are manufacturers names for pumps. Such as Cat and General. Different strokes for different folks.
I have used Shur-flo and Flo-jet, and don't really prefer one to the other. Shur-flo seems to be higher, but more available, in my area anyway.
Craig
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Craig Knight
www.powerwashunlimited.com