The Bravo pumps are not designed to operate for long periods. The part that fails is the plastic turbine fan. This gets hot and expands and then starts hitting the edges and subsequently fails. I've repaired about 20 Bravo pumps all with the same problem. 5 or so minutes is the maximum before they need to cool down. On the other side the piston part of the pump is heavy duty and works fine for getting the air floors to the right PSI.
A couple of years back we started to see the Chinese variants of the Bravo pump hit the market. Smart guys they were, in that they stripped the Bravo pump, pinpointed the weak areas inside the pump and beefed it up. The chinese version has exactly the same dimensions and look, but has heavier duty turbine workings - and for half the price.
The guys at Bravo were very good to deal with in that all the pumps were repaired under warranty, so they obviously knew of the problems. Which is still a problem.