FUEL DELIVERY PUMP SELECTION

In accordance with at least one aspect of this disclosure, a pump selector system can include a primary pump (104) fluidly connected to provide a primary flow to a fluid destination (110), a secondary pump (204) fluidly connected to provide a secondary flow to the fluid destination, and a selector valve (112) disposed downstream of the primary pump and the secondary pump. The selector valve can be configured to toggle between a first position configured to allow flow from the primary pump to flow to the fluid destination and to block flow from the secondary pump to the fluid destination, and a second position configured to allow flow from the secondary pump to flow to the fluid destination and to block flow from the primary pump to the fluid destination.