CPC F02C 7/236 (2013.01) [F01D 21/003 (2013.01); F02C 7/232 (2013.01); F02C 9/18 (2013.01); F02C 9/26 (2013.01); F04B 41/06 (2013.01); F05D 2220/32 (2013.01)] | 17 Claims |
1. A pump selector system, comprising:
a primary pump fluidly connected to provide a primary flow to a fluid destination;
a secondary pump fluidly connected to provide a secondary flow to the fluid destination; and
a selector valve disposed downstream of the primary pump and the secondary pump 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; and
a controllable valve fluidly connected between a low pressure side of either one of the primary pump and/or the secondary pump, a high pressure side of the primary pump, and a back end of the selector valve, configured to provide a high back pressure to the selector valve in a first state of the controllable valve and configured to provide a low back pressure to the selector valve in a second state of the controllable valve.
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