Patent ID: 11911721
Assignee: CUMMINS INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A fuel filtration system, comprising:
a first stage filtration bank, comprising:
a first fuel filter head fluidly coupled to a plurality of first fuel filters; and
a second fuel filter head fluidly coupled to a plurality of second fuel filters, the second fuel filter head separable from the first fuel filter head and mounted so as to be spaced from the first fuel filter head;

a fuel transfer pump downstream from the first stage filter bank;
a second stage filtration bank fluidly coupled to the fuel transfer pump;
a double selector valve coupled to the first fuel filter head and the second fuel filter head and configured to modulate flow between the plurality of first fuel filters and the plurality of second fuel filters, the double selector valve separable from the first fuel filter head and the second fuel filter head, the double selector valve including:
a valve housing comprising a bore, the valve housing defining:
a primary valve inlet port,
a primary valve outlet port fluidly coupled to the fuel transfer pump via a fuel filter line,
a first fuel filtration outlet fluidly coupled to an inlet of the first fuel filter head via a first fuel inlet line,
a first fuel filtration inlet fluidly coupled to an outlet of the first fuel filter head via a first fuel outlet line,
a second fuel filtration outlet fluidly coupled to an inlet of the second fuel filter head via a second fuel inlet line,
a second fuel filtration inlet fluidly coupled to an outlet of the second fuel filter head via a second fuel outlet line;

an elongated body positioned within the bore of the valve housing, the elongated body comprising an exposed portion protruding outwardly from a first end of the valve housing, the elongated body movable from
a first position in which the elongated body fluidly couples (i) the first fuel filtration outlet to the primary valve inlet port while blocking flow to the second fuel filtration outlet, and (ii) the first fuel filtration inlet to the primary valve outlet port while blocking flow to the second fuel filtration inlet to
a second position in which the elongated body fluidly couples (i) the second fuel filtration outlet to the primary valve inlet port while blocking flow to the first fuel filtration outlet, and (ii) the second fuel filtration inlet to the primary valve outlet port while blocking flow to the first fuel filtration inlet; and

a single actuator coupled to the exposed portion of the elongated body to move the elongated body between the first position and the second position, the elongated body configured to move between the first position and the second position so as to bring the second fuel filter head online to permit fuel filtration to continue without requiring an engine shutdown.