An apparatus comprising: a manifold including: a reservoir port to be fluidly coupled to a reservoir of fluid; a pump port to be fluidly coupled to a pump ; a first actuator port to be fluidly coupled to a first chamber of an actuator ; and a second actuator port to be fluidly coupled to a second chamber of the actuator ; a rotor disposed in a cavity formed in the manifold , the rotor having a sealing surface with a first pair of openings connected by a first passageway formed in the rotor , a second pair of openings connected by a second passageway formed in the rotor , and a third pair of openings connected by a third passageway formed in the rotor , the rotor rotatable between: a first actuating position in which the first passageway of the rotor fluidly couples the first actuator port and the pump port , and the second passageway of the rotor fluidly couples the second actuator port and the reservoir port ; a second actuating position in which the second passageway of the rotor fluidly couples the second actuator port and the pump port , and the first passageway of the rotor fluidly couples the first actuator port and the reservoir port ; and a neutral position in which the first actuator port and the second actuator port are fluidly coupled via the cavity in which the rotor is disposed, and the third passageway fluidly couples the pump port and the reservoir port . a manifold including: a reservoir port to be fluidly coupled to a reservoir of fluid; a pump port to be fluidly coupled to a pump ; a first actuator port to be fluidly coupled to a first chamber of an actuator ; and a second actuator port to be fluidly coupled to a second chamber of the actuator ; a reservoir port to be fluidly coupled to a reservoir of fluid; a pump port to be fluidly coupled to a pump ; a first actuator port to be fluidly coupled to a first chamber of an actuator ; and a second actuator port to be fluidly coupled to a second chamber of the actuator ; a rotor disposed in a cavity formed in the manifold , the rotor having a sealing surface with a first pair of openings connected by a first passageway formed in the rotor , a second pair of openings connected by a second passageway formed in the rotor , and a third pair of openings connected by a third passageway formed in the rotor , the rotor rotatable between: a first actuating position in which the first passageway of the rotor fluidly couples the first actuator port and the pump port , and the second passageway of the rotor fluidly couples the second actuator port and the reservoir port ; a second actuating position in which the second passageway of the rotor fluidly couples the second actuator port and the pump port , and the first passageway of the rotor fluidly couples the first actuator port and the reservoir port ; and a neutral position in which the first actuator port and the second actuator port are fluidly coupled via the cavity in which the rotor is disposed, and the third passageway fluidly couples the pump port and the reservoir port . a first actuating position in which the first passageway of the rotor fluidly couples the first actuator port and the pump port , and the second passageway of the rotor fluidly couples the second actuator port and the reservoir port ; a second actuating position in which the second passageway of the rotor fluidly couples the second actuator port and the pump port , and the first passageway of the rotor fluidly couples the first actuator port and the reservoir port ; and a neutral position in which the first actuator port and the second actuator port are fluidly coupled via the cavity in which the rotor is disposed, and the third passageway fluidly couples the pump port and the reservoir port . <EOS>