Abstract: A flow regulator for regulating flow of a fluid includes a flow-attenuating labyrinth formed at least in part by a plurality of baffles. At least some of the baffles are implemented as leaf-spring portions, preferably made from metallic material, which are deployed so as to be free to flex in response to variations in a pressure exerted on the leaf-spring portion by the fluid. The leaf-spring portions are configured to cooperate with an adjacent surface to provide multiple-stage pressure-responsive flow regulation.

Abstract: An electrical actuator for actuating a valve or other device includes an electrical motor rotating a rotary member and centrifugal body. The centrifugal body is mounted to the rotary member and is biased to normally assume an inner position with respect to the rotary axis of the rotary member, and to move to an outer position by centrifugal force when the rotary member rotates. An actuator pin is normally biased to a non-actuating position but is movable to an actuating position, to actuate a valve or other device, when the centrifugal body is moved to its outer position by centrifugal force upon the rotation of the rotary member by the electric motor.