Apparatuses, systems, and methods are disclosed for fluid flow control. A container is shaped to receive a liquid. An inlet is configured to allow the liquid to enter the container. An outlet is configured to allow the liquid to exit the container. A float is disposed within the container. A valve is actuated based on a position of the float within the container to open the valve at a first liquid level within the container and to close the valve at a different liquid level within the container.

A water shut-off device is disclosed. The water shut-off device has an inlet port and an outlet port. The water shut-off device includes: a housing fluidly connected to the inlet port and the outlet port, the housing having an opening at its upper end and including: a valve for switching the device between an open configuration and a closed configuration, the valve permitting flow of water through the device in the open configuration and prohibiting flow of water through the device in the closed configuration; a gear wheel secured to the housing and operatively coupled to the valve, the valve being actuated by rotations of the gear wheel; and an anchor in mechanical communication with the gear wheel, the anchor including: a container for receiving water flowing through the opening; and at least one pallet connected to the container, the at least one pallet being configured to catch against one or more teeth of the gear wheel, the anchor being rotatably mounted at a fixed pivot in the housing such that the anchor swings about the pivot as water collects in the container, the swinging of the anchor about the pivot causing the at least one pallet to alternately catch and release a tooth of the gear wheel, thereby causing the gear wheel to rotate in a first direction.

An overfill valve associated with a drop tube segment fluidly connected to a fluid reservoir is described. The overfill valve includes a valve body positioned within the drop tube segment and a non-contact valve actuator positioned exterior to the drop tube segment and operable to actuate the valve body from an open position to a closed position without requiring any physical penetration through the wall of the drop tube segment. The non-contact valve actuator has a first position in which the non-contact valve actuator does not actuate the valve body from the open position to the closed position in a second position, achieved when the liquid reservoir reaches a predetermined level approaching the capacity of the liquid reservoir, the non-contact valve actuator actuating the valve body from the open position to the closed position when the non-contact valve actuator obtains the second position.

An actuator system for an injection molding system includes a double acting pressurized fluid actuator having a piston drive movable in a cylinder space, a flow control valve for regulating a flow rate of pressurized fluid to and/or from the cylinder space, a flow sensor for detecting the flow rate of pressurized fluid to and/or from the cylinder space, and an electronic controller for controlling the flow control valve to regulate the flow rate of pressurized fluid to and/or from the cylinder space depending on the flow rate detected by the flow sensor.

A venturi vacuum drawback assembly includes a fluid supply passage that supplies the fluid to the device, a fluid return passage that returns the fluid to the device, a shutoff valve positioned on the fluid supply passage, a bypass passage, a bypass valve positioned on the bypass passage, and a venturi valve positioned on the bypass passage downstream of the bypass valve. The bypass passage includes an inlet and an outlet. The inlet is connected to the fluid supply passage upstream of the shutoff valve, and the outlet connected to the fluid return passage. The venturi valve includes a venturi inlet, a venturi outlet, and a primary orifice positioned between the venturi inlet and the venturi outlet. The primary orifice is connected to a drawback opening on the fluid supply passage by a conduit. The drawback opening of the fluid supply passage is positioned downstream of the shutoff valve.

An actuator system for an injection molding system includes a double acting pressurized fluid actuator having a piston drive movable in a cylinder space, a flow control valve for regulating a flow rate of pressurized fluid to and/or from the cylinder space, a flow sensor for detecting the flow rate of pressurized fluid to and/or from the cylinder space, and an electronic controller for controlling the flow control valve to regulate the flow rate of pressurized fluid to and/or from the cylinder space depending on the flow rate detected by the flow sensor.

An overfill valve associated with a drop tube segment fluidly connected to a fluid reservoir is described. The overfill valve includes a valve body positioned within the drop tube segment and a non-contact valve actuator positioned exterior to the drop tube segment and operable to actuate the valve body from an open position to a closed position without requiring any physical penetration through the wall of the drop tube segment. The non-contact valve actuator has a first position in which the non-contact valve actuator does not actuate the valve body from the open position to the closed position in a second position, achieved when the liquid reservoir reaches a predetermined level approaching the capacity of the liquid reservoir, the non-contact valve actuator actuating the valve body from the open position to the closed position when the non-contact valve actuator obtains the second position.

Water outlet valve structure and a humidifier having the same. Opening or closing of the water outlet valve structure is controlled by a control structure. The water outlet valve structure includes a flow channel including an inlet and an outlet. The control structure is capable of sealing or opening the outlet of the flow channel. The outlet of the flow channel is capable of being sealed or opened by the control structure of the water outlet valve structure, to control the open and close of the flow channel, thereby simplifying the water outlet valve structure. In a further aspect, since only the outlet is sealed, specific requirements for the structure of the control structure are relatively low, thereby allowing the control structure to be simplified.

An entire fluid supply line or an entire fluid controller constituted by a plurality of fluid control devices is precisely monitored. A fluid controller accumulating and having a plurality of fluid control devices. The fluid control devices include an operation information acquisition mechanism acquiring an operation information in the fluid control devices, an identification information storage storing a self-identification information, and a communication processing unit transmitting the operation information acquired by the operation information acquisition mechanism to an external terminal with the self-identification information stored in the identification information storage at different timings for each of the fluid control devices.

A fuel control valve includes a case and a movable body that is movably housed in the case. The case has a valve seat surface shaped in an inner cone shape whose inner diameter increases toward a tip. A valve element surface is operable by the movable body, and is in contact with the valve seat surface along a seal line in a valve closed state. The valve element surface is separated from the valve seat surface in a valve open state. Plural grooves are disposed between the tip and the seal line to expand radially outside from the valve seat surface. Plural projections are defined between the grooves to intermittently leave the valve seat surface.