Systems and methods to vent a tank to enhance transporting asphalt when positioned in the tank may include connecting a vapor box to a tank. The vapor box may include one or more vents apertures and a valve associated with the one or more vent apertures and positioned to provide fluid flow between the interior of the vapor box and the exterior. The systems and methods may also include communication via a selector with the valve to cause the valve to switch between an open condition and a closed condition. The selector may be located remotely from the valve, and the systems and methods may also include communication with an indicator via one or more of the valve or the selector to provide an indication of one or more of the valve in the open condition or the valve in the closed condition.

A valve assembly has a housing and a valve shaft rotatable in the housing. A sensor assembly detects the position of the valve shaft. The sensor assembly has an indicator on the housing; and a position sensor on the valve shaft configured to detect a feature of the indicator to determine the position of the valve shaft.

A valve diaphragm includes a flange portion and a diaphragm portion. It is proposed that it includes a data carrier contained in a housing and that the housing is arranged on an edge of the flange portion so as to be at least partially visible when seen from outside onto the edge.

In one aspect, a dialysis fluid cassette includes an inlet fluid line, multiple outlet fluid lines, and a valve including an actuation feature by which the valve can be rotated to fluidly communicate the inlet fluid line with a selected fluid line of the multiple outlet fluid lines.

Provided is a fluid control device that can have a small size, while a member for detecting abnormality of the fluid control device is incorporated. In addition, a result of detecting an abnormality of the fluid control device is made easily recognizable from the outside. A fluid control device 1 includes an information processing module 5 provided in the device, a valve body 11 having a flow path, an actuator body 12 fixed to the valve body 11, a hollow casing 13 that is fixed to the actuator body 12 and has a side surface on which a through hole 133d is formed, a piston 126 that is provided in the actuator body 12 and in which a driving pressure introduction path 126b that communicates with a driving pressure introduction chamber S2 is formed, and an introduction pipe 21 through which driving pressure is introduced, the introduction pipe 21 having one end inserted to the driving pressure introduction path 126b and another end leading to an outside through the through hole 133d of the casing 13.

A check valve includes an upper housing defining an inlet of the check valve, and a lower housing having a seating portion and defining an outlet of the check valve. The check valve further includes a chamber interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet, and a flexible diaphragm mounted in the chamber. The flexible diaphragm selectively permits fluid flow in a first direction, and prevents fluid backflow in a second direction opposite to the first direction. The flexible diaphragm includes a color changing material, and when the flexible diaphragm is seated on the seating portion and bent due to force of the fluid flowing in the first direction, the flexible diaphragm exhibits a color change.

Disclosed is a valve assembly (100) for drainage or deaeration of a hydraulic system (114), The valve assembly (100) comprising: a valve (102) comprising a first side (104) and a second side (106), the first side (104) is configured to be connected to the hydraulic system (114) and the second side (106) is connected to a mouth piece (108), wherein the valve (102) is configured to be set in an open state or in a closed state, wherein, upon the valve (102) is set in the open state, fluid in the hydraulic system (114) is free to pass the valve (102) from the first side (104) to the second side (106); a valve assembly controller (110) comprising a transceiver (202) configured to receive a control signal indicating a start of drainage or deaeration of the hydraulic system (114) and a valve assembly control circuit (204) configured to execute: a valve control function (210) configured to set the valve (102) in the open state or closed state; and a drainage or deaeration function (212) configured to, based on the control signal, instruct the valve control function (210) to set the valve (102) in the open state; and a sensor (112) configured to monitor the mouth piece (108) to obtain sensor data pertaining to fluid leaving the mouth piece (108) upon the valve (102) is set in the open state.

A valve for compressed gas, comprising: a body with an inlet, an outlet and a passage interconnecting the inlet and with outlet; a shut-off device with a shutter mobile in translation along a longitudinal axis of the valve for cooperating with a seat in the passage, the shutter being urged by one or more elastic elements against the seat so as to normally close the passage; an actuating device configured to convert a pressure into a lifting movement of the shutter off the seat so as to open the passage; wherein the actuating device comprises an external circular flange or groove extending around the longitudinal axis and configured for being engaged by a robotic interface providing the pressure to the actuating device.

A utility control system that includes a switch control unit for selectively controlling a utility. The switch control unit may include a visual indicator configured to illuminate a first color when a switch selection mechanism is in a first position to indicate the on state of the utility and a illuminate a second color when the switch selection mechanism is in a second position to indicate the off state of the utility. Control of the utility may be accomplished through generating low-voltage pulses that cause a latching solenoid to latch to a first state or a second state. The utility system may also be provided as a retrofitting kit for a light switch.

A rotary encoder for a valve comprises a rotatable code plate and an optical detector module comprising one or more optical detectors. The code plate defines a set of voids arranged along a set of one or more concentric circular arcs about an axis of rotation. The voids define an angle-dependent pattern over the set of arcs, the pattern comprising a plurality of distinct sectoral elements (A-O, X). At least two of the sectoral elements, located in non-adjacent sectors of the code plate, are identical, but the pattern is non-repeating over a single full rotation of the code plate about the axis. Each optical detector is aligned with a respective concentric circular arc of the code plate. A controller processes time-varying output signals from the optical detectors to determine successive positions of the rotatable code plate.