Abstract: A pulse shot-type flow rate control device including first and second shutoff valves, a tank, a pressure sensor, and a controller is caused to perform two or more processes. In each process, the controller repeats pulse shots of alternately causing the first shutoff valve and the second shutoff valve to open and close, changes a way of the pulse shots based on a pressure difference between the pressure after filling and the pressure after discharge, and controls a volume flow rate. In each process, the controller stores, as an optimal filling time, a filling time when the volume flow rate is controlled to a target flow rate, and opens and closes the first shutoff valve by using the optimal filling time in a first pulse shot in the next process.

Abstract: A drain cleaner apparatus for dispensing a cleaning composition into a condensate drain line of an air handler of an air conditioning system includes an apparatus outlet in fluid communication with an exterior of the drain cleaner apparatus, a dispenser device configured to be actuated to selectively dispense an amount of the cleaning composition through the apparatus outlet, a connector interface, a dispenser device, and a controller. The connector interface detachably couples with a complementary connector interface of a cartridge having a cartridge reservoir configured to hold the cleaning composition, to establish flow communication from the cartridge reservoir to the dispenser device. The dispenser device is between the connector interface and the apparatus outlet. The dispenser device may be actuated to selectively dispense the amount of the cleaning composition from the cartridge reservoir and through the apparatus outlet. The controller may actuate the dispenser device without manual intervention.

Abstract: A multi-control valve device includes: a valve block including a plurality of valve holes; a plurality of spools movably housed in the plurality of valve holes in a one-to-one correspondence; one or more attachment parts provided on the valve block; and a plurality of solenoid valves provided on the one or more attachment parts in a one-to-one correspondence with the plurality of spools and each of which reduces a primary pressure, outputs a secondary pressure to a corresponding one of the plurality of spools, and moves the spool. The valve block includes a primary pressure supply passage through which the primary pressure is supplied to each of the plurality of solenoid valves.

Abstract: A monitoring system is disclosed. The monitoring system comprises: a nozzle steam trap (3) including a supply portion (10) into which water vapor is supplied, and a discharge portion (11) which discharges liquid water contained in the water vapor; a temperature measurer (20) that measures a temperature of the discharge portion; a transmitter (24) that transmits temperature information containing the temperature measured by the temperature measurer; a receiver (7) that receives the temperature information; a determiner (8) that determines whether an abnormality is present in the nozzle steam trap based on the temperature information; and a notifier (9) that issues a notice when the determiner determines that the abnormality is present. A first discharge-side reference temperature lower than the boiling point of the water and a second discharge-side reference temperature higher than the boiling point of the water are set for the discharge portion.

Abstract: The present disclosure provides a method for smart gas pipeline frost heave safety management and an Internet of Things system. The method includes: obtaining gas transmission data and gas pipeline data and determining gas pressure change data of a target point based on the gas transmission data and gas pipeline data; predicting temperature change data of the target point based on the gas pressure change data, the temperature change data including gas temperature change data and soil temperature change data; predicting, based on the temperature change data, the gas pipeline data, and the gas pressure change data, and in combination with environmental data, a frost heave degree data of the target point; and determining, based on the frost heave degree data of the target point, the gas transmission adjustment data and a frost heave prevention plan.

Abstract: Fluid channel sealing devices, frangible seals, fluid circuits, associated controllers and methods of using the same are provided for controlling fluid distribution using a reconfigurable blocking element having first and second portions to establish a first configuration free of any open channels such that fluid is prevented from flowing through the channel and a second configuration where the first and second portions are separated to establish an open channel and allow fluid to pass.

Abstract: A switching valve includes a base having a bottom wall. The switching valve includes a body that couples to the base to define a cavity between the body and the bottom wall. The body includes through holes that are each fluidly coupled to the cavity. The switching valve includes a driven slider set disposed within the cavity and having sub-sliders evenly distributed about the base. The switching valve includes driving rods each movably coupled to one of the through holes of the body. Each driving rod moves in a linear direction relative to the through holes to block or unblock each through hole. Each sub-slider slides in a linear direction responsive to movement of the driving rods. Only one through hole is unblocked at one time.

Abstract: An estimator comprises: an acquisitor to acquire a plurality of data pairs each containing a valve body opening of the vacuum valve and the chamber pressure at the valve body opening; and an operator to operate the gas species characteristic value and the first chamber volume estimation value, based on an exhaust's expression representing a relationship among the second effective exhaust rate, a flow rate of a gas introduced into the vacuum chamber, a chamber volume, and a chamber pressure, the plurality of data pairs acquired in the acquisitor, and correlation data between the valve body opening and the second effective exhaust rate about the predetermined known gas.

Abstract: A flow management system includes an expandable device configured for attachment to a wall surface of a conduit and being adjustable between an expanded configuration and a collapsed configuration, an electric actuator in fluid communication with the expandable device, and a control module. The control module is configured to control the electric actuator to flow a current to the expandable device to expand the expandable device for compacting a flow blockage within the conduit to create a channel adjacent the flow blockage and to terminate a flow of the current to the expandable device to collapse the expandable device for opening the channel to a fluid flow within the conduit.

Abstract: An apparatus may be provided that includes a substrate having one or more microfluidic valve structures. The valve structures are non-elastomeric, non-polymeric, non-metallic membrane valves for use in high-vacuum application. Such valves are functional even when the fluid-control side of the valve is exposed to a sub-atmospheric pressure field which may generally act to collapse/seal traditional elastomeric membrane valve.

Abstract: The valve for pressure compensation and/or for emergency venting of a container, preferably of a housing of a vehicle battery, has a housing (6) with an inlet (6a) that is closable by at least one valve element (23) subjected to a closing force in a first position. The housing (6) is at least partially gas-permeable and preferably water-tight, and has at least one outlet (26) which is located behind the valve element (23) when the valve element (23) assumes its first position. So that in case of a malfunction even larger quantities of gas can be guided to the exterior through the valve, is the valve element for an increased pressure surpassing the closing force at the inlet (6a) is adjustable in the direction toward a second position against the closing force, in which the valve element (23) at least partially opens the outlet (26) such that the outlet (26) is directly connected in flow communication with the inlet (6a).

Abstract: A pressure relief device includes a housing member having an inner space, a piston member provided in the inner space of the housing member, and a fusible member provided in a region below the piston member. The piston member includes an upper end region formed at an upper end in the up-down direction (H), and a connection region which is formed below the upper end region and extends downward from the upper end region while being connected to the upper end region. A first width (W1) of the upper end region in a left-right direction (A) is equal to a second width (W2) of the connection region in the left-right direction (A) or less than the second width (W2).

Abstract: An example valve assembly includes a housing having an accumulator fluid passage configured to be fluidly coupled to an accumulator, a supply fluid cavity configured to be fluidly coupled to a source of fluid, a reservoir fluid cavity configured to be fluidly coupled to a reservoir of fluid, a head fluid cavity configured to be fluidly coupled to a head-side chamber of a hydraulic actuator, and a rod fluid cavity configured to be fluidly coupled to a rod-side chamber of the hydraulic actuator; a main spool that is axially-movable within the housing; and a balancing spool that is axially-movable within the housing based on an axial position of the main spool.

Abstract: Improved valve seal and integrity systems and methods are disclosed. Pressure in an internal cavity of a valve may be monitored and stored to assist in determining whether one or more seals in the valve are leaking. Internal cavity temperature may also be recorded and monitored to assist in determining whether there are any valve seal leaks. Expected pressure corresponding to a detected internal cavity pressure (that may be determined by correlating temperature and known fluid properties) may be compared to detected internal cavity pressure to assist in determining the existence of valve leaks. Internal cavity pressures and pressure differentials over time may be used to determine remaining valve seal life, leak severity, and/or integrity of a check valve on the valve. Indications of seal life, leak severity, seal integrity, and/or check valve integrity may be displayed to an end user or otherwise provided to a database or computer.

Abstract: Specified is a water supply apparatus, a mixing apparatus (1) being provided for mixing, in a mixing container (3), water conveyed in the mixing apparatus (1). Arranged relative to the mixing container (3) is a base apparatus (2) which has a base chamber (9) that is hydraulically connected to a water pipe (11, 12, 13) of the water supply apparatus and has an opening to the surroundings. A sealing device (10) is installed in the base chamber (9) for the purpose of closing off the opening of the base chamber (9) from the surroundings. The sealing device (10) has a weak point wall region (17) whose pressure strength is lower than the pressure strength of wall regions of all the other components of the water supply apparatus which, in the operating state, enclose cavities that can be filled with water, and which separate these cavities that can be filled with water from the surroundings.

Abstract: The single-action emergency thermal valve comprises a body with a through channel for coolant supply through its inlet in the direction of its outlet, and a fuse link in the through channel of the body; the fuse link consists of at least two parts, each of the two parts completely overlaps the section of the through channel, the parts are made of materials with different melting points, and are located in the through channel in series with the increase of the melting temperature of each successive part in the direction from the through channel inlet to its outlet, wherein the body can have transverse ribs and/or transverse ridges at the location of the fuse link.

Abstract: A system for controlling a flow rate of a fluid through a valve includes a controller. The controller is configured to receive a raw flow rate measurement from a flow rate sensor assembly configured to measure the flow rate. The controller is further configured to apply a flow rate measurement filter to the raw flow rate measurement to generate a filtered flow rate measurement. The controller is further configured to control actuation of an actuator configured to change the flow rate using the filtered flow rate measurement. The controller is configured to automatically adjust the flow rate measurement filter in response to detecting an event that causes stoppage of the actuation of the actuator.

Abstract: Methods, products, and systems for monitoring and improving pipeline infrastructure are disclosed. At least one embodiment of the invention comprises a smart-sensing coating, which is applied to one or more interior surfaces of a pipe or pipeline. The coating may comprise a dual-purpose metamaterial, which itself may comprise a plurality of acoustically active and tunable particles that may be embedded in a low-friction, corrosion-resistant, omniphobic polymer matrix. The particles may comprise a multi-layered assembly with a high-density material core, elastic matrix filler, and a stiff outer shell. The particles may further be specifically engineered to form an acoustic band gap at a chosen ultrasound frequency. At this chosen frequency, the particles are very nearly acoustically opaque, preventing the transmission of any and all sound. As such, the position and distribution of the particles inside the pipelines can be clearly distinguished.

Abstract: Disclosed herein are embodiments of a mass flow control apparatus, systems incorporating the same, and methods using the same. In one embodiment, a mass flow control apparatus comprises a flow modulating valve configured to modulate gas flow in a gas flow channel, a sensor device, such as a micro-electromechanical (MEMS) device, configured to generate a signal responsive to a condition of the gas flow, and a processing device operatively coupled to the flow modulating valve and the sensor device to control the flow modulating valve based on a signal received from the sensor device.

Abstract: A process fluid temperature measurement system is provided. The process fluid temperature measurement system includes a thermowell configured to couple to a process fluid conduit and extend through a wall of the process fluid conduit. The process fluid temperature measurement system also includes a temperature sensor assembly disposed within the thermowell, the temperature sensor assembly including a sensor capsule having at least one temperature sensitive element disposed therein. The temperature sensor assembly also includes a vibration sensor coupled to the sensor capsule, the vibration sensor being configured to produce a vibration signal in response to detected vibration. The process fluid temperature measurement system further includes transmitter circuitry coupled to the vibration sensor and configured to receive the vibration signal and produce an output based on the received vibration signal.