Abstract: A thermal pressure relief device (TPRD) including a housing having a movable member and a retainer disposed therein. The movable member is movable between an open position and a closed position. A trigger mechanism is disposed between the movable member and the retainer. The trigger mechanism holds the movable member in the closed position and includes a substantially spherical shaped body and a temperature sensitive material disposed in the body. The temperature sensitive material volumetrically expands with an increase in temperature until a predetermined temperature is attained and a breakage of the body occurs. When the body of the trigger mechanism breaks, the movable member is displaced from the closed position to the open position, allowing a fluid to flow through the TPRD.

Abstract: A method and apparatus to periodically inspect and control piston movability are provided that can include using a contactless sensor system through a gas outlet port of a pressure relief device. By moving a stop, relative movement of the piston can be compared to the fixed body reflecting a movability or a blocking of the release piston. Inductive/magnetic or optical borescope sensors can detect piston movement through the gas outlet, for example. The activation function where the piston must move when activated can therefore be tested and maintained.

Abstract: A check valve housing is provided and includes a base having opposite sides which are configured to form linear contact surfaces with check valve flappers pivotably disposed on either side of the base, respectively, and an additional structural member having opposite sides which are configured to form additional contact surfaces with each of the check valve flappers, respectively.

Abstract: A fine control gas valve includes a tee having opposed first and second tee runs co-axially aligned on a longitudinal axis, and a tee branch. A valve assembly is partially received in and connected to the first tee run having a valve disc connected to a drive screw longitudinally moved by drive screw axial rotation. The valve disc includes a first slot on the valve disc having a first end and a wider second end, and a second disc slot as a mirror image of the first disc slot oppositely positioned about the valve disc. A pipe in the second tee run has a first portion of a pipe end face/seat surface in direct contact with a second tee run shoulder. The valve disc when contacting a second portion of the pipe end face/seat surface defines a valve closed condition. The first and second portions are co-planar to each other.

Abstract: An oil pump system can include a housing defining a pocket for an oil pump, a cavity, and a pump outlet passage connecting the pocket to the cavity. Low and high pressure relief passages can be defined by the housing for selectively fluidly coupling the cavity to a pressure relief area. A pressure relief valve positioned in the cavity can comprise first and second ends, first and second internal bores, and a slot in communication with the first internal bore. A biasing member positioned in the second internal bore can biasing the valve to a first position. The valve can translate to a second position aligning the slot with the low pressure relief passage to selectively provide low pressure relief to the oil pump, and can translate to a third position aligning the slot with the high pressure relief passage to selectively provide high pressure relief to the oil pump.

Abstract: Devices for conveying fuel are known having a conveying assembly and a pump holder holding the conveying assembly which has a receptacle for the conveying assembly and a holder connected to the receptacle via three damping elements. The damping elements damp the structure-born noise transmission from the conveying assembly to the adjacent components. The damping elements each have a cantilever section which projects starting from the receptacle into the region of the holder and runs in the radial direction and circumferential direction. The cantilever sections are designed as elastic spring arms, the axial deflection thereof in respect of a pump axis being able to exceed a maximum allowable value by means of external acceleration forces. The mechanical stresses occurring in the spring arms can lead to damage to the spring arms.

Abstract: A drain plug for selectively draining a source of fluid is described, and which includes first, second and third portions which provide coaxially aligned fluid passageways which extend therethrough, and wherein the second portion is moveable relative to the first and third portions between a first position which substantially occludes, and prevents the passage of fluid through the coaxial aligned fluid passageways, and a second position where fluid is allowed to pass therethrough and may be collected for disposal as required.

Abstract: A fluid control system includes a vacuum chamber, a gas supply source to supply gas as a fluid, an exhaust pipe to discharge the fluid from the vacuum chamber, a gas supply pipe to connect the vacuum chamber to the gas supply source, and a pressure sensor to detect an internal pressure of the vacuum chamber. This system further includes a flowmeter placed between the gas supply source and the vacuum chamber, a proportional valve placed between the flowmeter and the vacuum chamber, a pressure controller to control the proportional valve based on output of the pressure sensor, a metering valve placed on the exhaust pipe, and a flow controller to control the metering valve based on an output of the flowmeter.

Abstract: A damping valve arrangement for a vibration damper includes a damping valve body, which has at least one through-flow opening for the damping medium, and at least one valve disk which at least partly covers the through-flow openings under the influence of a closing force. The damping valve arrangement includes at least one spring element which has at least one supporting portion axially supported at another structural component part of the damping valve arrangement, and at least one spring portion disposed at a distance from the supporting portion and which introduces a spring force into the valve disk at least indirectly, wherein the spring force of the spring element is directed counter to the closing force acting on the valve disk, and wherein the spring force of the spring element is less than the closing force of the valve disk.

Abstract: An air pressure harmonizing system comprising: a central chamber hub, the hub having a longitudinally hollow body with a first and second end; a gauge means, positioned between the first and second ends extending radially outwardly from the body; an inlet port means, positioned between the first and second ends extending radially outwardly from the body, wherein the inlet port being configured and dimensioned to receive a standard sized air chuck; an outlet port means, positioned between the first and second ends extending radially outwardly from the body, the means being configured and dimensioned to selectively discharge surplus air to desired target pressure; and a plurality of air exchange ports extending radially outwardly from the chamber, wherein each air exchange port has a flexible conduit connected thereto, each conduit having a proximal and distal end, wherein an air chuck is cooperatively connected to the distal end of the conduit.

Abstract: The invention provides a motor-operated valve including a planetary gear mechanism achieving a greater reduction gear ratio without increasing the number of teeth of the gears, thereby enabling downsizing. In a planetary gear mechanism 1, a sun gear 91 functioning as an input gear receives smaller load than an internally toothed output gear 45, so gears (second planet gears 95) having a smaller module are connected to the planet gears 93, and the sun gear 91 is in engagement with the second planet gears 95. The sun gear 91 is formed of a same module as the second planet gears 95. The rotation of the sun gear 91 is reduced in speed and transmitted to the second planet gears 95, and rotation of the second planet gears 95 rotated at a reduced speed is further reduced by the slight difference in the numbers of teeth of the ring gear 44 and the internally toothed output gear 45 before being output.

Abstract: A filter assembly for an additive manufacturing apparatus has a housing defining a gas inlet and a gas outlet. A filter element is located within the housing between the gas inlet and the gas outlet. The assembly includes valves that can be actuated to seal the gas inlet and the gas outlet. Additionally the assembly has a fluid inlet for allowing ingress of a fluid into the housing. The assembly allows a filter element, which may contain volatile particles, to be changed safely. By sealing the gas inlet and outlet and flooding the housing with a suitable fluid, volatile particles captured by the filter can be neutralised.

Abstract: A check valve includes a valve body defining an internal chamber and a valve seat disposed within the internal chamber adjacent to one of the first and second ends of the valve body. A poppet is mounted for linear movement along a poppet axis within the internal chamber between the first and second ends of the valve body and has a predetermined cross-sectional shape in a direction transverse to the poppet axis, a peripheral rim defining a movement guiding surface, a frustoconical surface provided in one axial end of the poppet and oriented in a direction toward the one end of the valve body, a sealing bead disposed on the frustoconical surface, and a predetermined plurality of passages formed in a predetermined pattern through at least one of the peripheral rim and the frustoconical surface in open communication with an opposed axial end of the poppet.

Abstract: A flow path switching valve includes a tube body including one or more inlets opened to communicate with a fluid supplying source and supplying fluid into an inside of the tube body, outlets opened at opposite sides to the respective inlets and selectively alternately discharging fluid from the inside of the tube body, drains opened at opposite ends and discharging operating fluid introduced through the outlet, and seat units respectively protrude on an inner circumference of the tube body between the inlet(s), outlets and drains. An operating rod, coaxially mounted in the tube body, includes spaced apart projection units and is connected to an operating unit at one end so as to reciprocate axially within the tube body responsive to the operating unit. Valve bodies are movably disposed on an outer circumference of the operating rod and are arranged between the respective projection units to face respective seat units.

Abstract: A ventilation arrangement for the head space of the fuel tank of a vehicle consists of a valve assembly received in a housing (30), which assembly is arranged to produce a maximum pressure, which is not to be exceeded, a minimum pressure below which the pressure must not fall, and a random pressure, for example, for the tank filling process, within the head space. For this purpose a valve which is biased by a spring (25) in the direction towards an atmospheric connector (6) and is characterised by a sealing plate (17), and a valve biased by a spring (19) in the direction towards a connector (5) intended for connection to the head space, and a valve characterised by a sealing head (24) are provided, the latter of which is simultaneously connected to an electromagnetic drive in order to produce the random pressure.

Abstract: Plural door portions are formed by sectioning the gas blowing section of the gas generator with slits. In a state in which gas has been generated by the gas generator, the plural door portions part at the slits and open towards the outside of the casing body. A gas flow path section is connected to a peripheral wall section configuring an deployment space permitting opening of the door portions. The gas flow path section is provided with an upstream portion which is in communication with the deployment space and formed along a direction orthogonal to the direction of gas blowing from the gas blowing section, and an opening portion provided at the gas inflow side, which is set so as to communicate with a space which is between adjacent door portions when the door portions 56 are in a opened state.

Abstract: The fluid system for supplying a dialysis device with permeate has a secondary ring line which is guided within a common insulating hose or another form-fit sheathing. Thus, heat loss is reduced and use is facilitated. The insulating hose having the inner lines is adapted to a flow-optimized coupling handpiece having low dead space, which can preferably be coupled to a mating coupling piece.

Abstract: A connector structure for a pressure pipe includes a female connector and a male connector. The female connector includes a piston and a positioning sleeve therein. The female connector has inner threads. The positioning sleeve has outer threads. A nut is fitted on the positioning sleeve. The outer threads of the positioning sleeve are mated with the inner threads of the female connector. The piston has an insertion section to be inserted in the positioning sleeve. The insertion section has a slot and is provided with a first seal ring. The male connector has threads on an outer wall thereof for engagement of the nut of the female connector. The male connector has a coupling section and a second seal ring.

Abstract: A smart drain valve comprises a support plate, a bolt passing through a center of the support plate, an outer plate connected to a first end of the bolt, an inner plate connected to a second end of the bolt, and a spring positioned between the inner plate and the support plate. The spring is made of a shape memory material.

Abstract: A fluid supply system includes a fluid supply source, a first valve unit, a second valve unit, a first pressure detector, a second pressure detector, a third pressure detector, and a controller. If the pressure detected by the third pressure detector is less than a shutoff pressure at a timing of starting supply of fluid from the fluid supply source, the controller calculates a pressure equalization time from a timing at which opening of a pilot valve is completed to a timing at which a main valve starts closing, based on the pressures detected by the first pressure detector, the second pressure detector and the third pressure detector, sets a valve-open waiting time based on the pressure equalization time, and controls opening of the second valve unit upon elapse of the valve-open waiting time after controlling opening of the first valve unit.