Abstract: Example aspects of an over-pressure protection system and a method for operating an over-pressure protection system are disclosed. The over-pressure protection system can comprise a main body housing defining a main body chamber; a fluid received in the main body chamber, the fluid defining a fluid pressure; a pressure sensor configured to measure the fluid pressure of the fluid, the pressure sensor configurable in an activated mode and a deactivated mode; and a control system configured to place the pressure sensor in the deactivated mode when the fluid pressure is equal to or above a pre-determined threshold pressure.

Abstract: A backflow preventer including a body having an inlet for connection to an upstream portion of a plumbing system and an outlet for connection to a downstream portion of the plumbing system, a first check valve and a second check valve located in the body for preventing the reverse flow of water between the outlet and the inlet. An inlet pressure zone is positioned between the inlet and the first check valve, an outlet pressure zone is positioned between the outlet and the second check valve, and an intermediate pressure zone is positioned between the first and the second check valves. Position sensors sense the positions of the check valves, and pressure sensors sense the pressures in the zone. A controller in communication with the position sensors and the pressure sensors calculates the opening and closing pressures of the check valves.

Abstract: The invention relates to a device for gas and/or vacuum distribution (1) for a sheet processing machine (100), the device includes: at least one controllable pilot valve (4; 40), a fixed body (5) including: at least one main gas inlet (7) to be connected to a gas or vacuum source, at least one main gas outlet (8) intended to be connected to at least one suction cup and/or to at least one nozzle, at least a first and a second control gas openings (10, 11), at least one of the openings being connected to the controllable pilot valve (4; 40), at least one housing (9) having a first chamber (9a) communicating with the main gas inlet (7) and outlet (8) and a second chamber (9b) communicating with the first and second control gas openings (10, 11), at least one mobile piston (6) axially movable in the housing (9) by the action of a control gas or vacuum supplied in the second chamber (9b) through the at least one control gas opening (10, 11) connected to the controllable pilot valve (4; 40), the mobile piston (6) b

Abstract: A liquid junction assembly for providing a flow connection between two tubular conduits. The assembly includes respective bodies configured to define elongated passages of respective first and second cross sections to receive and locate the respective tubular conduits, a plate with at least one hole therethrough of a third cross section smaller than the first and second cross sections, and a seat for the plate, defined in a face of one or both of the bodies. The bodies and the plate are assembled with the plate in the seat and the elongated passages and the hole aligned along a common axis.

Abstract: A power tool including a moveable piston, a motor capable of driving the moveable piston to perform work on a work piece, and a distance sensor configured to sense a movement of the moveable piston. The distance sensor operable to provide sensor information indicative of the movement of the piston. A controller receives the sensor information from the distance sensor. The controller operates the motor to perform work on the work piece based in part on the sensor information that the controller receives from the distance sensor.

Abstract: Provided are a branch tee for sprinkler pipes, which is capable of selectively sprinkling fire extinguishing water only on a fire occurrence area and preventing the skipping effect although there are many obstacles to sprinkling water or a distance between sprinkler heads is narrow, and a sprinkler pipe system including the branch tee.

Abstract: The present invention relates to a magnetic strainer that is configured to have a cap disposed in a filter insertion hole formed on the center of a branch pipe having an inlet and an outlet coupled to a pipe and to have upper and lower magnets arranged with repulsive forces, while placing a repulsive space therebetween, in such a manner as to be accommodated in both ends of a magnet case in a longitudinal direction of the magnet case to allow conductors in impurities to be easily collected to the inside of a filtering screen disposed between the filter insertion hole and the cap to filter the impurities, so that if ascending and descending means disposed under the magnet case operates, the upper magnet is descended to the repulsive space to easily remove the conductors collected on the top end surface of the magnet case.

Abstract: A multi-speed transmission with hydraulically actuated shift rods, wherein an actuating pressure (p_B) is applicable by a valve device (15) and shuttle valves (2C to 6D) to piston chambers (2A to 6B) of pistons (2 to 6), the actuating pressure being adjustable by valves (16, 17). The piston chambers (2A to 6B) can be brought into operative connection with a low-pressure region (52) by the shuttle valves (2C to 6D) and a prefilling valve (32, 33) or by the shuttle valves (2C to 6D), the valve device (15), and the valves (16, 17). Each of the shuttle valves (2C to 6D) has a spring assembly (2E to 6F), by which the shuttle valves (2C to 6D) are held below a pressure threshold of the actuating pressure (p_B) in an operating state that connects the piston chambers (2A to 6B) to the low-pressure region (52) by the prefilling valve (32, 33).

Abstract: A water hydraulic test on test pipes having a wide range of sizes is conducted accurately, efficiently, and economically, by using a plurality of booster cylinders arranged in parallel with respect to a test pipe and having respective boosting ratios increasing in stages. A plurality of servo motor driven pumps arranged in parallel is used as a drive source for the plurality of booster cylinders. Before a water pressure on an output side of the booster cylinder reaches a pressure near a test pressure, the plurality of servo motor driven pumps operates simultaneously. Then, the plurality of servo motor driven pumps stops operating except one and the water pressure on the output side of the booster cylinder is increased to the test pressure by the one servo motor driven pump. During pressure increase, the plurality of booster cylinders is used in turn in order of increasing boosting ratio.

Abstract: An air maintenance system includes a rotating inner ring secured to a vehicle wheel, a stationary outer ring maintaining a constant angular position, an occlusion roller rotationally fixed to the stationary outer ring, the occlusion roller having a protruding portion centered axially at a radially outer surface of the occlusion roller with axially outer portions of the occlusion roller being radially recessed from the protruding portion and supported by bearing surfaces of the rotating inner ring, spacer rollers rotationally fixed to the stationary outer ring and rotationally supported by the bearing surfaces, and a flexible tube defining a pump cavity, the air maintenance system pumping a fluid from the ambient environment into a pneumatic tire by applying an occluding force against the flexible tube, periodically occluding portions of the pump cavity.

Abstract: A hydraulic control device for an automatic transmission for a motor vehicle includes a shiftable throttle valve allocated to one or more shift elements of a plurality of hydraulically actuated shift elements. The shiftable throttle valve hydraulically connects a respective pressure-adjusting device of the one or more shift elements to a respective clutch cylinder of the one or more shift elements. The shiftable throttle valve is shiftable into at least a first shift position and a second shift position. A hydraulic resistance between a hydraulic transmission controller and the one or more shift elements of the plurality of hydraulically actuated shift elements is larger in the second shift position relative to the first shift position.

Abstract: A system for detecting a type of hydraulic device. The system includes a hydraulic device. The system also includes a power supply having an engine and a controller. The controller is configured to detect a voltage of a signal from the hydraulic device, to categorize the signal as a type of signal of multiple types of signals based on the voltage, and to control a hydraulic output based on the voltage and the type of the signal.

Abstract: A transportable test system having a control room module, a first IMR test module, and a second IMR test module. The test modules may have fasteners that permit assembly into a unitary package of predetermined overall dimension (i.e. size and shape) such as a standard shipping container dimension. A first IMR test module may have a clean fluid provider and/or supply reservoir, and a second IMR test module may have a used fluid collector and/or collection reservoir. The system may include pressurization, hose restraint, fluid containment, module stabilization/mobilization, lifting, cleaning, and control subsystems.

Abstract: A filter assembly comprises a housing open at a first end and holding a filter element therein and an end plate secured to the housing and closing the first end and enclosing the filter element within the housing. The plate includes a first inlet opening, a second inlet opening, and an outlet opening. The filter assembly further includes a fluid flow controller disposed between an end of the filter element and the end plate. The flow controller includes a valve including a first portion cooperating with the first inlet opening and a second portion cooperating with the second inlet opening. The fluid flow controller further includes a spring-loaded valve seat in communication with the valve and providing resistance to movement of the first portion of the valve.

Abstract: A system for detecting a type of hydraulic device. The system includes a hydraulic device. The system also includes a power supply having an engine and a controller. The controller is configured to detect a voltage of a signal from the hydraulic device, to categorize the signal as a type of signal of multiple types of signals based on the voltage, and to control a hydraulic output based on the voltage and the type of the signal.

Abstract: A bubble liquid bottle includes a bottle body, a pad covering a mouth of the bottle body, a straw connected to a communication opening of the pad and inserted into the bottle body, and a head. The head is disposed on the mouth and includes a main body having outlet, inlet, and communication channels, a handle, and a pressure-relief device disposed in the communication channel and including a stopper, an elastic member for driving the stopper to block communication between the outlet channel and the communication opening, and a ring located above the outlet channel and sleeving the stopper. The handle is pivoted to the main body and inserted into the stopper for moving the stopper upward. When an internal pressure of the bottle body is greater than a predetermined value, the stopper is moved upward by the internal pressure to make the outlet channel communicated with the communication opening.

Abstract: A micro bleed hole connector for use in intermittent pneumatic compression devices includes a body made of a material that is sturdy, durable and compression resistant. The bleed hole connector resembles industry-standard air tube connectors, and has a micro bleed hose connecting its hollow lumen to the outside, ambient air. In use, the connector is inserted between the air input tube of an intermittent pneumatic compression device and an air supply tube, which is connected to an air pump. The air pump inflates and deflates the intermittent pneumatic compression device, which is placed on a patient's limb. In the event deflation of the compression device is retarded by air pump failure or air supply tube occlusion, the micro bleed hole dissipates air sufficiently to prevent injury to the patient's limb. Air dissipation through the bleed hole during normal operation is minimal and does not impact therapeutic application.

Abstract: A fuel routing system of a gas turbine engine includes a primary fuel circuit in communication with a fuel source and a fuel distribution manifold. Also included is a secondary fuel circuit extending from the primary fuel circuit to a plurality of fuel nozzles configured to direct fuel to a plurality of combustor chambers. Further included is a main fuel flow control valve disposed in the primary fuel circuit for restricting a fuel flow to the fuel distribution manifold upon removal of an electrical load operably coupled to the gas turbine engine. Yet further included is a plurality of check valves disposed between the secondary fuel circuit and the primary fuel circuit for restricting the fuel flow between the secondary fuel circuit and the primary fuel circuit.

Abstract: A check valve for an aircraft galley plumbing system comprises a valve body including an inlet for a potable water supply line, and first and second outlet ports leading to a distribution manifold. In a preferred embodiment, quick disconnects that include reverse flow inhibitors seal the valve's output ports. A vertical channel extends through the valve body for draining water through the valve, which is coupled to a pressure line connection port that exerts pressure from the aircraft's pressure system. A piston reciprocating across the vertical channel and biased by a spring is in fluid communication with the pressure line connection port, such that when a water pressure is introduced from a water pressure line to the pressure line connection port of sufficient to collapse said spring, the piston blocks said channel, and when the water pressure is insufficient to collapse said spring then the piston retracts to open said channel, allowing fluid to pass thereinthrough.

Abstract: A priming valve device for a beverage machine. The device includes a casing assembly including a water inlet, a water outlet, and a drain and venting portion for discharging water or air during priming and a valve assembly associated with the casing assembly. The valve assembly includes a valve member which is moveable to a closed position which closes the water outlet by elastic return when the pressure in the water inlet decreases under the elastic return pressure of the valve member.

Abstract: A cooling system for internal combustion engines provides directed flows of heated or cooled coolant to various engine components and/or accessories as needed. By providing directed flows, the overall coolant flow volume is reduced from that of conventional cooling systems, allowing for a smaller capacity water pump to be employed which results in a net energy savings for the engine. Further, by reducing the overall coolant flow volume, the hoses and/or galleries required for the directed flows are reduced from those of conventional cooling systems, providing a cost savings and a weight savings. Finally, by preferably employing an impellor type water pump, the expense of an electric water pump and its associated control circuitry can be avoided. The direct flows are established by a multifunction valve which, in a preferred implementation, comprises a two-plate valve wherein each plate is operated by a wax motor.

Abstract: An over-pressure protection device has a valve or valve body defining an inlet, a first flow path or cavity, and an outlet. A moveable member or plunger defines an internal flow path, and has at least one passage formed through a wall thereof. A sealing member forms a fluid-tight seal between the plunger and the valve, while a biasing member or spring acts between the valve and the plunger. The plunger is disposed within the first flow path of the valve and is movable between a closed position and an open position when exposed to pressurized fluid. In the closed position, the sealing member forms a seal between the plunger and the valve, preventing fluid communication between the inlet and the outlet, but does not form a seal when the device is in the open position, allowing fluid communication with the outlet. The plunger is biased by the biasing member toward the open position.

Abstract: An adjustable automatic recirculation valve includes a valve body, a main valve disk, a bypass valve and a dynamic adjustment assembly. The main valve disk is positioned within the valve body and opens in response to fluid flow between a main inlet and a main outlet. The bypass valve controls the flow of fluid between the main inlet and the recirculating outlet. A dynamic adjustment assembly, housed within the valve body controls the operating lift associated with the maximum opening of the bypass valve to regulate fluid flow capacity to the recirculating outlet.

Abstract: A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is positioned at an initial start position and is movable between a closed position to provide a minimum exhaust gas flow and an open position to provide a maximum exhaust gas flow. The start position is orientated at a negative angle relative to the closed position.

Abstract: A fast back flow device is provided in a relief valve. A body of the relief valve is constructed in a configuration of dual return flow, wherein the valve body forms a communication passage in a water inlet side thereof to communicate a water releasing channel formed in a lower portion thereof. The water releasing channel receives therein a water releasing valve including a collar and a stacked disk set biased by a resilient element. When the operation of a pump supplies a preset pressure, the water releasing valve assembly is automatically closed and when the pressure drops down to be smaller than the resilient force, the resilient element opens the valve to immediately release water and lower pressure. The assembling of the relief valve is made easier and released unused water can be collected and reused, making the spraying device more environment-protective.

Abstract: System for filling a tank comprising a fill pipe and a pipe head comprising an inlet valve and a moveable stopper in the head under the valve, characterized in that the valve comprises a peripheral part and a central part and in that only the peripheral part is coupled to the stopper and capable of causing the opening and/or unlocking of the latter under the pressure of a large-diameter fill nozzle, the central part being moveable with respect to this peripheral part so as to be able to swing under the action of a smaller-diameter fill nozzle, without acting on the stopper, while being connected to this same peripheral part so as to be entrained and swung with it under the pressure of a large-diameter fill nozzle.

Abstract: A system disconnector for physically disconnecting an upstream liquid system from a downstream liquid system by means of an outlet valve (35;135) depending on the pressure difference between the upstream and the downstream liquid system comprises an upstream backflow preventer (48; 148), a downstream backflow preventer (88), and an outlet valve body in the form of a piston (26; 126) arranged between the backflow preventers (48, 88). The pressure difference at the outlet valve body (26; 126) between the inlet pressure and the medium pressure between the backflow preventers counteracts a biasing spring (82; 182) acting in the opening direction of the outlet valve body. An actuating member (64; 164), which is exposed to the inlet pressure on one side and to the medium pressure on the other side is adapted to move between two stops (54, 46; 171, 146) against the power of a spring (86; 182) to compensate for small changes in inlet pressure and prevent dripping of the valve.

Abstract: A system disconnector for disconnecting an upstream liquid system providing an inlet pressure from a downstream liquid system by a release valve (34) in response to a pressure drop between the systems, includes an upstream backflow preventer (40), a downstream backflow preventer (64) and a release valve body piston (18) arranged between the backflow preventers (40, 64). A pressure difference between the inlet pressure and a middle pressure between the backflow preventers (40,64) counteracts a spring (60) biasing the release valve body in the opening direction, the release valve body (18) having an effective pressurized surface (d) smaller than the surface effective for the inlet pressure. A hollow space (74) defined by the release valve body is connected to the middle pressure (66). A shiftable seat (76) provided in hollow space (74), is movable with respect to the release valve body to a fixed stop (84) upstream of the valve seat (32).

Abstract: A pressure releasing device contains a tubular body member with a slidable slider member inside. The pressure releasing device is connected to the output of the high-pressure pump and high-pressure water will flows through the pressure releasing device when the pump is turned on and, when the pump is turned off, the high-pressure backflow will force the slider member to quickly block the inlet of the pressure releasing device. A pressure releasing opening controlled by a low-pressure valve is provided along the tubular body member. When the pump is turned off, the high-pressure backflow will be quickly released through the pressure releasing opening and the low-pressure valve helps to keep the water pressure inside the hose below a low pressure level to prevent dripping.

Abstract: The invention relates to a valve assembly of a pipe disconnector for separating a service water system which is arranged to be filled or re-filled from a drinking water system, comprising upstream and downstream backflow preventers which both close in the direction from the service water system to the drinking water system, and a relief valve, which is exposed to the pressure of the drinking water system in closing direction and which is adapted to connect the space between the backflow preventers to a drain, when this pressure ceases. A pipe disconnector is to be provided, which is easy to clean and to service. Furthermore, a valve assembly is to be provided which can be used equally for pipe disconnectors of the type CA and for pipe disconnectors of the type BA.

Abstract: A hydraulic spool valve is provided in which two inlet bores and an outlet bore lead into a housing. A spool-valve piston which is under the influence of compression springs on both sides can be displaced longitudinally in the housing. When a difference in pressure of the hydraulic fluid in the inlet bores occurs, the inlet bore which conducts the lower pressure in each case is connected to the outlet bore. The two compression springs are pre-stressed and have an additional expansion path. During the displacement of the spool-valve piston from a neutral central position into an extended intermediate position, the two compression springs therefore remain in operative connection with the spool-valve piston, in which case the spring forces counterbalance each other until the intermediate position is reached.

Abstract: The invention recites an unloader valve operable to direct a flow of fluid. The valve includes a housing having a bypass opening, an inlet opening, an outlet opening and an internal chamber between the inlet opening and the outlet opening. A shuttle valve is disposed within the internal chamber and is movable between a first position wherein the flow of fluid is substantially directed to the bypass opening and a second position wherein the flow of fluid is directed to the outlet opening. The shuttle valve includes an internal flow path having a venturi therein. A biasing member biases the shuttle valve in the first position.

Abstract: A pressure blowdown system for an oil-injected rotary screw air compressor having an output conduit mounted to a high pressure side of the compressor and having a feedback conduit mounted to an intake side of the compressor, includes a rigid container having a gas reservoir therein, the container having a rigid plate mounted thereon closing the reservoir, a rigid valve housing mounted to the plate, the housing defining a valve spool cavity and having a pressure blowdown vent, the cavity having first and second opposite ends, a valve spool slidably snugly mounted in the cavity for sliding translation between the first and second ends of the cavity, respectively into first and second positions in the cavity. Resilient means are mounted in the cavity for resiliently urging the valve spool from the first end towards the second end of the cavity. A first gas passageway in the plate provides unobstructed fluid communication between the first end of the cavity and the feedback conduit of the compressor.

Abstract: The invention recites an unloader valve operable to direct a flow of fluid. The valve includes a housing having a bypass opening, an inlet opening, an outlet opening and an internal chamber between the inlet opening and the outlet opening. A shuttle valve is disposed within the internal chamber and is movable between a first position wherein the flow of fluid is substantially directed to the bypass opening and a second position wherein the flow of fluid is directed to the outlet opening. The shuttle valve includes an internal flow path having a venturi therein. A biasing member biases the shuttle valve in the first position.

Abstract: A check valve with an elongated body and a hole extending from an inlet end to an outlet end. A piston assembly is mounted within the body and can include a piston, a check valve seal and a piston spring. The piston spring biases the piston to a first piston location preventing air from flowing from the inlet toward the outlet end. The check valve seal can be positioned on the piston assembly to seal against either a check valve seat or the inside diameter of the hole to restrict air flow when the piston is in the first piston location. Movement of the piston to a downstream piston location can remove the check valve seal from the check valve seat and/or from the inside diameter of the hole, allowing air to flow from the inlet end toward to outlet end.

Abstract: A check valve with an elongated body and a hole extending from an inlet end to an outlet end. A piston assembly is mounted within the body and can include a piston, a check valve seal and a piston spring. The piston spring biases the piston to a first piston location preventing air from flowing from the inlet toward the outlet end. The check valve seal can be positioned on the piston assembly to seal against either a check valve seat or the inside diameter of the hole to restrict air flow when the piston is in the first piston location. Movement of the piston to a downstream piston location can remove the check valve seal from the check valve seat and/or from the inside diameter of the hole, allowing air to flow from the inlet end toward to outlet end.

Abstract: An automatic valve includes a housing having an inlet passage and a passage to outlet, a linearly movable shaft disposed in the housing having two stops separated by a predetermined distance, a hydraulic unit connected to the housing and to the linearly movable shaft, and a sealing flange having at least one aperture accommodating the linearly movable shaft. The sealing flange being movable on the linearly movable shaft to close and open the passage to outlet through force of one of the stops on the sealing flange, the linearly movable shaft being biased to urge the sealing flange toward the passage to outlet by contact with one of the stops wherein the sealing flange in position to close the passage to outlet from the inlet passage despite limited movement of the linearly movable shaft.

Abstract: An automatic valve includes a housing having an inlet passage and a passage to outlet, a linearly movable shaft disposed in the housing having two stops separated by a predetermined distance, a hydraulic unit connected to the housing and to the linearly movable shaft, and a sealing flange having at least one aperture accommodating the linearly movable shaft. The sealing flange being movable on the linearly movable shaft to close and open the passage to outlet through force of one of the stops on the sealing flange, the linearly movable shaft being biased to urge the sealing flange toward the passage to outlet by contact with one of the stops wherein the sealing flange in position to close the passage to outlet from the inlet passage despite limited movement of the linearly movable shaft.

Abstract: This invention relates to a valve device for at least one hydraulic motor adapted to drive a high inertia mass. The device comprises two principal conduits, respectively intended to be connected to the two principal ducts (supply or exhaust) of the motor. It comprises a communication conduit for placing said principal conduits in situation of communication when the fluid pressures in these conduits are substantially equal and for placing said principal conduits in a situation of isolation in which they are isolated from one another when the fluid pressures in these two conduits are different. The device further comprises delaying means adapted to limit the speed of passage between the situation of communication and the situation of isolation. The communication conduit may include a calibrated restriction. Similarly, the delaying means may include calibrated restrictions.

Abstract: A reverse flow prevention apparatus is provided so as to drastically decrease pressure loss without installing an independent pressure regulator mechanism therein. With the reverse flow prevention apparatus, a flow path running along a straight line is provided in an outer box, and is partitioned by a diaphragm into an upstream region, and the downstream of a midstream region. An inner cylindrical body is provided at the center of the diaphragm, integrally therewith, so as to fit slidably into the upstream region of the outer box, an escape valve is provided on the downstream side of the inner cylindrical body in such a way as to be able to freely open and close a valve port provided between the midstream region and the downstream region while the escape valve is energized towards valve opening by the urging of an escape valve spring, and first and second check valves are provided inside the inner cylindrical body and the downstream region of the outer box, respectively.

Abstract: A valve (60) for use in a brake system (10) through which a source (32) of fluid charges an accumulator (24) to a desired fluid pressure level and through which fluid pressure present in a conduit (52) is communicated to a reservoir (33) in the absence of the flow of fluid from the source. The valve (60) has a housing (62) with a bore (64) therein with an entrance port (66) connected to the source of fluid (32), an exit port (68) connected by a flexible conduit (52) to the accumulator (24) and exhaust port (70) connected to the reservoir (33). A sleeve (72) which is located in bore (64) has an internal bore (74) with a first diameter (82) for retaining a first ball (90), a second diameter (80) for retaining a linkage member (94) and a third diameter (86) for retaining a second ball (92). A first spring (93) urges the first ball (90) toward a first seat (84′) formed between the first (82) and second (80) diameters.