Abstract: The invention relates to a control system (10) of a fire-extinguishing installation, having at least one control line (11) for controlling a controlling procedure of the fire-extinguishing installation, wherein the control line (11) in a passive operation is unpressurized and the control line (11) in a control operation is impinged with a control pressure, and a safety device (12), fluidically connected to the control line (11), having a pressure equalization chamber (13) in which a holding element (3) and a movable closure element (2) are disposed.

Abstract: A regulating device for use with a pump that has a hydraulically adjustable displacement volume, wherein the regulating device includes an inflow port, a return flow port, an actuating port, a control port, a first control slide valve, and a second control slide valve. The first control slide valve is linearly movable with respect to a center axis, the first control slide valve defining first and second orifices, which are adjustable jointly and in opposite directions. The second control slide valve is linearly movable and defines third and fourth orifices, which are adjustable jointly and in opposite directions. The second control slide valve is accommodated in a linearly movable manner within the first control slide valve.

Abstract: A pressure relief valve assembly is disclosed. The pressure relief valve assembly comprises an inlet manifold, a first pressure relief valve, a second pressure relief valve, and an outlet manifold. The first pressure relief valve is connected to and in fluid communication with the inlet manifold. The second pressure relief valve is connected to and in fluid communication with the inlet manifold and parallel to the first pressure relief valve. The outlet manifold is connected to and in fluid communication with the first pressure relief valve and the second pressure relief valve.

Abstract: An exhaust gas flap includes a flap tube (12), a flap diaphragm (16), in an interior of the flap tube on a pivot shaft (14) rotatable about a pivot axis (A), a pivot drive (30) for the pivot shaft (14) and a coupling device (36) coupling the pivot shaft to a drive shaft (34). The coupling device includes a first coupling area (42) rotationally coupled, positive-lockingly meshed with the drive shaft and a second coupling area (44) rotationally coupled, positive-lockingly meshed with the pivot shaft. A biasing element (58) is supported in relation to the coupling device and in relation to one shaft of the drive shaft and the pivot shaft. The coupling device is axially prestressed, by the prestressing element, away from the one shaft along in the direction of the pivot axis and is prestressed about the pivot axis in relation to the one shaft.

Abstract: A three-way (3-way) Micro-Electro-Mechanical Systems (MEMS)-based micro-valve device and method of fabrication for the implementation of a three-way MEMS-based micro-valve which uses a single piezoelectric actuator. The present invention has a wide range of applications including medical, industrial control, aerospace, automotive, consumer electronics and products, as well as any application(s) requiring the use of three-way micro-valves for the control of fluids. The present invention allows for the implementation of a three-way microvalve device and method of fabrication that can be tailored to the requirements of a wide range of applications and fluid types. The microvalve may employ a novel pressure-balancing scheme wherein the fluid pressure balances the actuator mechanism so that only a small amount of actuation pressure (or force) is needed to switch the state of the actuator and device from open to closed, or closed to open.

Abstract: Provided is a valve for high-pressure gas, wherein a sheet member is provided inside a through hole formed in a valve body of the valve, wherein the sheet member constitutes a channel for high-pressure gas inside the through hole, wherein the sheet member is fixed inside the through hole by a pressing member, wherein an end opening of the through hole is closed by a lid member, wherein a gasket is provided at a peripheral part of the end opening of the through hole, wherein the gasket is sandwiched between the lid member and the valve body, wherein the lid member is pressed toward the valve body by a plug, and wherein a bearing is provided between the plug and the lid member.

Abstract: A valve apparatus for an aircraft fluid system is disclosed including a valve housing and a valve member. The valve member is configured to move between a first position in which fluid is able to flow along the fluid flow path, and a second position in which the fluid flow path restricted. A valve member drive means is configured to operate the valve member via an actuator external to the housing. The valve apparatus further includes a sensor configured to monitor a feature in the housing to determine the position of the valve member.

Abstract: A check valve for a pump delivery port includes a body having inlet and outlet portions joined by a duct and an opening; a curve having an inlet end to be connected to the delivery port and an outlet end to be connected to the body; and a valve member having a disk-shaped locking portion sealingly interacting with an edge of the curve and a locking portion secured in a seat by a lid of the opening. The valve member moves between open and closed positions and has a metal core made while the locking portion is metal-free. The lid cooperates with the locking portion through a protrusion or a cavity and pushes the valve member toward the curve to the closed position and allows the valve member to deflect to the open position under pressure of a working fluid in equilibrium with the weight of the blocking portion.

Abstract: A valve member is mounted on a shaft to pivot within a fluid passage. A control selectively moves a piston in a linear direction to control a position of the valve member in the fluid passage. The piston causes a roller pin to move as the piston moves linearly. The roller pin is mounted in crank collars of a crank shaft such that movement of the roller pin causes the crank collars to rotate crank shaft rotating position, and the valve shaft. The roller pin is mounted within the crank collars by bearings. The bearings each have an outer race associated with a crank collar, an inner race associated with the roller pin, and bearing members separate the inner and outer race. There is a spring bias resisting movement of the inner races relative to said roller pin. An anti-ice system is also disclosed.

Abstract: Provided is an enclosure with an integrated hydrant. The enclosure includes a fluid flow conduit that transfers fluid from a fluid supply tube to a fluid outlet, which may be associated with the backflow preventer. The enclosure has a conduit that carries water from the fluid supply tube to the backflow preventer. Thus, a lower profile, lighter, and more aesthetically pleasing enclosure is provided.

Abstract: Pistons and related methods may be configured to separate fluids and to at least partially prohibit one fluid from traveling to one side of the piston from another side of the piston. Pressure exchange devices and systems may include such pistons.

Abstract: A hydraulic control unit (4) includes a valve bush (12), a valve cover (15) partially closing the valve bush (12) on an end face (S1), a valve slide (13) guided in a longitudinal direction (L) within the valve bush (12), and a housing part (6). The housing part (6) includes a recess (8) matching an external contour of the valve bush (12). An intermediate plate (7) is configured to partially cover the valve cover (15). A spring (14) is arranged within the valve bush (12) and preloads the valve slide (13) in a starting position. The valve bush (12) is inserted, together with the valve cover (15), the valve slide (13), and the spring (14), into the recess (8) of the housing part (6) and jointly form a hydraulic valve (9). The valve bush (12) forms an inlet (19), and the valve cover (15) forms an outlet (31).

Abstract: A one-way valve includes: a cylindrical section, one end of which is inserted into and fixed to an inside of a pipe, the cylindrical section including a through-hole through which oil is passed in an axial direction; and a columnar section housed inside the pipe and including, in another end thereof, a plurality of lateral holes through which oil is passed, flow of oil being blocked when the other end is inserted into a one-side opening section of the cylindrical section.

Abstract: Cleanout conduit valve assemblies for a cleanout conduit may include a vertically oriented valve housing. The valve housing may include a valve inlet end configured to be disposed in fluid communication with the cleanout conduit and a valve discharge end opposite to and generally above the valve inlet end. The valve discharge end may be oriented within a valve discharge plane disposed at a discharge angle of greater than 0 degrees with respect to a horizontal plane. The valve discharge end may have an upper discharge opening side and a lower discharge opening side sloped downwardly from the upper discharge opening side. A valve body may be pivotally carried by the valve housing at the upper discharge opening side of the valve discharge end. Methods of preventing precipitation and runoff on a ground surface from entering a cleanout conduit connected to a sewer service line are also disclosed.

Abstract: A check valve (10) for controlling a flow of fluid by fluid pressure, comprising a housing (11) and a resilient flexible valve element (12) inside the housing (11), wherein the valve element (12) is formed as a hollow and longitudinally tapered body (16) with an open wide end (18) and a closed narrow end (19), and wherein the wide end (18) of the valve element (12), in a default configuration, engages an inner surface of the housing (11) to close the check valve (10) and is deformable by a predetermined fluid pressure from the inlet (13) to open the check valve (10). The tapered body (16) comprises a radially outwardly projecting flange (17) at the wide end (18), which flange comprises a curved outer surface portion (20) having a degree of curvature of 85 to 95 degrees, wherein the housing (11) is formed with a protrusion (29) having a curved surface (30) for engaging the curved outer surface portion (20) of the flange (17).

Abstract: A gas shut-off valve assembly designed to automatically close gas flow in a gas conduit in response to a seismic vibration comprises a door which may be parallel to a port in the conduit and a weight above the door. In some embodiments, the door may be mostly out of the conduit passageway and out of the gas flow allowing for improved gas flow efficiency in the normally open state. Upon sensing a seismic vibration, the weight falls from a platform onto the door causing the door to move into the conduit passageway sealing the passageway. In some embodiments, a port in the passageway is perpendicular to the door's default position in the open state. When the door closes the passageway, the door rotates ninety degrees about an axis into the second closed position to become parallel with the port.

Abstract: A dialysis machine, in particular for hemodialysis and/or hemofiltration, having a dialyzate system and having a water inlet via which the dialyzate system can be connected to an external water supply. The dialysis machine includes a constant flow regulator that is arranged between the water connection and the dialyzate system.

Abstract: A pump unit provides a hydraulic pressure for actuating an actuator in the drive train of a motor vehicle, in particular a clutch actuator or gearbox actuator. The pump unit includes a pump, a storage container for hydraulic fluid, and at least one solenoid valve. The solenoid valve is arranged within the storage container such that it is surrounded by hydraulic fluid.

Abstract: There is provided a flow rate regulating device including a valve body section having a flat valve body surface, a valve seat section having a flat valve seat surface, a regulation mechanism that moves the valve body section along an axis, and a control unit that controls the regulation mechanism, wherein the regulation mechanism has a stepping motor that rotates a drive shaft about the axis, and a moving member that moves along the axis in response to the rotation of the drive shaft and is coupled to the valve body section, and the control unit controls the stepping motor so that the valve body section moves in a movement range in which the valve body surface and the valve seat surface maintain a non-contact state, in accordance with an excitation signal that changes by a micro step unit obtained by dividing a step by a predetermined division number.

Abstract: An emission-capturing apparatus includes a tank having an inlet and an outlet. The apparatus further includes a muffler fluidly coupled with the outlet to intercept fluid exiting the outlet, permit passage of gas through the muffler, and inhibit passage of liquid through the muffler. The apparatus further includes a hose having a tank end and a distal end. The tank end is coupled to the inlet. The apparatus further includes a fitting fluidly coupled to the distal end of the hose. The fitting is configured to be fluidly coupled to an end section of an ejection port of a vehicle to receive an emission from the ejection port.