Abstract: A device for use with soft robotic devices comprises soft fluidic actuators, a microfluidic/minifluidic valves and channels module, a fluidic module, sensors, and a control module. The actuators are operable to apply predetermined effects to surfaces and/or objects. The microfluidic/minifluidic valves and channels module has micro/mini fluidic channels and on-chip fluidic pressure-controlled pinch valves forming a fluidic network. Each pinch valve has a valve pinch chamber, a membrane layer, and a valve control pressure chamber. The control module receives signals from the sensors and controls the fluidic module to control the pinch valves to induce flow of fluid under pressure to the actuators. An active compression apparel may include the device, and may have a skin contact backing layer and a strain-limiting backing layer sandwiching the actuators which are operable to provide compression to the skin and/or limb of a user through the at least one backing layer.

Abstract: A valve, with a valve housing, through which process medium can flow and in which a valve seat which surrounds a throughflow opening is arranged, to which valve seat a valve element which is arranged on a spindle is assigned in a manner such that the valve element by way of an actuation travel of the spindle is movable between a shut-off position, in which the valve element sealingly bears on the valve seat in a process-medium-tight manner, and an open position, in which the valve element is lifted from the valve seat, and with a fluid-actuated valve drive which includes a drive housing and a drive wall which together with the spindle forms a drive unit and which separates two working spaces from one another, of which working spaces at least one can be subjected to pressure, and with a travel limitation device which for limiting the opening travel of the spindle includes a stop element which is fastened to the drive housing and which with an end section which includes a stop surface projects into a travel lim

Abstract: A safety device for hydrodynamic pressure regulating pipe network includes a gate valve, which comprises at least a valve body and a gate. A water inlet of the gate valve is used to be connected to a water inlet pipeline. A hydraulic driving device, which comprises a hydraulic cylinder, is also included. The hydraulic cylinder includes a cylinder body, a piston and a piston rod. The piston rod is connected to the gate. The lower part of the inner cavity of the cylinder body is connected to the water inlet pipeline through a gate opening power pipelines. The upper part of the inner cavity of the cylinder body is connected to a gate closing driving device, which is used to drive the gate and close the gate valve.

Abstract: An electric-powered fail-safe actuator for use with a valve, where the actuator stores potential energy for conversion to kinetic energy to close or open the valve to the fail-safe position.

Abstract: Solenoid-operated pressure-regulator modules, aircraft inflatable slide assemblies, and methods for assembling solenoid-operated pressure-regulator modules are described. The solenoid-operated pressure-regulator modules include a primary inflation valve, a secondary inflation valve, a secondary valve actuator, a solenoid, an inflatable slide, and a gas source. The solenoid-operated pressure-regulator modules are configured to selectively enable a fluid connection between a gas source and an inflatable slide to enable inflation of the inflatable slide. The primary inflation valve includes a main cavity, a command cavity, an inlet through which a gas enters the main cavity, an outlet, a poppet that controls a gas flow from the inlet to the outlet, and a valve divider separating the main cavity from the command cavity. The secondary inflation valve is fluidly coupled to the outlet of the primary inflation valve.

Abstract: An inflation valve is provided and includes a valve defining main and command cavities and including first and second valve portions and a valve seat defining an outlet, a poppet disposed in the main cavity and including first and second rods to engage with the first valve portion and to extend through the valve seat and the second valve portion, respectively, and a piston disposed in the command cavity and a solenoid valve. The solenoid valve normally prevents main cavity-command cavity fluid flow to engage the poppet with the valve seat by fluid pressure acting on the poppet in the main cavity and permits the main cavity-command cavity fluid flow when energized to disengage the poppet from the valve seat by balanced fluid pressure acting on the poppet in the main cavity and on the piston in the command cavity to permit main cavity-outlet fluid flow.

Abstract: A manually actuated valve assembly includes a valve body defining a flow passage, a valve member assembled with the valve body, an actuator housing assembled with the valve body, an actuator stem having an upper stem portion coupled with a lower stem portion by a coupling, a rotatable actuator drive member coupled to said upper stem portion, and a biasing spring disposed in the actuator housing. The actuator drive member is rotatable between a first stop position corresponding to a fully open valve position, and a second stop position corresponding to a fully closed valve position. The coupling between the upper stem portion and the lower stem portion is configured to provide an over-travel condition between the actuator drive member and said actuator stem configured to provide a closed valve condition at a predetermined rotational position of the actuator drive member that is offset from the second stop position.

Abstract: A hydraulic drive for executing a linear movement includes a motor, a pump, a lifting cylinder having the one linearly movable piston and a cylinder housing with at least one first connection and at least one second connection, a spring arranged such that the piston can be extended or retracted when the spring is in the relaxed state, and at least one first valve with which the first connection and the second connection of the cylinder housing can be fluidly connected. At least one second valve connected in parallel with the first valve is further provided, wherein the first valve has a maximum volumetric throughflow which is greater than the maximum volumetric through-flow of the second valve.

Abstract: A pneumatic pressure regulation valve comprising: a valve inlet; a valve outlet; a piston arranged to control gas flow from the inlet to the outlet; a sense line fluidly connecting the inlet to a pressure regulation chamber and with a pressure relief valve connected thereto to limit the pressure in the pressure regulation chamber; wherein the piston is arranged between the pressure regulation chamber and the valve outlet such that the position of the piston is determined by the relative pressures in the regulation chamber and the valve outlet and the position of the piston controls the flow from the valve inlet to the valve outlet; wherein the sense line comprises a flow restriction upstream of the pressure relief valve. The flow restriction addresses instability that can arise from large volumes of connecting tubes or pipes in the sense line.

Abstract: A valve arrangement including a valve and a valve actuation arrangement is provided. The valve has a known flow profile. The valve includes a valve member and a valve stem operably coupled to the valve member for adjusting the position of the valve member. The valve actuation arrangement is operably coupled to the valve stem. The valve actuation arrangement includes a drive arrangement and a control arrangement. The drive arrangement is operably coupled to the valve stem and configured to adjust an actual stem position of the valve stem based on an actual stem positional signal. The control arrangement is configured to generate the actual stem positional signal. The control arrangement is configured to generate the actual stem positional signal based on an input control signal representing a desired stem position based on a desired flow profile being different than the known flow profile.

Abstract: An actuated valve system operates (open/close) automatically under overpressure condition. The system includes an on/off valve assembly, a spring actuator assembly configured to actuate the on/off valve assembly to open or close a path for the pressurized fluid, a lock mechanism with one locking yoke and two rotatable locking handles, a collapsible pin type pressure sensing assembly configured to trigger the action of the spring actuator assembly, and a pressure sensing line. The collapsible pin type pressure sensing assembly includes a body, a plunger with two stems, one of which is rigidly connected with the locking yoke, and a collapsible pin, which mechanically fails when the fluid pressure reaches the predetermined level. When the collapsible pin fails, the plunger moves together with the locking yoke, and the locking yoke loses its restriction to the motive element of the spring actuator assembly, and thus trigger the operation of the actuated valve system.

Abstract: A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.

Abstract: The invention relates to a pressure medium system, in particular a hydraulic system, having a fluid pump for delivering a drive fluid with a certain delivery flow rate and a certain fluid pressure, and having a control unit which switches the fluid pump on or off in order to set a predefined setpoint value of the fluid pressure, wherein the fluid pump exhibits an inertia-induced overrun when switched off, such that during the overrun of the fluid pump, the fluid pressure still rises while the fluid pump has already been switched off. It is proposed that, during the increase of the fluid pressure to the predefined setpoint value, the control unit switches the fluid pump off before the fluid pressure has reached the predefined setpoint value. The invention also includes a corresponding operating method.

Abstract: A dual control shut off system, such as a dead man system for a blasting system, blasting equipment, or other equipment having both pneumatic and electric safety control circuits, may include an electric dead man's switch or a pneumatic dead man's switch. An embodiment of the dual control dead man system is for wet abrasive blasting systems used for cleaning, preparing surfaces, removing coatings, and/or other abrasive blasting operations. Embodiments of the dual control shut off system provide the ability to conveniently switch between an electric and pneumatic shut off system.

Abstract: A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.

Abstract: A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.

Abstract: A driving and adjusting device of a passive shuttle-type shut-off valve is provided. The problems of a big valve body structure size, a non-random angle installment, a single drive mode, low stability and reliability, a high temperature and poisonous material entering into the driving and adjusting device and unadjustable on-off speed and low volume in the prior device are solved. A main body (33) is connected with an upstream pipe (1) and a downstream pipe (3). A pressure port (2) on the upstream pipe (1) is connected with the driving device. A double acting cylinder (34) is provided in a valve sleeve (21). The left and right chambers of the double acting cylinder are connected with the valve clack (24). The driving device is composed of a regulating valve, a directional valve, a check valve, a boost-insulation valve and an accumulator (18). It can select the drive mode and adjust the on-off speed and the flow volume of the valve.

Abstract: A valve assembly comprising an inlet port, an outlet port, and a diaphragm configured to selectively allow communication between the inlet port and the outlet port, the diaphragm including a first side adjacent the ports and a second side opposed to the ports. The valve preferably includes at least one bleed path between the first side and the second side of the diaphragm with a one way flow device configured to allow flow from the first side to the second side of the diaphragm and prevent flow from the second side to the first side of the diaphragm. The valve may include a first bleed path from the inlet port to the second side of the diaphragm and a second bleed path from the outlet port to the second side of the diaphragm. Either bleed path, or both, may comprise a check valve mounted in the diaphragm.

Abstract: The invention relates to a control device for an extracting unit in the face of a mine, for actuating the hydraulic actuator in the sense of drawing, stepping, setting, and having a plurality of main valves for connecting the actuator of the extracting unit to a main pressure line and a main return line, and a similar plurality of pilot valves, each associated with a main valve for adjusting same and connected to the main pressure line via a pilot pressure line common to all pilot valves and connected to the main return line via a return line common to the main valves and the pilot valves. The pilot pressure line can be shut off and the return line can be blocked off from the main return line and connected to a measuring device for measuring escaping hydraulic fluid.

Abstract: An apparatus for providing flushing fluid at different rates has a valve for controlling flow through a housing, the valve having a reset area to close the valve, a first bleed valve for constantly providing high pressure fluid to the reset area through a first path, a second bleed valve for providing high pressure fluid to the reset area through a second path, and an actuator. The actuator has a first position in which fluid is prevented from escaping from the second path, a second position in which fluid is allowed to escape from the second path and the second bleed valve is activated, and a third position in which fluid is allowed to escape from the second path and the second bleed valve is deactivated.

Abstract: A system for regulating pressure supplied to a transmission control element, includes a control pressure source and line pressure source, a latch valve that opens and closes communication with the line pressure source in response to control pressure, and a regulator valve including a spool for regulating line pressure and producing control element pressure when the latch valve is closed, and an auxiliary piston responsive to line pressure and contacting the spool for connecting line pressure to the control element when the latch valve is open.

Abstract: A flush valve assembly including a discharge receiver with a plug opening therein, a sleeve, a main valve assembly positioned within the sleeve, and a main diaphragm sealingly connected between the main valve assembly and the sleeve. The main diaphragm and the main valve assembly define a control chamber on an upper side thereof and an inlet region on a lower side thereof. The assembly also includes a discharge plug with a flange portion configured to be received in the plug opening in the discharge receiver. When the flush valve assembly is in a non-pressurized condition, the flange portion of the discharge plug is not seated within the plug opening of the discharge receiver, and when the flush valve assembly is in a pressurized condition, the flange portion of the discharge plug is seated within the plug opening of the discharge receiver. The flushing operation may be electronic and/or manual.

Abstract: The microvalve device includes a pilot microvalve and a pilot operated spool valve. The pilot microvalve includes a pilot input orifice; a pilot output orifice, at least one of the pilot input orifice and the pilot output orifice having a cross-section flow area that changes as the pilot microvalve is actuated; and a passageway providing fluid communication between the pilot input orifice and the pilot output orifice. The pilot operated spool valve includes a spool having a surface in fluid communication with the passageway; a spool input port; and a spool output port, at least one of the spool input port and the spool output port having a cross-section flow area that changes as the spool is actuated. The spool valve is operable by the pilot microvalve such that a ratio of the cross-sectional flow area of the spool input port to the spool output port will substantially equal to a ratio of the cross-sectional flow area of the pilot input orifice to the pilot output orifice.

Abstract: A spool valve assembly includes a spool that is moveable by differential pressure across the spool.

Abstract: A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.

Abstract: A relief system for process fluids under pressure. The system includes a normally open isolation valve in fluid communication with a process system under pressure through an upstream conduit. A buckling pin actuator is in fluid communication with the upstream conduit through a sensing line. A spring activated actuator is engaged with the isolation relief valve in order to retain the isolation valve in a closed position. A buckling actuator bypass valve is supplied with non process fluid pressure to an input port and the buckling actuator bypass valve also includes a first output port to the spring activated actuator and a second output port to a vent whereby pressure in the process system above a predetermined level will actuate the buckling pin actuator, moving said buckling actuator bypass valve to said second outlet port to vent and thereby moving the spring activated actuator in order to open the isolation valve.

Abstract: A pneumatic brake system that includes at least one pneumatic latching valve; a single device, such as a solenoid, for providing momentary pilot signals to pneumatic latching valve; a source of pressurized supply air in communication with the pneumatic latching valve; a spring brake or other pneumatic device in communication with the pneumatic latching valve; and, optionally, an indicator device for monitoring and displaying the state of the pneumatic latching valve. Upon receiving a first momentary pilot signal the pneumatic latching valve changes from closed to open and delivers pressurized air to the spring brake. Upon receiving a second momentary pilot signal, the pneumatic latching valve changes from open to closed and exhausts pressurized air from the spring brake to the external environment. The valve remains “latched” in its current state until the signaling device is energized and the next momentary pilot signal is received.

Abstract: A voting solenoid system and method is configured to selectively apply fluid pressure above and below a threshold value, to a fluid node. The voting solenoid arrangement includes first and second solenoid valve pairs, each pair including first and second solenoid valves. The valve pairs are located in parallel fluid communication with a fluid pressure source, each of the first and second solenoid valves being alternately actuatable between energized and de-energized states. The solenoid arrangement is configured so that a change of state of the first and second valves of either of the valve pairs alternately applies fluid pressure above and below the threshold value, to the fluid node.

Abstract: A microvalve device for controlling the supply of pressurized fluid to a load in a fluid circuit, and having multiple internal fluid conduits for providing pressure feedback.

Abstract: A percussive device and method having, inside a machine housing (3), a reciprocally moveable percussive piston (2), the movement of which is controlled by a control valve (5), which is arranged to alternatively connect a chamber to a pressure source and to low pressure in dependence on a signal corresponding to the axial position of the percussive piston, and a valve (16) arranged to allow adjustment of the axial position of the percussive piston at which the signal is transmitted, by opening and blocking of a connection between one or more control channels (10, 11, 12, 13) and the control valve.

Abstract: A system and a method for partial stroke testing of a critical valve using a bypass valve includes flowing two streams of gas simultaneously through a bypass valve, opening the critical valve with the gas from the bypass valve, and determining a calibration time interval for closing the opened critical valve to a preset partial stroke testing position. The method includes determining a measured time interval for closing the opened critical valve, creating a tolerance band, and comparing the measured time interval to determine if the critical valve passes the partial stroke testing. The system includes a two stage bypass valve, having four solenoid valves. The system includes a processor with a memory having partial stroke testing logic. Each solenoid valve and the bypass valve include a pressure sensor.

Abstract: Membrane valves and latching valve structures for microfluidic devices are provided. A demultiplexer can be used to address the latching valve structures. The membrane valves and latching valve structures may be used to form pneumatic logic circuits, including processors.

Abstract: The present invention provides a semiconductor manufacturing apparatus having a slit valve control system including first and second process chambers disposed adjacent to each other, a slit aperture disposed between the first and second chambers, a slit valve to open and close the slit aperture between first and second chambers, an air source to operate the slit valve, a pressure supply flow path connecting the slit valve with the air source, and a pressure regulator installed on the supply flow path to regulate pressure supplied from the air source to the slit valve.

Abstract: A valve assembly is disclosed that includes a main valve, a pilot valve, and means providing fluid communication between the main valve and the pilot valve. The main valve includes an inlet, outlet, and means adapted to selectively open and close fluid flow between the inlet and the outlet. The pilot valve includes a housing having a first port, a second port, and a third port, and a piston disposed within the housing. The piston cooperates with the housing and the means providing fluid communication to selectively establish fluid communication between the first port of the pilot valve and one of the inlet and the outlet of the main valve.

Abstract: A microvalve device for controlling fluid flow includes a body defining a chamber having first and second ends. The first end is in communication with a source of command pressure. The second end in communication with a source of load pressure. A micromachined spool valve is disposed in the chamber between the first and second ends for sliding movement by differential pressure across the spool valve between a first position in which allows fluid flow between the source of load pressure and a source of supply pressure and a second position which allows fluid flow between the source of load pressure and a pressure vent. The spool valve has a closed position intermediate the first position and the second position which restricts fluid flow between the source of load pressure and both the source of supply pressure and the pressure vent. The spool valve is moveably connected to the body.

Abstract: An emergency isolation valve has a valve plug in a valve body connected to a pipeline. The valve plug is connected to a valve shaft around which a sector gear is provided and engaged with a rack of a piston rod in a cylinder. The piston rod has a piston at one end and is connected to a compression spring at the other end. The piston is moved by air supplied into a cylinder from a compressed air source via a fluid control and a solenoid selector valve. Air supply stops and a discharge hole of the cylinder is opened, so that air is discharged to the outside. The piston is returned by the compression spring to close the discharge hole. At the same time stop of the piston rod is detected by a sensor thereby checking whether to actuate the valve plug normally even during operation.

Abstract: An object is to provide a directional control valve device and a fluid pressure cylinder device using the same that can flow a large quantity of fluid without an additional hydraulic source even if a reciprocating pump is used, and that does not add any constraint on design of the fluid pressure cylinder. A directional control valve device includes a moving valve element that can move in a reciprocating manner, a first passage for connecting the second port (PT2) with the first port (PT1) by using a part of a movement path of the moving valve element as a part of the passage when the moving valve element is in a position of a first movable end, a second passage for connecting the second port (PT2) with the third port (PT3) by using an internal passage of the moving valve element as a part of the passage when the moving valve element is in a second movable end, a spring for pressing the moving valve element toward the first movable end.

Abstract: A valve assembly is disclosed that includes a main valve, a pilot valve, and means providing fluid communication between the main valve and the pilot valve. The main valve includes an inlet, outlet, and means adapted to selectively open and close fluid flow between the inlet and the outlet. The pilot valve includes a housing having a first port, a second port, and a third port, and a piston disposed within the housing. The piston cooperates with the housing and the means providing fluid communication to selectively establish fluid communication between the first port of the pilot valve and one of the inlet and the outlet of the main valve.

Abstract: A microvalve device includes a pilot valve and a pilot operated valve. The pilot valve includes a first layer having openings and a second layer having a chamber in communication with the openings, and a movable member for controlling fluid flow. The pilot operated valve includes three plates. Two the openings, and pressure apply and release channels in communication with a spool portion of the pilot operated valve. The spool is movable to allow from a second fluid source to a load. The third plate includes a first source port in communication with a first fluid, the pressure apply and release channel, one of the first plate ports, one of the openings, a first port in communication with a first reservoir, a second port is in communication with the second fluid source and a load port in communication with a load.

Abstract: A valve includes a housing with a first port and a second port. The valve may also include a first valve member operable to meter fluid flow between the first port and the second port. Additionally, the valve may include valve controls operable to control the position of the first valve member at least partially with fluid supplied to a control chamber. The valve controls may include one or more additional valve members operable to meter fluid flow to the control chamber and also fluid flow from the control chamber. The one or more additional valve members may include a pilot poppet operable to meter fluid flow from the control chamber. The valve controls may be operable to control the position of at least one of the one or more additional valve members at least partially as a function of the position of the first valve member.

Abstract: A sprinkler includes an outer case and a riser mounted for reciprocation within the case. The riser supports a nozzle, an impeller, and a drive linkage connecting the nozzle and the impeller. A diaphragm valve is mounted in outer case beneath the riser and includes a valve member vertically reciprocable within a valve support housing to engage and disengage a valve seat. The valve seat can reciprocate relative to the valve support housing to reduce mechanical loading.

Abstract: A coupling solenoid valve having a main valve unit and a solenoid operating unit, of which both side faces in the valve-width direction correspond to a first coupling face and a second coupling face for coupling another solenoid valve, wherein a binding member is movably attached to the main unit, this binding member is provided with an engaging hook protruding on the first coupling face side, a hook-engaging portion is formed on the second coupling face side of the main valve unit, and the hook is engaged with the engaging portion of the adjacent solenoid valve, thereby coupling the adjacent solenoid valves so as to be mutually connected.

Abstract: A coupling solenoid valve, of which both side faces in the valve-width direction are coupling faces for coupling another solenoid valve, including a main valve unit for switching a fluid channel using a spool, and a solenoid operating unit for driving the spool, wherein a housing of the main valve unit is divided into plurality of blocks, a valve hole for accommodating the spool is formed in a center block, a bottom block is made up of a synthetic resin, plurality of coupling communication holes are formed in this bottom block, and also a connection tube is formed in an integrated manner.

Abstract: A coupling solenoid valve having a main valve unit and a solenoid operating unit, of which both side faces in the valve-width direction correspond to a first coupling face and a second coupling face for coupling another solenoid valve, wherein pilot valves are detachably attached to the top and bottom faces of a center base extending from an adapter block, electroconductive fittings for electrically connecting between coil terminals and board terminals of each pilot valve, and folding-type elastic terminal portions are provided on both ends, these elastic terminal portions are flexibly in contact with the coil terminals and the board terminals from the side-face direction.

Abstract: An electromechanically-assisted control system for use in a second-stage regulator. Regulator control assembly (20), also referred to as EMA assembly (20), includes a mechanical actuator sub-assembly (21) and an electromechanical actuator (EMA) sub-assembly (22) for controlling airflow through single air supply line (23). EMA sub-assembly (22) includes electronically controllable actuator (ECA) (34), which removably seals EMA orifice (36) in wall (30) of pilot chamber (32). ECA (34) is electrically connected with and controlled by control electronics (38). The control electronics include programmable microprocessor (40), which is electrically connected with charge and discharge electronics (42), both of which are electrically connected with power supply (44). Alternatively, regulator control assembly (20?), also referred to as all-electronic (AE) assembly (20?), has only an EMA sub-assembly and no mechanical actuator sub-assembly.

Abstract: A flush valve structure to control flush water through a pressure difference mainly includes a case, a solenoid assembly, an upper intermediate board, a lower intermediate board and a main water ball. The upper intermediate board has a small water pressure release hole. The lower intermediate board has a holding trough mating a medium water valve. The solenoid assembly can open the small water pressure release hole to generate a pressure difference to actuate the medium water valve to form a greater pressure difference so that the main water ball is lifted rapidly to fully open the a main water discharge opening to flush maximum amount of water in a shortest period at the flushing start time.

Abstract: A double valve flusher includes a body, a separating plate, an upper and a lower valve base, a movable valve, a film valve, a fixing member, and an electromagnet. An upper leak room is formed between the film valve and the upper valve base. A leak room is formed between the separating plate, the lower valve base and the movable valve contained in a chamber in the body. The upper leak passageway in the upper leak room and the upper valve base is blocked or opened by the core of the electromagnet, thus controlling the film valve in disfiguring to block or open the leak passageway of the leak room and the lower valve base. Then the movable valve is controlled to move up and down to flush or stop flushing water into a urinal where this flusher is positioned.

Abstract: A gas conversion assembly generally has a gas inlet and a gas outlet. The assembly includes a control mechanism for regulating the flow of gas from the inlet to the outlet. The control mechanism is constructed and arranged to adjust from regulating the flow of a first gas to regulating the flow of a second gas. The control mechanism has an actuator for switching the control mechanism from its first arrangement for regulating a first gas to its second arrangement for regulating a second gas.

Abstract: A manual-automatic water faucet includes a shell installed inside with a water intake base, a water outlet valve, an electromagnetic valve, an induction device and a control device. The control device is composed of a valve rod, a spindle and a revolving button. The revolving button is able to actuate the valve rod to rotate or actuate the spindle to shift axially. When the valve rod is actuated to rotate, it can control water temperature, and when the spindle is actuated to shift axially, it can control the faucet to supply water automatically or manually.

Abstract: A circuit (10) for operating a bi-directional air motor (12) of a valve closure system for enabling a tank valve to be discretionally operated to either open or closed condition either at the tank by attending personnel or from a remote location, with the capability of closing the tank valve in the event of emergency from a remote location in the absence of attending personnel. The circuit can be constructed using two commercially available valve assemblies ((24, 26).