Abstract: A normally closed solenoid-operated valve is composed of a stationary element provided at one end of a stationary sleeve, a movable element slidably inserted in the sleeve to face the stationary element and provided at an external surface thereof with a communication groove which axially extends between the opposite ends thereof for permitting the flow of the operating fluid, and an electromagnetic coil for exciting the stationary element and the movable element. A damper chamber is defined by an annular shim provided between the lower end surface of the stationary element and the top surface of the movable element. When the damper chamber is closed by the lower end surface of the stationary element and the top surface of the movable element, a dent groove makes the damper chamber communicate with the communication groove.

Abstract: A solenoid plunger (36) is disposed for reciprocation in a plunger pocket that is formed by the stationary parts of a solenoid-type actuator (10). A flexible diaphragm (22) closes the plunger pocket's open mouth and is deformed by movement of a plunger (36) between an open position, in which it is displaced from a valve seat (20), and a closed position, in which it is seated on the valve seat and thereby prevents flow from a valve inlet (16) to a valve outlet (18). The diaphragm thereby isolates the plunger from the fluid thereby being controlled, but a separate, incompressible fluid fills the chamber in which the plunger reciprocates. A through-plunger passage (44, 56) provides a low-flow-resistance path for the incompressible fluid to flow into and out of the portion (52) of the plunger chamber behind the plunger as the plunger moves. This reduces actuation time and thus the energy required for an actuation.

Abstract: An electric motor actuated stop/check valve for industrial use such as liquid pumping systems which has a controlled opening and closing rate when liquid flow is in a forward direction but closes quickly upon reverse flow of liquid with no action from the electric motor actuator. A valve disc having an elongated disc stem contacts a valve seat when in a closed position to stop liquid flow. Actuation of the valve is by an electric motor which provides movement to an actuator rod which contacts the disc stem. The disc stem and the actuator rod are not connected which allows the valve disc and disc stem free movement, by action of the momentarily back-flowing liquid, to a back-flow preventing closed position when liquid forward flow is reversed. No action by the electric motor is required. A spring biasing the valve disc toward the closed position and a hydraulically operated valve closing-speed regulator reduces or eliminates slamming of the valve disc against the valve seat.

Abstract: A hydraulic damper cylinder 270 is provided for an electromagnetic actuated internal combustion engine cylinder valve 20. The damper includes a piston 68 slidably mounted within the damper cylinder 270. The piston 68 bifurcates the cylinder 270 into a first control volume 74 and a second control volume 76. The first and second control volumes are fluidly connected by an inboard flow path 372. Along the extreme ends of travel, the flow path 372 is blocked by the piston 68 and damping occurs through fluid transfer through an outboard flow path 374.

Abstract: A water supply shut off system includes a water pressure delay device which delays the transmission of any apparent change in water pressure between the input and the output side of the valve to the control input of the valve. This delay allows the input and output pressures to have a chance to generally equalize without falsely tripping the device. The water supply shut off system can also include a thermal expansion/contraction device that allows thermal expansion and contraction of a fluid medium, such as water, when the shut off device is used with a device to be protected such as a hot water heater.

Abstract: The electromagnetic valve actuator of the preferred embodiments include a valve head that moves between an open position, a middle position, and a closed position; a plunger coupled to the valve head; and a housing defining a cavity that surrounds the plunger and contains a fluid. The cavity cooperates with the plunger and the fluid to provide increasing resistance as the valve head moves from the middle position to the closed position. Because of the increased resistance, the valve head softly seats against a valve seat, which minimizes noise, vibration, and harshness within the vehicle.

Abstract: A retracting telescoping automatic fire sprinkler is disclosed. In a dry system, the sprinkler extends to its operating position under system pressure that is applied in response to a preaction signal. When system pressure is removed, as in after a test is completed, the sprinkler automatically retracts to its original position.

Abstract: A fuel refilling assembly for transferring fuel from a nozzle to a fuel tank of a motor vehicle. The fuel refilling assembly includes a fuel filler neck extending out from the fuel tank. The fuel filler neck has a tank end disposed adjacent the fuel tank and a distal end. A housing is fixedly secured to the distal end of the fuel filler neck. The housing defines an opening for receiving the nozzle therethrough. A flapper door is pivotally secured to the housing and is movable between a closed position for preventing access from the housing to the fuel filler neck, and an open position for allowing the nozzle to transfer fuel to the fuel tank via the fuel filler neck. A dampener mechanism abuts the flapper door. The dampener mechanism dampens the movement of the flapper door as the flapper door moves from the open position to the closed position upon the removal of the nozzle.

Abstract: A hydraulic actuator (20) with a built-in hydrostatic pressure compensator (111) is provided. The actuator (20) includes an actuator housing (30), a compensator cylinder portion (86), a compensator piston portion (94), a first compensator piston chamber (98), a second compensator piston chamber (103), a hydraulic port (106), and a hydraulic via (108). The compensator cylinder portion (86) is located within the actuator housing (30), is fixed relative to the housing (30), and has a compensator cylinder internal chamber (88) formed therein. The compensator piston portion (94) slidably fits within the compensator cylinder internal chamber (88). The first compensator piston chamber (98) is formed between a first side (101) of the compensator piston portion (94) and the compensator cylinder portion (86). The second compensator piston chamber (103) is formed between a second side (102) of the compensator piston portion (94) and the compensator cylinder portion (86).

Abstract: An electromechanical valve including an energy absorption system to reduce or eliminate the force with which the armature contacts an electromagnet pole face. The energy absorption system absorbs kinetic energy from the armature assembly prior to the armature plate contacting the electromagnetic pole face to reduce the velocity or impact force of the armature plate against the electromagnet, thereby reducing noise, vibration, and harshness concerns associated with many electromechanical valve actuators. The cooperative nature of the energy absorption system allows damping even during short cycle times by the armature assembly.

Abstract: A control valve and a fuel injection valve provided with same should be produced, in which it is possible to switch from a first operating state to a second operating state inexpensively and with short switching times, without requiring a hydraulic control line. To this end, a control valve is provided, which has a valve housing, a pressure chamber filled with electrorheological fluid, a displacing element that can slide in the valve housing and protrudes into the pressure chamber, and two electrodes that can apply an electrical field to the electrorheological fluid.

Abstract: The present invention is directed for use in a valve assembly including a housing having an axis and defining an interior, with fluid provided in the housing and substantially filling the housing interior, a valve stem disposed in the housing interior and a piston attached to the valve stem, wherein the piston and valve stem are moveable along the housing axis within the housing interior between first and second positions. The present invention includes a valve actuation control device disposed in the housing interior, the valve actuation control device allowing the fluid to freely flow from one side of the piston to the other side during at least a portion of the piston's movement between the first and second positions.

Abstract: A solenoid plunger (36) is disposed for reciprocation in a plunger pocket that is formed by the stationary parts of a solenoid-type actuator (10). A flexible diaphragm (22) closes the plunger pocket's open mouth and is deformed by movement of a plunger (36) between an open position, in which it is displaced from a valve seat (20), and a closed position, in which it is seated on the valve seat and thereby prevents flow from a valve inlet (16) to a valve outlet (18). The diaphragm thereby isolates the plunger from the fluid thereby being controlled, but a separate, incompressible fluid fills the chamber in which the plunger reciprocates. A through-plunger passage (44, 56) provides a low-flow-resistance path for the incompressible fluid to flow into and out of the portion (52) of the plunger chamber behind the plunger as the plunger moves. This reduces actuation time and thus the energy required for an actuation.

Abstract: A metering faucet includes a housing and a faucet metering cartridge positioned within the housing and having an outwardly extending faucet stem which is movable along a stem axis. There is a cartridge cap which is positioned within the housing and has a portion extending over and in contact with the cartridge stem to provide an inward force thereon. A handle is pivotally mounted to the housing on one side of the stem axis, with the handle having a portion which extends through a housing opening to contact the cartridge cap. Upon pivotal movement of the handle, an inward force is applied on the cartridge stem. The handle has a force applying area which extends a substantial distance from the pivotal mounting of the handle and terminates at the diametrical opposite side of the pivotal mounting of the handle.

Abstract: An actuator includes a valve spindle, for adjustment of an opening position for a valve and a drive piece for the valve spindle. The drive piece is connected to the valve spindle, by a storage device, which may be pre-tensioned to a particular pre-tensioned value during a pretension process, in such a manner that, with a pre-tensioned storage device the opening position can be set without altering the value of the pre-tensioning. The actuator is particularly suitable for a valve on a steam turbine or a gas turbine. As an example, the actuator may be a hydraulic damping unit, integrated in a damping piston. The damping unit permits a reliable end-travel damping for the valve, in particular in the case of rapid closure.

Abstract: A reservoir is provided for a hydraulic dampening chamber at the end of a spool valve with a snap on cap having a labyrinth or baffled fluid entry passage formed in the closed end of the cap.

Abstract: A motion control for electromagnetic valves including a follower connected with a valve for reciprocating motion, and a restraint operable on the follower to slow the valve motion and reduce the force of engagement of the valve with the valve seat and the stop. The restraint may include one of hydraulic and mechanical motion constraining devices. A hydraulic restraint device includes a hydraulic piston reciprocable within a fluid-filled reservoir having first and second chambers connected by a bypass passage and a flow tube. Fluid flow through the bypass passage and flow tube is regulated by the position of the piston relative to the bypass passage such that valve motion is slowed when fluid flow is restricted. A mechanical restraint device includes a pin and track assembly operative to develop rotational motion of the valve for slowing the valve motion.

Abstract: A pressure relief valve for releasing pressure from a system, which pressure relief valve typically includes a valve housing provided on a pressure relief conduit which receives pressure from the system. A valve opening establishes communication between the valve housing and the pressure relief conduit, and a substantially arcuate valve body is pivotally mounted in the valve housing for sealingly and slidably engaging the valve opening. Accordingly, the valve body is capable of pivoting between a first position to close the pressure relief conduit and a second position to open the pressure relief conduit as the valve body slidably traverses the valve opening. A bias mechanism biases the valve body in the closed position in such a manner that the valve body pivots from the closed position to the open position against the bias mechanism and opens the pressure relief conduit, responsive to a threshold pressure of the pressurized fluid impinging against the valve body in the pressure relief conduit.

Abstract: An electromagnetic actuator 10 for opening and closing a cylinder valve 14. The actuator includes an opening coil 20, a closing coil 22, a magnetic armature 26 which is disposed between coils 20, 22 and which is fixedly attached to the stem or shaft portion 28 of valve 14, a pair of conventional valve springs 30, 32, and a pair of pneumatic dampers or air cushioning assemblies 34, 36. Pneumatic dampers 34, 36 are effective to selectively decelerate the moving components of the actuator as they approach their respective seats during valve opening and valve closing events, thereby substantially reducing noise and vibration harshness (“NVH”).

Abstract: An electromagnetic actuator 10 for opening and closing a cylinder valve 14. The actuator includes an opening coil 20, a closing coil 22, a magnetic armature 26 which is disposed between coils 20, 22 and which is fixedly attached to the stem or shaft portion 28 of valve 14, a pair of conventional valve springs 30, 32, and a pair of pneumatic dampers or air cushioning assemblies 34, 36. Pneumatic dampers 34, 36 are effective to selectively decelerate the moving components of the actuator as they approach their respective seats during valve opening and valve closing events, thereby substantially reducing noise and vibration harshness (“NVH”).

Abstract: A motion control for electromagnetic valves including a follower connected with a valve for reciprocating motion, and a restraint operable on the follower to slow the valve motion and reduce the force of engagement of the valve with the valve seat and the stop. The restraint may include one of hydraulic and mechanical motion constraining devices. A hydraulic restraint device includes a hydraulic piston reciprocable within a fluid-filled reservoir having first and second chambers connected by a bypass passage and a flow tube. Fluid flow through the bypass passage and flow tube is regulated by the position of the piston relative to the bypass passage such that valve motion is slowed when fluid flow is restricted. A mechanical restraint device includes a pin and track assembly operative to develop rotational motion of the valve for slowing the valve motion.

Abstract: A solenoid operated valve has a moveable armature sealed within an armature guide with a fluid dashpot disposed therein for velocity dampening armature movement as the armature closes an air gap with a stationary pole piece.

Abstract: A balanced fluid pressure regulator of the disclosed embodiment comprises a balancing bellows inside a sensing bellows to minimize the supply pressure effect for improved performance while reducing the size and weight of the regulator in comparison to a conventional regulator. A sensing duct communicates the enclosed space between the bellows with the fluid passage of the regulator downstream from a poppet valve. The cross-sectional area of the fluid passage is reduced in the vicinity of the sensing duct for decreasing the pressure in the enclosed space at high gas flow rates. The valve seat in the regulator is supported so it is free to move during assembly of the regulator to self-align the seat with the poppet valve.

Abstract: A magnetic valve for a fluid-controlled heating and/or cooling installations has a valve housing, an electromagnetically switched valve member which in a first fixing position makes a connection between an inlet conduit and an outlet conduit and in a second switching position blocks the connection, a valve shaft provided with an armature and connected movably to the valve member, the valve shaft having a side which faces the valve member and is provided with a unit for slowing down a speed of the valve shaft upon closure of the valve member, the valve housing and the valve member being arranged so that a flow direction of a fluid around the valve member is opposite to a closing direction of the valve member.

Abstract: A solenoid valve for tank ventilation in motor vehicles, comprising a magnetic yoke with at least one valve opening and with a cooperating spring-loaded valve member for opening and closing the at least one valve opening. The valve element constitutes a magnetic armature of an electromagnet and is disposed between the magnetic yoke of the electromagnet and a hollow, cylindrical magnet core of the electromagnet. A valve seat body which is separate from the magnetic yoke and contains the at least one valve opening is disposed in an axial opening in the magnetic yoke, and on a side remote from the valve member. The valve seat body rests against a housing wall of the solenoid valve by use of a support element made of a damping material.

Abstract: A fluid valve assembly includes a housing, a valve, a rotatable driver received in the housing in operative communication with the valve, and an over-center linkage disposed between the driver and the housing. The housing includes an entrance to permit fluid flow into the housing and an exit to allow fluid flow out of the housing. The valve is disposed between the housing entrance and exit. The valve is configured in an open state to permit fluid flow through the housing and in a closed state to block fluid flow through the housing. Rotation of the driver from a first rotational position toward a second rotational position moves the valve from the closed to the open state, and rotation of the driver from the second rotational position to a third rotational position permits the valve to return to a closed state. The over-center linkage biases the driver to either the first or third rotational position.

Abstract: The present invention relates to a self-closing water-saving device for a faucet which enables a user only not to use the both hands for constant times by holding up a lever in using water but also quickly select the lever operation of the faucet water opening or closing. And the present is minimized for a simple installation. The self-closing water-saving device which an end an end mounted to the faucet for controlling hot and cold water amount by connecting to a main pipe, and the other end for spouting water, the self-closing water-saving device comprises a lever for opening a water-path path when rotating the lever and closing after a constant time by an elastic force of an elastic member and oil flowing or friction; a water-saving means for closing the water-path when rotating the lever to the other side in the condition of opening the water-path; and a faucet-connecting member for connecting the water-saving means to the faucet.

Abstract: A valve including a cylindrical bore having a circular seat at one end thereof, a valve member that is movable in the axial direction of the seat, and control means connected to the valve member, the valve member including a first portion which serves as a closure element, and a second portion which is engaged in the bore and which is shaped to regulate the flow of the fluid at a desired rate depending on the axial position of the valve member, the second portion of the valve member is detached from the first portion and has a cylindrical outside surface of diameter such that it is in sliding contact with the cylindrical surface of the bore; at least one recess is formed in the cylindrical outside surface of the second portion of the valve member so as to define a passage having a predefined shape, and means is provided for permanently holding the two portions of the valve member in mutual contact so that they are displaced axially simultaneously under the action of the control means.

Abstract: A valve for controlling liquids for its actuation is provided with a liquid-filled coupling chamber, which is disposed between a step-up piston, actuatable by a piezoelectric actuator, and a piston that actuates a valve member. To compensate for leakage in the coupling chamber that is at high pressure, a filling valve is provided. The filling valve is disposed between the step-up piston and the piezoelectric actuator. Upon each return stroke of the piezoelectric actuator, the step-up piston follows the piezoelectric actuator with a time lag, so that the filling valve opens briefly and allows filling of the coupling chamber. The valves intended for use in fuel injection systems for internal combustion engines of motor vehicles.

Abstract: An emergency pressure relief valve has a housing fluidly connected to a pressurized system line carrying a system fluid. The housing carries a piston and a valve member which move within the housing between a closed position and an open position. The piston defines an upper chamber and a lower chamber within the housing. A control fluid is supplied to the upper chamber, and the pressure of the control fluid exerts a biasing force to a first side of the piston. The biasing force holds the valve member and piston in a closed position when the pressure of the system fluid is at an acceptable level. As the pressure of the system fluid rises above the acceptable level, the valve member moves to an open position. While the piston moves from the closed position to the open position, a delay fluid is injected into the lower chamber. As the delay fluid is expelled from the chamber, it delays a return of the piston and valve member to the closed position.

Abstract: A pressure release valve for a steam peeler for potatoes has a differential piston assembly including a piston which is movable between an open position and a closed position under steam control, and a fixed piston element which is received in a secondary cylinder within the main piston for defining a chamber that progressively reduces in volume as the main piston moves towards its open position. The chamber receives a cushioning fluid for decelerating the piston as it moves towards the open position.

Abstract: A hydraulically actuated fuel injector comprises a valve body and a stepped valve member. The valve body has a wide bore portion and a narrow bore portion. The stepped valve member has a wide member section and a narrow member section. The wide member section is slidably disposed in the wide bore portion and defines a first diametrical clearance therebetween. The narrow member section and the wide bore portion define a damping chamber therebetween that is wider than the first diametrical clearance. The stepped valve member is slidable between a first position at which the damping chamber is substantially fluidly open to a low pressure hydraulic fluid reservoir, and a second position at which a fractional portion of the narrow member section is slidably disposed within a portion of the narrow bore portion defining a second diametrical clearance therebetween that is less wide than the damping chamber and substantially restricts fluid communication between the damping chamber and the reservoir.

Abstract: An electromagnetic actuator 10 is provided and includes an upper electromagnet 12, a lower electromagnet 14 spaced from the upper electromagnet and an armature 16 mounted for movement between the upper and lower electromagnets. Shaft structure 20 is operatively associated with the armature for movement therewith. A gas exchange valve 30 is operated by the armature. At least one bushing 24 supports the shaft structure. A metering valve 38 and port structure 60 are provided in the actuator and are constructed and arranged to communicate hydraulic fluid from a source thereof with the at least one bushing and with the armature to cool the armature. The metering valve is preferably associated with a hydraulic lash adjuster 40 which is constructed and arranged to provide hydraulic fluid to the lash adjuster only when the gas exchange valve is in a closed position.

Abstract: A method and apparatus is disclosed for building a tool string uphole of any desired length prior to lowering that tool string downhole into a wellbore for the purpose of performing wellbore operations downhole during a single trip into the wellbore. The apparatus includes a valve disposed between an upper section and a lower section of the wellbore and adapted to open and to close, the upper section of the wellbore being isolated from the lower section of the wellbore when the valve is closed. The tool string of any desired length is built in the upper section of the wellbore when the valve is closed and the upper section of the wellbore is isolated from the lower section of the wellbore. The apparatus also includes a mandrel and piston, the valve being initially disposed in an open position and adapted to be changed from the open position to a closed position when the mandrel is shifted from one position to another position.

Abstract: The invention pertains to a regulator for regulating a medium flow to at least one hydrostatic or aerostatic pocket of a bearing, a nut for threaded spindles or a guidance from a medium supply, with pressure chambers that are separated by a variable flow resistance control element that can be moved against the force of a spring element. A first pressure chamber is directly connected to the medium supply, a second pressure chamber that is charged with a lower pressure level is connected to the medium supply via a first flow resistance, and a third pressure chamber is charged with a third pressure level that corresponds to the pressure in the hydrostatic or aerostatic pocket.

Abstract: A damper for a hydraulic pilot valve having a valve body in which a plurality of pressure reducing valves, a rotational shaft, an operation member attached to the rotational shaft and a handling member rotating the rotational shaft are provided. The pressure reducing valves are operated through the operation member by rotating the rotational shaft by the handling member, and the damper is disposed in the valve body and is adapted to apply an operational resistance to the operation member due to a viscous resistance of a fluid having high viscosity.

Abstract: An apparatus for time dependent control of a regeneration time of an air-dryer. The control apparatus has a shutoff valve, which is disposed in a line between a tank that furnishes regeneration air and an air dryer that can be regenerated by the countercurrent method. For the regeneration of the air dryer, the shutoff valve is switched into an open position by a control pressure and is returned to its closing position by spring force counter to a pneumatic delay device which concludes the regeneration. In the pneumatic delay device, air is displaced through a throttle restriction in the form of a permeable membrane, for instance of porous polytetrafluoroethylene. The apparatus for time-dependent control of the regeneration time of an air dryer is intended in particular for compressed air systems of motor vehicles.

Abstract: A damper for a hydraulic pilot valve having a valve body in which a plurality of pressure reducing valves, a rotational shaft, an operation member attached to the rotational shaft and a handling member rotating the rotational shaft are provided. The pressure reducing valves are operated through the operation member, by rotating the rotational shaft by the handling member, and the damper is disposed in the valve body and is adapted to apply an operational resistance to the operation member due to a viscous resistance of a fluid having high viscosity.

Abstract: A fuel injection device which has a solenoid valve whose valve member is provided with a solenoid plunger on an end, whose operational movement is damped by means of a damping device which is comprised of a damping chamber defined by the solenoid plunger, and the chamber is discharged via a throttle into a discharge chamber.

Abstract: A valve assembly for controlling the delivery and exhaustion of pressurized air to and from an air spring. The valve assembly comprises a body having a bore and a port in communication with the bore. The port is adapted to receive an air connection with an air spring. Actuator shaft having a first end and a second end, is disposed coaxially in the valve bore for reciprocal movement between actuating and rest positions, and is biased toward the rest position. A valve block fixes within the bore and has an internal end and an external end. A stop chamber is disposed between the external end and the internal end. A stop member mounts on the actuator shaft within the stop chamber. Actuator shaft movement relative to the valve body is limited to the distance the stop moves within the stop chamber. The valve bore is filled with an incompressible fluid and the actuator has a piston disposed within the valve bore in order to dampen movement of the actuator shaft to provide a time delay in actuating the valve.

Abstract: The invention attenuates higher frequency vibrations or oscillations which can result in wear and/or less than optimal performance of a valve positioner. The invention provides a low pass mechanical filter which can be realized, for example, in a dash pot like damper device. The damper includes a pair of diaphragms associated with a pair of chambers, which are in communication with one another by an orifice. The chambers associated with each diaphragm are filled with oil or a hydraulic fluid such that the rate of relative motion (for example between a summing beam of the positioner and the location at which a signal force is applied) is controlled by flow of oil through the orifice.

Abstract: A valve assembly for controlling delivery and exhaust of pressurized air to and from an air spring. The valve assembly comprises a body having a pair of valve bores with a coaxially open end, and a port in communication with the valve bore. The port is adapted to receive an air connection with an air spring. An actuator shaft, having a first end and a second end, is disposed coaxially in the valve bore for reciprocal movement between an actuating position and a rest position, and is biased toward the rest position. A valve block fixes within the valve bore and has an internal end and an external end. A coaxial bore extends from the internal end to the external end and slidably receives the actuator shaft second end. A stop chamber is disposed between the external end and the internal end. The valve block has a seat on the external end at the coaxial bore. An air passage communicates with the port and the coaxial bore.

Abstract: A device contains a super absorbent hydrophilic polymer in combination with a compatible liquid to form a thick, viscous gel-like colloidal fluid to provide high durability, low cost, and ready manufacture in footwear, medical applications, including surgical padding, flotation sleeping devices, and other applications for the dissipation of shock or load over time and/or an area.

Abstract: A metering valve includes a valve body with an inlet passage and an outlet passage defined therein, and a movable stem member disposed between the inlet passage and outlet passage. An inner sleeve member is configured within the valve body and has an inner diameter surface at least partially defining a pressure chamber within a fluid-tight meter chamber, the stem member being movable through the chamber. A piston assembly is disposed within the pressure chamber and is configured with the stem member to move therewith. The piston assembly is movable to an open mode upon actuation of the stem member and automatically moves from the open mode to the closed mode upon release of the stem member. The piston assembly includes a sealing device which engages with the inner sleeve member inner diameter surface during movement of the piston assembly to the closed mode.

Abstract: A vacuum valve has a valve stem with a magnetic drive for moving the valve stem in the opening direction of the valve. A piston configuration is connected to the valve stem and is enclosed within a double-cylinder configuration. Overflow or inflow/outflow lines connected between the two chambers of the double-cylinder configuration, contain flow conductance value setting elements such as valves or filters, for setting a damping effect on movement of the piston configuration, thus damping movement of the valve stem.

Abstract: A single-lever mixer valve for liquids, for example hot and cold tap water. The valve comprises a housing, which is provided with an inlet for each of said liquids and a common outlet. A lever is provided for controlling the amount and the temperature of the liquid flowing out through the outlet. The lever is connected to an actuator in the valve housing that cooperates with a valve member. The lever includes an adjustable spring loaded stop to provide a temporary increase of fluid flow when pressed against a stop surface. The actuator is provided with a built-in closing damper, including at least one sealed chamber and a movable piston for forcing an amount of fluid from the chamber via a throttling member when the lever is closed. When the fluid pressure in the chamber exceeds a certain value, the throttling member is elastically deformed and pressed progressively against a sealing face in the actuator for reduction of hydraulic shock waves related to rapid closing of the mixer valve.

Abstract: An actuator and valve assembly is disclosed which comprises an electrically-energizable actuator assembly and a device for communicating, collecting and draining damping fluid with respect to at least one cavity of the actuator assembly. If too much damping fluid remains in the actuator and valve assembly after shutdown, that damping fluid may cool off and cause slow response of the actuator and valve assembly when it is re-energized. The end result is that quick starting and/or operation of the actuator and valve assembly may be hindered, particularly under cold operating conditions. The communicating, collecting and draining means permits at least a portion of the hot damping fluid to automatically drain from the cavity after the actuator and valve assembly has been shutdown.

Abstract: A shock absorbing device is shown having a cartridge attached to a valve, and an actuator. The valve houses a stem which is activated by the actuator to move between an open and a closed position. The actuator includes a cam having a cam surface and a roller which rides along at least a portion of the cam surface. A yoke, which is moved by the roller, is interconnected to a plunger which is attached to the stem. The cartridge includes an upper piston, a lower piston, and a plug having a channel therethrough, positioned between the pistons, the upper piston being spring biased towards the plug. The pistons are positioned in relation to the plug and cartridge housing so as to form an upper and lower reservoir, which are substantially filled with fluid, preferably ethylene glycol. The lower piston is capable of being in contact with the actuator yoke.

Abstract: A gas pressure regulator and a diaphragm assembly therefor and a method of assembling the regulator utilizing the diaphragm assembly which enable the precise alignment of a diaphragm and a valve carried thereby with respect to a valve seat for improved regulator performance with predictable relatively low hysteresis and creep, and improved reproducibility in a regulator of relatively small size.

Abstract: A fluid valve assembly includes a housing, a valve, a rotatable driver received in the housing in operative communication with the valve, and an over-center linkage disposed between the driver and the housing. The housing includes an entrance to permit fluid flow into the housing and an exit to allow fluid flow out of the housing. The valve is disposed between the housing entrance and exit. The valve is configured in an open state to permit fluid flow through the housing and in a closed state to block fluid flow through the housing. Rotation of the driver from a first rotational position toward a second rotational position moves the valve from the closed to the open state, and rotation of the driver from the second rotational position to a third rotational position permits the valve to return to a closed state. The over-center linkage biases the driver to either the first or third rotational position.