Abstract: An illustrative valve is disclosed that includes a valve body, a valve seat disposed within the valve body that has a first curved sealing surface and a valve member having a second curved sealing surface that is adapted to sealingly engage the first curved sealing surface, wherein the first and second curved sealing surfaces are opposed curved sealing surfaces.

Abstract: A refrigerant system includes a compressor with a discharge valve that temporarily restricts the compressor's outflow at startup so that the discharge pressure can quickly rise to force lubricant back to the compressor. The discharge valve also helps prevent an axial face of a rotor of a screw compressor from rubbing against a bearing housing axial face of the compressor's housing. When the system turns off under certain low ambient air temperature conditions, the valve closes to help prevent the system's evaporator from freezing up. The discharge valve includes a novel arrangement of a piston, a valve stem extending from the piston, and a valve plug pivotally attached to the valve stem. The pivotal connection ensures a positive seal between the valve plug and a valve seat. A somewhat restricted fluid passageway between the valve's discharge chamber and piston chamber helps prevent the valve from chattering as the valve opens.

Abstract: A pressure control valve assembly including a valve body with a valving cavity, a metal insert, a member and ball, a plastic internal ball guide, and a plug. The metal insert, which is received within the valving cavity, includes an exhaust port, a pressure control port, a supply port, and a plug-receiving end. The plastic internal ball guide is included within a portion of the metal insert. The member extends within a portion of the insert and is movable with respect to the exhaust port, the member moving a ball with respect to a supply port. In an embodiment, a plug is received within the plug-receiving end of the insert. A method for making a valve body for a valve assembly is also disclosed.

Abstract: A conical rotary valve for chromatographic applications is provided, including a valve stator, a valve rotor, a drive adaptor and a pair of stoppers each mounted to the stator. The drive adaptor is rotatable and coupled to the valve rotor for transmitting a rotating force thereto. The drive adaptor has a body and a pair of radial arms projecting from the body radially outward from the axis of rotation on opposite sides thereof. Each of the pair of radial arms is movable along a respective arcuate travelling course with respect to the stator. The stoppers are each positioned to obstruct one of the radial arms at an end of the corresponding travelling course. The stoppers are positioned to simultaneously engage the radial arms, thereby balancing the reaction forces created within the valve when the radial arms reach the ends of their travelling courses.

Abstract: A valve system that comprises a housing having an opening for receiving or ejecting a fluid, a poppet that controls a flow of the fluid through the opening, an elastoguide that drives the poppet to a closed position, and an adaptor that receives and holds the poppet and the elastoguide.

Abstract: An assembly for culturing cells includes a housing defining a reservoir for containing cell culture media and an opening in fluid communication with the reservoir. The cell culture assembly further includes a filter valve assembly configured to sealingly engage the opening. The filter valve assembly includes a flexible membrane, a contiguous side wall, an end wall, and a microbial filter. The end wall has an opening and extends across one end of the side wall to form a major cavity within the side wall and the end wall. The flexible membrane has a slit spanning the membrane and is disposable within the major cavity such that the membrane sealingly divides the major cavity into (i) a chamber formed between the end wall and the membrane and (ii) a minor cavity formed by the membrane and a portion of the side wall. The minor cavity is in fluid communication with the reservoir.

Abstract: A direct drive servovalve (10) includes redundant drive motors (14) coupled to a common valve drive shaft (22,24) by a connection device (26). The connection device (26) is configured to allow operation of the servovalve (10) in the case where one or more of the drive motors (14) becomes inoperable, such as caused by jamming or binding of a rotor associated with the drive motor. By use of the connection device (26), in the event that one of the drive motors (14) was to become jammed, the remaining operable motors (14) can continue to stroke or cause translation of a valve member (18) of the direct drive servovalve (10) to allow its continued operation.

Abstract: The invention relates to an upper or lower sealing valve arrangement for a shaft furnace charging installation. The arrangement comprises a shutter-actuating device (20; 120; 220; 320; 420) for moving a shutter (10) between a closed position in sealing contact with a valve seat (12) and an open position remote from the valve seat. The shutter-actuating device is of the dual-motion type, more specifically of the type configured to confer to the shutter a superposition of two rotations about substantially parallel axes (29; 39). It has a primary tilting arm (22) on a first tilting shaft (24) that defines the first axis (29) and is equipped with bearings (26) that support the primary tilting arm (22). A secondary tilting arm (32) carries the shutter (10) is connected to a second tilting shaft (34) that defines the second substantially parallel axis (39) and has bearings that support the secondary tilting arm (32) on the primary tilting arm (32).

Abstract: An actuating device (4) for actuating valves, having a spindle (5), wherein the actuating device is designed as a hand wheel (4) with a locking element (32) and with an electric feedback device (6), characterized in that the locking element (32) is formed in one piece and is arranged integrally in the hand wheel (4).

Abstract: A device for operating a valve of a compressed-gas tank may include an engagement collar and operating handles attached to the collar. Notches may extend through a wall of the collar. The notches may be configured to engage with handle projections of the valve of the tank.

Abstract: A slit valve assembly is configured for attachment to a vacuum chamber module to seal a slot opening in a wall of the module in a closed position and to provide access through the slot opening in an open position. The valve assembly includes a rotatable shaft driven by a rotary actuator between an open rotational position and a closed rotational position. An elongated seal plate seals against the module wall over the slot opening in the closed rotational position of the shaft. At least one arm member connects the seal plate with the shaft. The arm member rotates with the shaft and is pivotally attached to the seal plate. The seal plate is biased to an articulated position relative to the arm member.

Abstract: A braking system for a combined tractor-trailer assembly wherein a leading trailer is coupled to a towing tractor and a trailing trailer is coupled to the leading trailer. All of the wheels of the trailers are provided with brakes which may be applied and released in response to the operation of a brake control pedal operated by a driver in the tractor. The brakes also may be applied to the trailing trailer whenever the latter is parked. The brakes of the trailing trailer normally are maintained in applied condition by a spring assisted mechanism when such trailer is parked. Such mechanism normally is disabled by pressurized fluid when the trailer is in service and the pressured fluid is accessible via a valve which simultaneously enables the parking brakes and service brakes simultaneously to be coupled to and uncoupled from the pressure fluid system.

Abstract: A hydraulic valve coupling has an interlock mechanism that includes at least one blocking member located within an interlock passage of a body portion of the valve coupling. The interlock passage has a first end opening to the valve shaft and a second end opening to an interface groove of the valve coupling. The at least one blocking member can be retracted within the interlock passage such that the valve coupling can be rotated and disengaged from a mating coupling. When the valve is in the open position, the at least one blocking member is positioned within the interlock passage such that it contacts the mating coupling and prevents rotation of the valve coupling relative to the mating coupling. The second end of the at least one blocking member can be shaped such that it is retracted as a result of contact with the mating coupling and without the assistance of a biasing mechanism.

Abstract: A fluid handling system includes a valve assembly within a needle that is movable from a closed state to an open state against a bias while engaging and moving a valve stem of a fluid supply from a closed state to an open state.

Abstract: The pushbutton mechanism comprises a lower part (1) and a cover (2) which are connected to each other and together constitute a house; a push bar (3) being in contact with the cover (2) and passing through an opening (5) in the lower part (1) and protruding out from that; an activation surface being on the cover (2); a biasing spring (4) between the cover (2) and the lower part (1) providing mechanic bias at the initial position of the pushbutton mechanism; and the cover (2) is able to move from its initial position when approaching relatively to the lower part (1) in response to an external pressing force. The cover (2) is formed as a single piece and is attached to the lower part (1) so that it is movable to an angled position compared to its initial position, the angled position of the cover (2) and thus that part of the displaced push bar (3) protruding out of the lower part (1) is depending on the point of exertion the pressing force within the activation surface.

Abstract: A switching device of a multifunctional shower head is integrated into the cavity of the shower head, which mainly includes a switching button, a radius bar, a swing arm, a coupled gear, a shaft for the coupled gear, a division gear, and a shaft for the division gear; wherein one end of said radius bar extends out of the shower head via a through-hole to fix with a switching button, and the end has a pivot pin; one end of said swing arm is fixed onto the shaft of the coupled gear, while a slot guide is disposed on the other end for connecting with said pivot pin of said radius bar; said gearing coupled and division gears are located in the cavity of the shower head via their shaft respectively; said division gear closing on the outlet of the main body has several dividing holes coordinating to the outlet of the main body.

Abstract: One example embodiment includes a disk actuator. The disk actuator includes a disk and a shaft, where the shaft is connected to the disk such that rotation of the disk causes rotation of the shaft. The disk actuator also includes a plug, where the plug is connected to the shaft such that rotation of the shaft causes rotation of the plug. The plug includes a channel, wherein the channel is configured to regulate the flow of air into a carburetor.

Abstract: A valve operating system that includes a drive shaft, a drive lever that is fixedly provided thereon and can pivot in a direction of movement of a valve body, a follower arm that is fixedly provided on the valve body, a link, a first connecting shaft that connects one end of the link and the drive lever, and a second connecting shaft that connects the other end of the link and the follower arm; in response to a movement of the valve body from a first position to a second position by pivoting of the drive lever, a center of the first connecting shaft approaches from one side a straight line connecting two centers of the drive shaft and the second connecting shaft, and after the valve body reaches the second position, further pivoting of the drive lever is carried out through a predetermined angle so that the center of the first connecting shaft moves to the other side of a dead point on the straight line.

Abstract: Valve controllers and methods of their use are described. Valve controllers of the type described herein can be used to operate valves that are out of manual reach by the operator. One embodiment of a valve controller includes proximal and distal controller heads connected to each other via a hollow elongate shaft. Each of the proximal and distal controller heads includes a rotatable pulley wheel that is connected to a valve control engagement member for engaging a handle of a valve operable to shift the valve from a first position to a second position. The rotation of the proximal and distal pulley wheels, and thereby the proximal and distal engagement members, is coupled via a cord that runs through the hollow elongate shaft and around a circumferential portion of each pulley wheel.

Abstract: A safety valve is positioned in supply plumbing that supplies a fluid medium such as natural gas to a point of use structure such as a home. A mechanical actuator is provided remote from the safety valve but mechanically connected to the safety valve. This allows the actuator to be positioned, for example, directly on the point of use structure, avoiding the need for separate bracing for the valve. The valve can be provided with a tee fitting or can be a separate gate valve. The mechanical actuator can be actuated by seismic disturbance, manually, or by activation by remote sensor or home security system.

Abstract: A gate valve actuator including a stem that is movable linearly in an actuator housing connectable to the gate valve. The stem acts on the gate valve to shift the gate valve between open and closed positions, respectively. The stem is driven by a motor in a first direction into a steady state operation position. In the position the stem is biased in a second opposite direction towards a shutdown position by a spring member acting on the stem. A trigger mechanism is arranged for holding the spring member in a compressed state. The trigger mechanism includes an electrically controllable trigger that is arranged for release of the spring member in result of de-energizing the electrically controlled trigger. A method for shifting a gate valve between a steady state operation mode and a shutdown mode utilizing the gate valve actuator.

Abstract: A device and method for providing portable biological testing capabilities free from biological contamination from an environment outside the device are provided. The device includes a portable housing. The device further includes a volume surrounded by the housing and sealed against passage of biological materials between the volume and the environment outside the device. The device further includes a culture medium within the volume. The device further includes one or more ports configured to provide access to the volume while avoiding biological contamination of the volume. The device further includes a valve in fluidic communication with the volume and the environment. The valve has an open state in which the valve allows gas to flow from within the volume to the environment outside the device and a closed state in which the valve inhibits gas from flowing between the volume and the environment.

Abstract: A power-assisted mechanism having a simple structure which can perform a power-assisted operation can be achieved in a power-assisted on/off valve including a valve stem which opens and closes a flow passage, an operational member which is positioned on an axis of the valve stem and is relatively movable with respect to the valve stem, and a power-assisted mechanism which reduces the speed and power-assists the movement of the operational member, and transfers the movement of the operational member to the stern valve.

Abstract: A pluggable seat includes, a first portion, positionable within a tubular, that is receptive to a runnable member seatable thereagainst, a second portion positioned downstream of the first portion, having a radial dimension smaller than a smallest radial dimension of the first portion, and a profile disposed at the second portion configured to increase resistance to extrusion of a runnable member past the pluggable seat in comparison to the same pluggable seat without the profile.

Abstract: A port assembly includes a valve housing with an inlet opening, a valve disposed in the valve housing to control access through the inlet opening, and a base having an outlet opening that is initially occluded by a membrane. A pivot is disposed within the base and has a cutting surface disposed within the base, the cutting surface rupturing the membrane at least in part as the pivot is pivoted about an axis between first and second positions. The port assembly may be used in a fluid container that includes a receptacle for retaining a fluid, and at least one conduit in communication with the receptacle. The at least one conduit is defined, at least in part, by the port assembly.

Abstract: The system and method of the present application is a microfluidic array system for biological, chemical and biochemical assessments including a microfluidic chip for reaction assays, wherein the microfluidic chip includes a control layer and a fluidic layer, wherein the control layer is pressurized through pneumatic or hydraulic means in order to control the flow of the reagents in the fluidic layer. The system and method of the present application further includes a method of fabricating such a microfluidic chip, and further a method for operating the same. Lastly, the system and method of the present application further includes a system for operating and analyzing the microfluidic array including a pressure source, a fluidic source, a biochip reader, and a processor configured to control the same.

Abstract: A micro-fluidic valve actuator assembly is provided for controlling a multi-position micro-fluidic valve device for switching between a plurality of discrete fluid distribution positions. The actuator assembly includes a housing having an exterior wall and an interior wall defining an interior through-chamber. A drive assembly is rotatably positioned within the chamber, having a drive axis of rotation positioned substantially co-axial with the chamber axis. A removable, stand alone, self contained encoder assembly is positioned within the actuator housing. The encoder assembly includes an encoder shaft rotatably mounted to a support structure for rotation about an encoder shaft axis. The encoder assembly further includes an encoder wheel mounted to the encoder shaft for rotation about the encoder shaft axis, and an encoder module mounted to the support structure.

Abstract: A refrigerant system includes a compressor with a discharge valve that temporarily restricts the compressor's outflow at startup so that the discharge pressure can quickly rise to force lubricant back to the compressor. The discharge valve also helps prevent an axial face of a rotor of a screw compressor from rubbing against a bearing housing axial face of the compressor's housing. When the system turns off under certain low ambient air temperature conditions, the valve closes to help prevent the system's evaporator from freezing up. The discharge valve includes a novel arrangement of a piston, a valve stem extending from the piston, and a valve plug pivotally attached to the valve stem. The pivotal connection ensures a positive seal between the valve plug and a valve seat. A somewhat restricted fluid passageway between the valve's discharge chamber and piston chamber helps prevent the valve from chattering as the valve opens.

Abstract: A system for delivering a cooking medium of a cooking apparatus includes a cooking medium tank for storing the cooking medium and a rotary valve including a rotary inlet configured to be in fluid communication with the cooking medium tank. The rotary outlet further includes a plurality of rotary outlets including a first rotary outlet in fluid communication with a first cooking vessel and a second rotary outlet in fluid communication with a second cooking vessel. Moreover, the rotary valve is configured to selectively place the rotary inlet in fluid communication with one of the plurality of rotary outlets. In other embodiments, the system further includes a motor operatively connected to the rotary valve and configured to operate the rotary valve to select one of the plurality of rotary outlets.

Abstract: Temporary relief from urine retention often accompanying prostate gland enlargement can be had by catheterization. Conventional catheters extend through the sensitive tip of the penis, causing pain, and preventing sexual relations. This invention places a valve inside the urethra that has an attached, proximal catheter which passes through the prostate into the bladder. Such valve can be opened at will by applying finger pressure against the distal valve tip and pushing upward toward the prostate. The latter tip can be felt inside the urethra, near the juncture between the penis and the scrotum. With the valve in the open position, the bladder can be nearly fully voided, regardless of the degree of enlargement of the prostate. This efficient and easy drainage of the bladder can eliminate the need to endure the painful surgical enlargement of the prostate duct—which can cause an inability to father children, normally, and may cause incontinence.

Abstract: A valve actuator device (1) of the type adapted to convert a reciprocating rectilinear motion into a reciprocating angular motion and vice versa in valve actuators, of the type including a sleeve (2) adapted to be keyed to a corresponding rotation driving shaft, a slider (4) sliding along linear guides (5), one or more forks (3) integral with the sleeve for holding an element (6) extending from the slider (4) in the gap (3b) between its prongs, to generate a translational motion upon rotation of the sleeve and vice versa. Three or more equally spaced rods (5) are provided for guiding the slider, and are arranged to define the vertices of a regular polygon with the center of application of the stem (11) or the center of gravity of the slider, to prevent any torque or rotation moment from building up on the slider as it slides on the rods.

Abstract: Disclosed are a method and a ball valve structure which provide for an improved seal in a trunnion mounted, double piston ball valve, which is especially useful in applications requiring a seal against high pressures, such as in the oil, gas and chemical process industries. Higher pressures on an inlet side of the valve are used, while the valve moves toward and is maintained in a valve closed position, to create movement of a ball element of the valve so as to bias the ball element against both piston seat elements (or rings) used to create the seals. This movement of the ball element thereby effectively uses such upstream pressure to create and enhance a seal between the ball element and both piston seat elements while in the valve closed position.

Abstract: A gas appliance including a frame and a control knob assembly connected to the frame, the control knob assembly including a gas valve with a valve stem, a control knob attached to the valve stem, and a valve restraint. The valve restraint is substantially fixed relative to the frame and longitudinally disposed substantially between the gas valve and control knob, and is configured to limit lateral movement of the valve stem.

Abstract: An externally mounted mechanical device for mechanically closing a pressurized tank or cylinder valve, such as a grill tank, is provided. The device comprises a securing mechanism, a rotatable mechanism having a handle recess to receive a handle of pressurized tank or cylinder valve, and a torsional spring, wherein the torsional spring is configured to store potential torsional force and then release the torsional force by way of a timed release mechanism. The mechanical device comprises a securing device for securing the mechanical device to a tank or cylinder. Torsional force may be stored in torsional spring by way of a ratchet and pawl that also is configured to release the stored torsional force by way of a timed release.

Abstract: The invention relates to an actively controlled valve (1) having a housing (6) and comprising a displaceably supported valve plate (4) having aperture openings (4a) and a counter plate (2) disposed in a fixed manner relative to the housing (6) and having aperture openings (2a), wherein the valve plate (4) is slidably supported relative to the counter plate (2), such that the penetration openings (2a, 4a) form an open or closed aperture (24), and comprising a drive device (8) driving the valve plate (4), wherein the valve plate (4) is connected to the drive device (8) by means of a drive spring (7), and an actuatable clamping device (10) is provided for fixing the location of the valve plate (4).

Abstract: A method is provided for operating a directly actuated valve that comprises a strain-type actuator to actuate a valve member to travel between a closed position and an open position, the method comprising transmitting displacements from the strain-type actuator to the valve member, maintaining a compressive stress on the actuator that is greater than a predetermined minimum stress by applying a pre-load compressive stress and limiting to less than predetermined limits at least one of: (a) acceleration and deceleration of the valve member when moving between open positions and the closed position; and (b) velocity of said valve member immediately before contacting the valve seat.

Abstract: An air operated double diaphragm pump comprising an air valve mechanism. The air valve mechanism may comprise a single valve system that replaces the two valve system found in conventional air operated double diaphragm pumps. The position of the valve may be determined by the diaphragm motion of the pump up to a stall position. A spring-loaded mechanical actuation may complete the valve action from the stall position to the final or end of stroke position of the pump.

Abstract: A valve device of a high-pressure tank for a vehicle has a valve box that is attached to the high-pressure tank and that houses a gas inlet opening, a gas outlet opening, a flow path connecting the gas inlet opening, the gas outlet opening and the high-pressure tank, and a valve disposed on the flow path. The gas inlet opening, the gas outlet opening, at least a portion of the flow path, and the valve are provided on a plane that intersects perpendicularly with an axis direction of the high-pressure tank.

Abstract: A switching valve is proposed that switches between at least two different outlets with the aid of a valve closing body and a valve seat. The valve contains an actuating device that can be actuated by the user. The actuating device acts on an advancing device that advances the valve closing body from a stable, discrete position into another stable, discrete position. The advancement can be caused either by the interaction of beveled surfaces or by means of the flow of water.

Abstract: An exhaust gas recirculation valve comprises a drive, at least one rotatable drive element and at least one translationally drivable driven element. The drive element comprises a thread element that is configured to convert rotational motion of the drive element into translation of the driven element. A rotational axis of the drive element is inclined with respect to a translational axis of the driven element.

Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) in which a throttle unit (4, 11) having an adjustable throttle element (11) and a shut-off unit having a shut-off element (4) which blocks the flow channel (3) in a closed position are arranged, the shut-off element (4) being actuatable from the outside by means of a handle (16). The aim of the invention is to simplify the handling of a flow adjustment valve of the aforementioned type. For this purpose, the throttle element (11) can also be actuated by means of the handle (16).

Abstract: A switching unit for pushbutton of kitchen water faucet cooperates with a water faucet body (1), a mandrel (2), a pushbutton mechanism (3), a bubbler (5) and a face covering (6). Two intake pipes (21,22) formed vertically in the middle of the mandrel (2) are communicated with the water inlet of the bubbler (5) and the shower water inlet of the face covering (6) respectively. The pushbutton mechanism (3) is arranged in the sidewall of water faucet body (1) and includes two buttons (32,33) capable of returning to initial state which aim at the two intake pipes (21,22). The valve core assembly (4) includes two valves (41,42), a pressure plate (43), and a return spring (44). The two valves (41,42) extend into the two intake pipes (21,22) of the mandrel (2) respectively, and the return spring (44) is arranged below the valve (41) in the bubble water intake pipe (21).

Abstract: A valve having a housing with at least one entry and at least one exit provided on the outer casing of the housing for a flow medium. The housing has a flow space, in which a drive element is centrally and rotatably supported, the rotational axis thereof running perpendicular to the at least one entry and the at least one exit. Between the drive element and the housing, at least one endless strip is provided parallel to the rotational axis of the drive element, the length thereof extending over the at least one entry and the at least one exit. The drive element is connected to a drive and can guide the at least one endless strip in the flow space along the housing during operation. The valve is used as a throttle element for motor vehicles having diesel engines.

Abstract: Apparatus and method for isolating an annular bore below a tubing hanger body disposed in a wellhead assembly. The hanger body is characterized by at least two annulus flowby passages that are capable of fluid communication with areas outside the hanger body through the central bore of the hanger body. An integral valve piston is disposed within the central bore of the hanger body, and is operable to axially displace within the central bore between a closed and opened position. The displacement of the piston is caused by the alternating introduction of pressurizing fluid into separate actuation chambers. In the closed position, the piston is positioned so that at least one of the flowby passages is sealingly engaged in a manner that prevents fluid flow through the hanger body from outside sources such as an annulus bore located below the hanger body.

Abstract: The invention relates to a compressed-air driven device for opening and closing valves or similar, by using for this purpose a device (1), to be connected to the valve and creating a rotating motion, in which there is a rotated drive wheel (14) with several retracting pins (15). The pins (15) are arranged in collar-like components (13), into which they can retract when they strike an obstacle.

Abstract: An outboard marine engine has vapor vent control apparatus including a fuel inlet in fluid communication with a fuel reservoir of the engine. The fuel inlet is operably attachable to a fuel pin of a fuel connector. When attached, liquid fuel flows to the fuel reservoir and when detached, liquid fuel flow out of the fuel inlet is prevented. A vapor vent passage is configured in fluid communication with the liquid fuel reservoir and an air intake of the engine. A vent pin is disposed in the vapor vent passage. The vent pin moves between a first position upon attaching the fuel connector to the fuel inlet and a second position upon detaching the fuel connector from the fuel inlet. In the first position, the vapor vent passage is open to fuel vapor flow and, when in the second position, the vapor vent passage is closed to fuel vapor flow.

Abstract: A throttling valve assembly has an outer housing that is sealed. An actuator is connected to a pressure balanced shaft that extends into the housing to operate a plurality of linkages that can rotate blades in tandem. With the surrounding housing sealed, the shaft penetrations of the blade support shafts no longer need seals or a purge system to supply process gas during times of reduced pressure in situations with the blades nearly closed. A pressure equalization system has balance passages internal to the housing to allow flow from higher pressure zones to lower pressure zone of the process gas so as to avoid creation of a condition that can draw air into any zones of reduced pressure in the housing.

Abstract: The device includes a spindle rotatably supported perpendicular to a value displacement direction and is made of a first spindle part and a second spindle part. The two parts are provided with outside threads configured in opposite directions to each other. On the first spindle part, a first nut having a complementary inside thread is applied. On the second spindle part, a second nut having a complementary inside thread is applied. The first nut includes a first bearing for the rotatable support of one end of a first connecting rib. The second nut comprises a second bearing for the rotatable support of one end of a second connecting rib. The other end of the first connecting rib and the other end of the second connecting rib are rotatably supported on a third bearing. Parallel to the spindle, on the side thereof facing away from the valve member, a stop is provided for the first nut and for the second nut, the stop surface extends perpendicular to the displacement direction of the valve member.

Abstract: Plungers and plunger assemblies for a diaphragm-sealed valve are provided. Each plunger is adpted to be received in a passage of the valve body and includes a base member and an upper member having a longitudinal play in this passage with respect to the base member. A resilient middle element is provided between the upper and base member. The base member is connected to a plunger actuating mechanism within the valve body. Optionally, the upper member may be self-aligning within the passage. The plunger can be used to compensate for temperature variations experienced by the valve in use.

Abstract: A vacuum container having a vacuum producing means, mounted on a vehicle, a trailer, or skid mounted, with options chosen from an articulating boom, a water jetter system, a liquid pressure dissipating means, a valve actuator, and a drive motor for the valve actuator being either hydraulic, air, or electric powered, a global positioning system to determine and log the position of work, service or hardware, controls and measuring devices and de-chlorinator.