Abstract: A coupling part constituting the male or female part in a quick coupling comprises an inner, longitudinally displaceable unit positioned in an outer part of the coupling part the inner unit being adapted in a deactivated position thereof to confine the media pressure in a first chamber arranged in the outer part of the coupling part and in an actuated position to open or keep open an access for media to a second chamber in the outer part. Pressure-reducing members actuable upon coupling together of the male and female parts and allowing for the coupling even at high media pressures, and including a lead-off channel for media pressure and a shut-off element positioned in the channel, and actuable by the end face of the other coupling part through an actuation member. The actuation member is sealed-off or positioned in the coupling part in order to prevent lead-off media from reaching the end face of the coupling part.

Abstract: A containment valve with two butterfly valves at the juncture of a first port and a second port with the two valves pivoting on a common transverse axis. The ports may be coupled and uncoupled between a coupled mode and an uncoupled mode. In the uncoupled mode one butterfly valve body locks the first port shut and the other butterfly valve body locks the second port shut to isolate the contents of the ports, such as chemical dust. Each butterfly valve body has a circumferentially moveable annular locking ring moveable between a first position and a second position. In one position the locking ring locks the butterfly valve body shut when the ports are in an uncoupled mode. In the other position the locking rings hold the two ports in the coupled mode. A spring biased pin lock prevents inadvertent rotation of the annular locking ring.

Abstract: A valve assembly operable to fill a container with pressurized gas from a source thereof and to vent the cylinder and associated passage means in the valve assembly to atmosphere, the cylinder having a valve with a valve member spring biased to a closed position. The valve assembly has a valve housing within a main chamber, a supply port connectable to a source of pressurized gas, a fill port connectable to a cylinder to be filled, and a vent port communicating with the atmosphere, the supply port, fill port and vent port communicating with the main chamber. A valve body is mounted in the main chamber for movement therein and having a first passage operable in a first position of the valve body to connect the fill port to the vent port, a second passage operable in a second position of the valve body to connect the supply port to the fill port, and a third passage operable in a third position of the valve body to connect the fill port to the vent port.

Abstract: A sealing system for high pressure fluid couplings wherein male and female valved coupling parts are interconnected while under fluid pressure, the sealing system including a pair of diverse characteristic seal rings axially spaced in the direction of relative coupling part movement. The seal ring closest to the pressurized medium is semi-rigid to prevent blow-out from its recess during coupling disconnection and interconnection while the second seal ring is of greater elasticity and sealability to prevent leakage. The axial spacing between the seal rings permits adequate internal support for the second seal prior to the opening of the coupling parts' valves.

Abstract: A pressure-balanced hydraulic coupling for use in undersea drilling and production operations, the coupling having radial passageways communicating between the male and female members such that substantial fluid pressure is not exerted against the face of either member during coupling or uncoupling or during the coupled state. Check valves in both the male and female members are opened when the male member probe is fully inserted into the receiving chamber of the female member. Mutually opposed valve actuators contact one another to effectuate the simultaneous opening of each check valve, and allow fluid to flow through a valve port and then radially through matching fluid passageways in the male and female members. The radial passageways of the male and female members match up at their longitudinal surfaces so that fluid pressure between the male and female members is in a substantially radial direction and is not exerted at the face of either member.

Abstract: An apparatus for transferring electrically conductive coating materials such as water-based paint from a source to an electrostatically charged dispenser includes first and second shuttle devices and two large reservoir, piston pumps. The first shuttle device is movable between a neutral position wherein the first shuttle is electrically isolated from the filling station, and a transfer position wherein coating material is transmitted from the source to one of the piston pumps through a coupling device which connects the filling station and first shuttle. The second shuttle device is movable with respect to a discharge station between an neutral position wherein the second shuttle is spaced from the discharge station, and a transfer position wherein coating material is transmitted from the filled piston pump, through another coupling device which connects the second shuttle and discharge station and then to the second piston pump for transmission to one or more electrostatic coating dispensers.

Abstract: A pipe coupling consisting of male and female elements for connecting and disconnecting a hydraulic or pneumatic piping used for industrial machinery. Each coupling element includes a check valve therein which is actuated by connecting and disconnecting operation to automatically open the passageway of the coupling when it is connected and to automatically close it when it is disconnected.The inventive pipe coupling is designed for use with a conventional automatic connecting and disconnecting device such as automatic coupling device for large scaled industrial machinery.

Abstract: The present invention includes a system for storing and transporting a liquid in which a series of tank cars each have a hollow tank body with an inlet and an outlet supported on a frame with a plurality of wheels on the frame. In one embodiment, these cars are connected together with a sealable male fitting and female fitting which interengage to allow fluid flow between the cars. Using this valve arrangement, a series of cars hooked together may be filled from a single fill point or station. A method of storing and transporting a liquid involving these storage cars is also disclosed.

Abstract: A hydraulic coupling assembly having first and second connectors for making fluid connections between two hydraulic fluid lines. One of the connectors has a stationary valve assembly with a valve element moveable into and out of engagement with a valve seat. The other connector has a moveable valve assembly with a second valve element movable into and out of engagement with a valve seat. The valve assembly is movable on a plunger with respect to a connector housing. A bias mechanism such as a spring biases the plunger outward with respect to the housing. When the connectors come together, the valve tips bear against each other and are mutually retracted with respect to the respective valve seats. The bias mechanism acting on the plunger in the second connector maintains the valve elements in contact with one another and in a deflected state permitting hydraulic fluid passage through the fluid passage opened between the connectors.

Abstract: The present invention relates to a solenoid valve disposed over a fuel tank and incorporating a liquid surface detecting valve for detecting the liquid surface in a fuel tank. The solenoid valve comprises a plunger and an adhesion preventive pin wherein the adhesion preventive pin is lowered in the direction of the liquid surface detecting valve at the time of opening of the solenoid valve and the same pin pushes the liquid surface detecting valve downward at the time when the liquid surface detecting valve is attached and adhered to a valve seat thereof, whereby the liquid surface detecting valve is open with assurance.

Abstract: A pressure regulator includes a flexible diaphragm which sets-off a liquid chamber having an inlet and an outlet for respectively introducing liquid into and discharging liquid from the liquid chamber under the control of an associated valve through an actuator operated by the movement of the diaphragm. The valve is carried by a coupling which is connected to the housing inlet which, upon the uncoupling of the coupling, allows inspection and/or repair of an associated valve seat or the actuator through the pressure regulator inlet.The pressure regulator can be cleaned or flushed by a novel method which includes uncoupling the coupling from the liquid inlet and reversing the connection with an associated standpipe outlet and thereafter reopening the liquid inlet valve. Liquid enters the liquid chamber through the standpipe outlet and discharges the liquid chamber through the liquid outlet thereby flushing the liquid chamber in a thorough and effective manner.

Abstract: A disconnection apparatus (88) comprises two disconnect members (12,14) which are interfaced to define a continuous channel (28,29) extends therethrough, and two cylindrical cartridges (84,86) slidably disposed in the channel (28,29). The channel (28,29) intersects two flow paths (70,72) formed in the disconnect members (12,14). The cartridges (84,86) are positionable in the channel (28,29) to block both flow paths (70,72) and are operative to re-direct fluid in order to prevent leakage when the members (12,14) are disconnected.

Abstract: A first coupling (51) and a second coupling (52) composing a quick-acting coupling (26) are respectively provided with check valve bodies (54)(154) and non-spill valve bodies (55)(155). When both the couplings (51)(52) are manipulated for the disconnection thereof, a leak of liquid is adapted to be prevented by means of the respective check valve bodies (54)(154) as well as a spill of liquid is adapted to be prevented by means of the non-spill valve bodies (55)(155). The respective non-spill valve bodies (55)(155) are fitted slidably inside respective non-spill valve port surfaces (71)(171) so as to carry out a liquid sealing respectively. Further, at the time of disconnecting manipulation of the coupling (26), a volume of the liquid phase portion within a non-spill valve casing chamber (63) is adapted to be increased by the movement of a non-spill valve casing (56) in which the first non-spill valve body (55) is fitted.

Abstract: A reconnectable frangible coupling wherein at least one coupling part includes an operating valve and a safety valve. The operating valve utilizes the relative axial movement of the coupling parts during coupling and uncoupling to open and close, respectively, and the spring biased safety valve is engaged and retained in an open position by a valve retainer interposed between the valves. Frangible portions maintain the valve retainer in engagement with the safety valve and upon the coupling being subjected to severe impact, such as an aircraft crash, the frangible portions fracture permitting the valve retainer to disengage from the safety valve allowing the safety valve to close.

Abstract: A pipe coupling comprising a cylindrical body having a fluid passage and a valve for opening and closing the fluid passage, in which the valve has a head portion and a cylinder portion, both made of chemicals-resistant polymers, and the cylinder portion has a plurality of holes penetrating the cylinder wall in the diametrical directions, the holes being formed alternately in the positions shifted in the circumferential direction and the axial direction of the cylinder portion, resulting in that the cylinder portion has elasticity in the axial direction.

Abstract: A connector (10) for use in a contaminated environment is provided. The connector includes first and second couplers (13, 14) which are coupled together to produce a fluid path (148) through the connector. The outer boundaries of the fluid path define a fluid path envelope. The surfaces (126, 128) which could be contaminated and which lie within the fluid path envelope are mated against one another and then captured between a pair of O-rings (46, 122). Parts of these surfaces, as well as other surfaces (130, 132) lying outside the fluid path envelope, are flushed with fluid (142, 144) as the connector is coupled to further reduce contamination. O-rings are also used to clean contamination from parts of some of the surfaces. As a result of these contamination control procedures, the connector can be assembled in a contaminated environment without introducing contamination into the fluid stream passing through the connector.

Abstract: A fluid coupling device has a male section (20) and a female section (21). Each of the sections has two rotatable ball-valve elements (30,31). A docking member (23,24) is mounted on each section to accommodate a misalignment of the flow passageways when the sections are brought together. When the sections are joined together, the ball valves automatically rotate sequentially from flow-preventing positions to flow-permitting positions.

Abstract: A coupling for connecting liquid conduits is disclosed, said coupling comprising an insert nipple (1) and a receiving nipple (15), said nipples being axially moveable in relation to each other for connection and disconnection. The insert nipple (1) comprises a stationary sleeve (2) with a sealing valve body (3) spring-biased and inwardly axially movable therein. The receiving nipple (15) has an outer sleeve (16), an inner spring-biased and inwardly axially movable sealing sleeve (17) and a stationary valve central stay (28) which in disconnected condition sealingly cooperates with the sealing sleeve (17). According to the invention the sealing sleeve (17) is provided at its outer end portion with an inner wedge seal (21) arranged to sealingly cooperate with a wedge-forming conical outer surface (4) on the front end portion of the outer sleeve (2) and comprising a conical support ring (21b).

Abstract: The device comprises a body consisting of a top half shell and a bottom half shell, coupled to one another through the interposition of a resilient membrane which defines a pressure control chamber and a pressure reducing and metering chamber, communicating with a delivery gas outlet, the bottom half shell defining a coupling end piece with the valve of the gas pressure vessel, and a quick coupling being moreover provided, operating between the end piece and the valve, which quick coupling is adapted to operatively engage with the operating handle of a gas control valve of the adjusting device for preventing the adjusting device from improperly engaging with or disengaging from the gas pressure vessel as the gas control valve means is in its open position.

Abstract: A self-flushing subsea hydraulic coupling having a pair of interconnectable male and female and members and a flushing port for flushing the hydraulic line connected to one of the members. Each of the members includes a poppet valve, the poppet valve of the member not designated for flushing being sealed during the flushing operation. During the flushing operation, the male member is partially withdrawn from the female member receiving chamber so that its leading face passes the flushing port. Flushing fluid passes through the hydraulic line connected to the member, through the poppet valve, into the receiving chamber and out through the flushing port. An o-ring seals the receiving chamber and prevents sea water from entering the receiving chamber when the male member is partially withdrawn from the female member.

Abstract: This coupler with valves is of the type which includes an outer tubular body (2), equipped, at one end (2") with means (3) of rigid connection with a source of fluid under pressure, at the other end of which is made the female fitting (7') of the coupler, this female fitting (7'), which contains the valve (14), situated on the feed circuit side, being arranged to permit the engagement and the locking, in its bore, of the male fitting (11) of this coupler, which, in turn, contains the valve (13), situated on the side of use of the fluid under pressure.

Abstract: A valve for controllably admitting a pressurized gas into a bottle and dispensing a liquid from the bottle. The valve attaches to the top of an opened bottle and includes a valve body having a liquid section and a gas section. An intake tube descends from the valve body into the bottle and communicates with a liquid outlet spout through the liquid section of the valve body. Gas from a source of pressurized gas is controllably admitted through the valve body into the neck of the bottle to force the liquid within the bottle up the intake tube and into the liquid section of the valve body. A finger actuated trigger operates against a valve slide to selectively control opening and closing of the liquid and gas sections of the valve body. Valving is arranged so that communication between the liquid inlet and liquid outlet is always established before gas is admitted into the bottle and is maintained until after the gas supply is closed.

Abstract: An improved quick disconnect apparatus comprising a nipple and coupler and having significantly improved Cv or flow characteristics resulting surprisingly from certain specified design ranges of flow path areas in relation to the flow path area at the interior of the input to the quick disconnect, the interconnecting angles, and a high degree of dimensional match between components. The principal structural changes relative to the prior art are provided in the coupler stem and its relation with the components enveloping it. The invention provides a reduction in flow pressure drop of as much as 30 percent or more over the prior art for comparable size quick disconnects.

Abstract: A pressure-balanced hydraulic coupling having a male and female member wherein the male member includes at least one balancing port communicating between the leading face and outer side wall. When the male member is sealed in relation to the annular elastomeric seal in the receiving chamber of the female member, and the poppet valves of each member are closed, the balancing port is used to bleed seawater into or out from the annulus between the coupling members.

Abstract: A tubular body supports a fluid actuated tubular piston connected to operate a coupling mechanism for releasably securing the body to a valve fitting on a refrigerant receiving system. The body encloses components which define a center passage connected to the fitting for first evacuating air from the system and then for directing liquid refrigerant into the system. The passage receives an elongated valve opening member which is fluid actuated to a position opening the valve fitting, and a movable valve member closes the passage to the flow of refrigerant. The fluid actuated coupling mechanism provides for convenient and simple insertion of the tool assembly onto the fitting with no insertion force and also for automatic release of the tool assembly from the fitting after charging is completed. A fluid actuated valve member minimizes the volume of residue refrigerant which vaporizes when the tool assembly is removed from the fitting.

Abstract: A coupling device for detachably connecting male and female coupling members which serve to provide a fluid connection between a fluid source and an implement operated from the fluid source. Check valves are provided in both of the coupler members and an actuating means is provided for engaging the check valve in the male coupler to insure against closing of the male coupler check valve during fluid flow through the coupling device. A fluid actuated lock means is provided to hold the actuating member in its operative position.

Abstract: A check valve system (10) with a fail-safe valve (FSC) comprising either a pair of oppositely acting, oppositely facing, one-way check valves (V1 and V2) located at the interface (42) between two connecting numbers (36, 40), or a shuttle valve (206) and stab (232), for controlling the flow of fluid through the connector members at the member interface. Said valves (V1, V2, and 206) are closed by spring bias when the members are separated but which are mechanically opened when said members engage one another to permit the flow of pressure fluid through the members. The fail-safe valve (FSC or FSCa) is a one-way check valve in one of the check valves (V2) closed against pressure fluid, when said members are joined, but which will open to relieve any pressure which might be trapped in control lines (12a) when the members become disconnected. The members are disclosed as part of a connector (16) and a mandrel (20), and as part of a tree (200), tree cap (202 ), or running tool.

Abstract: A coupling device for receiving and retaining a coupling piece allowing coupling with pressure in the piece coupled while also providing flow checking to prevent unintended closing of the coupled valves. The device includes first and second joined tubular pieces axially movable with respect to each other between a receiving position for receiving a coupling piece and a retaining position for retaining a coupling piece. A valve is movable in the coupling piece between a closed position, an open position and a position past open allowing coupling to a coupling piece with fluid pressure therein. A stop is responsive to the receiving and retaining positions of the tubular pieces so that only when the pieces are in a receiving position can the valve move from an open position to a position past open. The stop is preferably a shoulder on a stem of the valve which engages the leading edge of a collet actuated by a sleeve. The sleeve is disposed between the valve stem and the second tubular piece.

Abstract: A hydraulic swivel connector which includes a block and a stem with a female quick disconnect coupler extending from the stem. Such an arrangement has a very compact design which allows the connector to be used to provide a swivel connection between a hydraulic hose and a tool head for constricted working environments.

Abstract: A butterfly valve provided within a disconnect of a fluid flow line, such as in a fuel dispensing system, incorporating a pair of decoupling members, at least one or a pair of butterfly valves mounted within and in proximity with location for disconnection of the conduit, the butterfly valve incorporating a valve disk held by a retainer and which is spring biased for snapping into closure against its valve seat, when disconnection occurs, to prevent the further flow of fuel from the conduit, or in the instance where a pair of the butterfly valves of this design, are incorporated proximate each of the disconnect members, upon severance of the conduit or hose at this location, effecting an immediate closure of both butterfly valves, preventing the discharge of any further fluid from the remaining separated parts of the fluid conduit.

Abstract: A connector as disclosed for connecting fluid passages through a flexible eet material. The connector is appropriate for use in connecting the coolant lines of a personal cooling garment through a waterproof immersion suit or a chemical proof outer garment. The connector includes inside and outside connector blocks with matching faces that sandwich the sheet material between them. Fluid passages through the two blocks meet at respective ports in the matching faces and are joined by coupling sleeves extending through holes in the sheet material. O-rings around the ports seal the holes through the sheet material. A cap screw or the like secures the two blocks to one another. The connector is equipped with valve male fittings and male lock components of a standard connector system that is now used for personal cooling garments. This allows the use of the connector in conjunction with an existing and satisfactory "zero leak" connect and disconnect system.

Abstract: An emergency line disconnector for an LNG loading/unloading line or the like is made capable of accommodating bi-directional fluid flow. Sliders within the fluid passageways are arranged such that a substantially uniform cross-sectional flow path is provided for the fluid. Sealing devices are mounted on the sliders to cut off fluid flow through the device, and such devices are designed so as to be resiliently operable at the extremely low temperatures of LNG. To dissipate the fluid shock due to rapid closure of the device, a fluid shock absorber employing restrictive passageways may be used to slow the advance of the sliders to their cut-off positions.

Abstract: A rigid mount, breakaway, quick coupler for fluid interconnection includes a spring-activated mechanical stop therein to prevent flow-checking. The flow check stop is supported in a cross bore in a movable inner body member of the coupler and cooperates with a ramp surface for positioning thereof in aligned or laterally displaced positions from the axially movable, flow-checking valve pin, thereby respectively to prevent or allow valve pin movement.

Abstract: A quick-disconnect hydraulic coupling apparatus for connecting fluid lines of a fluid handling system provides substantially unrestricted fluid flow through the coupler assembly. The coupler apparatus includes male and female coupler devices adapted to be connected together and each of which includes a manually operated ball valve which provides a fluid flow path through the coupling apparatus having a cross-sectional area at least as great as that of hydraulic lines which the couplers interconnect. The coupling apparatus provides positive linear locking which maintains the male and female coupling units in linear alignment preventing inadvertent disconnection of the coupler devices.

Abstract: A connector for connecting together two ends of a fluid-carrying line comprises two coupling halves. The female half includes a cylindrical female housing. A support sleeve is concentric with and mounted around part of the female housing, and the forward end is threaded to receive the male half. An actuator sleeve is around the support sleeve. A movable locking member in the form of balls are seated in opening through the support sleeve against the actuator sleeve. A trigger ring inside the support sleeve slides between a blocking position under the balls and an unblocking position releasing the balls. One surface of the actuator sleeve urges the balls against the trigger ring. The threaded forward end of the male half engages the threads of the female half. A nose section on the male half, which extends forward of the threads, engages a trigger actuator ring in the female half.

Abstract: A fluid coupling assembly is provided for fluid transfer with relatively small pressure loss between a pair of fluid flow conduits and with little or no fluid spillage upon subsequent conduit separation. The coupling assembly comprises male and female valve units mounted respectively on the flow conduits and matingly engageable to align valve unit flow paths for fluid transfer between the flow conduits. The flow path of each valve unit is normally closed by an externally finned, motor-driven poppet valve having a valve head contoured for seated reception onto a valve seat and for substantially flush surface abutting engagement with the valve head of the other poppet valve to define a substantially minimum residual volume between the valve heads when the two valve units are matingly engaged.

Abstract: A fluid transport line for conveying a dangerous fluid such as LNG is provided with an emergency disconnector which severs the line in an emergency situation after cutting off the flow of fluid therein. The cutoff system includes a pair of seal pistons urged toward one another to cut off the fluid passageway while allowing fluid trapped between the pistons to escape back into the line, and an external clamp mechanism which allows the line to be separated after the fluid flow has been cut off.

Abstract: A separable coupling for filling or emptying a bulk container of a liquid or semi-liquid food product comprises a closure on the container, and a coupling member attached to a supply or discharge conduit and which is releasably connectable with the closure. Valves on the closure and coupling member are connected in series in the product flow path when the coupling is made. They are connected mechanically together and actuated in series so that the valve of the coupling member is actuated through the agency of the valve on the closure in a fail-safe manner. Provision is made for feeding superheated steam to the part of the product flow path lying between the valves, so that the exposed surfaces of the closure and coupling member can be sterilized or purged before and after a filling or discharging operation.

Abstract: A combination one-way check valve and coupler assembly is shown for use in bleeding air from the wheel brake cylinders of automobiles and the like. This one-way check valve is adapted to be attached to a standard bleeder valve that is assembled to each wheel brake cylinder. One-way check valves have been used for this purpose before, but the present invention incorporates a coupler means between the one-way check valve and a standard bleeder valve that is positive and reliable in operation. This coupler means is in the form of a threaded nut that is threaded onto the inlet end of the valve body of the one-way check valve. The outermost end of this threaded nut is slotted from one side to create a spaced, three-sided flange that is capable of slipping over and behind the nipple of a standard bleeder valve so that when the nut is tigntened onto the check valve body, the nipple will be drawn into sealing engagement with a recessed valve seat of the inlet end of the check valve body.

Abstract: A coupling for conduits through which passes a liquid that must be kept from spilling and/or from being exposed to the air, comprises a pair of parallelepipedal blocks in each of which is disposed a ball valve. Two flat faces of the blocks mate, whereupon the blocks are releasably secured together by bolts. The ball valves are disposed as close as possible to the mating interface of the blocks; and the liquid passageway that opens through the mating faces is surrounded by an annular bevel. Each ball valve has an operator whose rotation through 90.degree. between open and closed valve positions is predetermined by a pin on the operator that engages one or the other face of a recess milled in the block. A pin disposed in a hole in the block is disposed in an annular groove in the valve operator to retain the operator in the block.

Abstract: A quick disconnect coupling having locked valving wherein balls interposed between a shiftable valve element and a stationary guide and which normally emerge during valve seating are blocked by movement of a spring loaded sleeve responsive to high flow conditions from the male half to the female half.

Abstract: A coupling member adapted for joining in tandem a pair of axial flow valves includes a central hub region having back to back bosses extending longitudinally therefrom and a plurality of rib members extending radially therefrom. The spaces between the rib members provide a fluid flow path between the valve bodies. The interior of each of the bosses is hollow to provide means for communicating with the interior of the valve bodies.

Abstract: An improved coupling assembly includes a socket assembly which telescopically receives a plug to connect a pair of conduits in fluid communication. The plug is movable from a disengaged position to a storage position in which the plug is supported by and is telescopically disposed in the socket assembly. The plug can be moved further into the socket assembly to an engaged position in which the conduits are connected in fluid communication. The plug is securely held in the engaged position by locking elements. The plug is releasably gripped in the storage position by a plurality of detents. The detents are mounted on a sleeve which extends through an opening in a faceplate. An actuator flange is disposed on an outer end portion of the sleeve to enable it to be readily depressed. The fluid which is to be conducted through the coupling assembly is identified by the indicia on the sleeve and by similar indicia on the mounting plate.

Abstract: A connecting device for conduits comprising a female connecting element having an axial bore opening at one end, and a male connecting element adapted to be inserted into the axial bore of the female connecting element. A first ball valve assembly has a housing adapted to be mounted at one end on the female connecting element and formed at the other end with a flat mating surface. In the housing, there is a spherical valve element having a diametrically extending through-hole. The mating surface of the housing is formed with an opening through which a part of the valve element projects. On the male connecting element, there is mounted a second ball valve assembly which is similar in structure to the first ball valve assembly except that the spherical valve element does not project beyond the mating surface but is formed with a part-spherical recess for receiving the projected portion of the valve element in the first ball valve assembly.

Abstract: A connection coupling which can be coupled or connected under pressure and employed with hydraulic lines, comprising a non-pressure loaded coupling half and a coupling half under pressure, in each coupling half there is centrally mounted a valve guide. In each valve guide there is axially displaceably arranged a spring-loaded hydraulically impingeable or loadable valve in such a manner that the valve heads, during the coupling operation, are pressed against one another. The non-pressure impinged valve is shifted through twice the possible valve stroke of the pressure impinged valve, and the non-pressure impinged valve is loaded with a spring which is stronger than the spring loading the pressure impinged valve, so that upon pressure equalization the previously pressure impinged valve is pressed in its open position against a stop provided at the previously pressure impinged coupling half, there being provided a maximum valve-passage cross-section for both valves.

Abstract: Method and apparatus for sealing containers. The apparatus includes a slideable carrier closure member in the form of a plate and a closure member that is retained in a recess in the face of the carrier closure member. The two closure members are guided between an open position and a closed position. In the open position the carrier closure member is removed to one side of the opening of a first container and in the closed position the closure member is aligned for sealing the container. The apparatus permits two containers to be joined together, equipment inside one container to be transferred to the other container and the containers to be thereafter separated while continuously maintaining the containers and the equipment sealed from the atmosphere.

Abstract: A breakaway coupling for fluid systems wherein interconnected coupling parts will separate upon predetermined bending or tension forces being applied to the respective parts. A bending or tension force appllied to one part axially misaligned with respect to the other part produces a pivotal movement which automatically releases the coupling connection means permitting the parts to separate without damage. Additionally, the coupling incorporates automatic release structure sensing coaxial tension forces permitting uncoupling without relative pivoting.

Abstract: Apparatus for sampling fluids, i.e. liquids or gases, or both, from a supply source. The apparatus comprises an adapter unit inclusive of a pair of tubular sections, or members, detachably engaged one with the other, each contains communicating inlet and outlet channels, respectively, and each has valve elements for opening and closing the channels. One tubular section of the adapter unit can thus be located at the fluid supply source, and the other adapted for connection to a portable supply container such that, when the valve elements are opened, fluid from the supply source will fill the container and, after the container is filled, the valve elements of the two sections of the adapter unit can be closed to shut off the fluid supply as well as close off fluid communication between the two tubular sections.

Abstract: A valve means for a fuel dispensing nozzle located in the nozzle discharge spout at the outlet end thereof for sealing the outlet end to prevent the flow of fuel and fuel vapors out of the discharge spout when the nozzle flow control valve is closed. The valve means is responsive to the operation of the flow control valve so that when the flow control valve is closed, the valve means is closed and so that when the flow control valve is operated to flow fuel through the discharge spout, the valve means is open. To this purpose, actuating means responsive to the operation of the flow control valve are provided to establish fluid communication between the valve means and the flow passage upstream of the flow control valve and, alternately, between the valve means and the flow passage in the discharge spout. In one embodiment, the valve means located in the discharge spout at the outlet end thereof is a pinch valve, and in another embodiment, the valve means is a wafer valve.

Abstract: A quick-closure coupling for hydraulic lines in which two insertable coupling halves are lockable in a coupling position, and are constructed in the form of a plug valve and a sleeve valve, each having a closure piece. The closure piece is spring loaded in the closure direction, and held in a closed position when the coupling halves are separated. One of the coupling halves is provided with a stop which restricts a valve stroke of the closure piece in the opening position. The other coupling half has the closure piece loaded with a stronger spring and has a valve stroke equal to twice the opening stroke of the other closure piece. One of the coupling halves has a closure piece which can execute the opening stroke, and has a locking device which is ready to lock due to axial displacement of the closure piece beyond a single opening stroke.