Abstract: A fuel control device and method of making the same are provided, the fuel control device comprising a housing having an inlet separated from an outlet by a valve seat and having a movable valve member for opening and closing the valve seat, an electrical coil, a movable armature being moved to a first position thereof when the coil is energized and being moved to a second position thereof when the coil is deenergized, and a tension spring operatively interconnecting the valve member to the armature.

Abstract: A progressive distributor valve including a plurality of spool blocks each of which is mounted on a spool base block, the spool blocks having reciprocating spools therein for distributing lube oil into respective spool base blocks, and a shut off valve base block mounted to an adjacent spool base block and having a comparable size thereto, the valve base having an inlet for receiving lubricant and an outlet connected to an adjacent spool base block. The inlet of the valve base is connected to a source of lube oil. A valve block is mounted onto the valve base block and having a valve inlet flow connected to the inlet of said valve base block and an outlet flow connected to the outlet of the valve base block, and a flow channel and valve seat between the valve block inlet and outlet.

Abstract: A miniature piezo electric vacuum inlet valve having a fast pulse rate and is battery operated with variable flow capability. The low power (<1.6 watts), high pulse rate (<2 milliseconds), variable flow inlet valve is utilized for mass spectroscopic applications or other applications where pulsed or continuous flow conditions are needed. The inlet valve also has a very minimal dead volume of less than 0.01 std/cc. The valve can utilize, for example, a 12 Vdc input/750 Vdc, 3 mA output power supply compared to conventional piezo electric valves which require preloading of the crystal drive mechanism and 120 Vac, thus the valve of the present invention is smaller by a factor of three.

Abstract: A pump for distributing water at an extremely high-pressure to several appliances. Every appliance can connect and disconnect independently and has associated with it a device that diverts the water trapped in it when it disconnects. The object is to minimize wear in the water-diversion device. The device accommodates a constricted section in the form of an annular space that the water trapped in the appliance can escape through. Such pumps are employed for cleaning a wide range of articles.

Abstract: A butterfly valve for controlling the flow of high temperature fluids includes a valve body defining a flow path and having opposed portals. Cover plates are mounted over each of the portals and have a conical shaped wall extending inward to a bearing support member. A flow modulator is disposed between the cover plates and is mounted to the bearing support members by ceramic bearings. The modulator has a plate disposed in said flow path which is bounded by a leading edge, a trailing edge, and two disk flanges. Each of the disk flanges has a labyrinth seal in sealing engagement with an inner wall of said valve body. Nozzles are mounted to said cover plate to deliver cooling air flow to the bearings. A constant cooling flow rate is maintained by appropriately sized circumferential chambers adjacent each of the labyrinth seals.

Abstract: A pneumatic control device for needle valves in injection molding systems. The control device has a control piston, a needle valve, a control cylinder and a cylindrical receptacle in which the control cylinder is positioned. The needle valve is adjustably secured to the piston. The control cylinder has channels for supplying and removal of pressure gas from two cylindrical chambers separated by the control piston. The control cylinder is firmly positioned against the surface of the recess in which it is situated. A plurality of seals positioned between the contact surfaces define two chambers separated from one another. A pressure gas channel is connected to each of the chambers for supply and removal of pressurized gas into and out of the chambers which control the movement of the control piston and thus the needle valve.

Abstract: An IV component has at least one opening and a valve associated with the opening. The valve is normally closed to prevent fluid communication through the opening. A needleless connector can be engaged with a male element of the valve to open the valve and thereby establish a passageway for fluid communication thorough the opening.

Abstract: A rotary valve disc is provided internally of a single continuous length of pipe, and is secured therein by a segmented pipe coupling, thus eliminating requirement for two independent pipes and a separate seating for the valve disc, and permitting a reduction in the wall thickness of the pipe, particularly of pipes of plastics material.

Abstract: The valve assembly 20 has two housing halves 22 which are bolted together to form a housing 24 for two resilient valve liners 26 with coaxial through passages 28 for the flow of fluids through the assembly. A metal gate 30 selectively blocks the through passages 28. Each valve liner 26 has a radially extending flange 32 in which is embedded a frustoconical metal spring 34 which biases the flanges against the gate 30 and retains a seal about the gate in a valve closed configuration. The assembly has a split seat formed by two seat inserts 36 retained in the housing halves 22 beneath the valve liners 26. The seat inserts 36 are open to the bottom of the housing 24 and permit debris to be ejected from the valve assembly 20. The spring may be formed to have ends which are not connected and positioned by inserting a locator tab on the exterior flange of the liner into a corresponding depression in the valve housing.

Abstract: On a bottom cover 18, which is mounted on bottom surface of a valve body 6 of selector valves 1A and 1B for the purpose of covering unnecessary holes, engaging sectors 28 are formed, and by engaging the engaging sectors 28 with engaging edges 4b and 4b of a rail 4, the selector valves 1A and 1B are mounted on the rail 4 via the bottom cover 18.

Abstract: A valve arrangement, particularly to a solenoid valve arrangement for slip-controlled automotive vehicle brake systems, with a first valve closure member, in particular a hydraulically actuatable non-return valve, and a second valve closure member, preferably electromagnetically controllable by means of an armature and a magnet coil and arranged in a valve accommodating bore of the valve housing accommodating the valve arrangement, with both valve closure members being operable independently of each other in terms of action and being jointly arranged in the valve accommodating bore of the further valve closure member. This ensures a compact and easy manufacture of the valve arrangement.

Abstract: A titanium engine valve is fabricated with discrete head and stem portions, preferably joined by inertia welding and/or diffusion bonding. The joint between the head and stem portions is located well up on the valve stem so that it is not exposed below the valve guide. The head portion, including a fillet region and lower stem region, is composed of a first material comprising titanium, such as a conventional high strength titanium alloy. Alternatively, the head portion may consist of a cast or forged heat treated TIC. The stem portion, which is not directly exposed to the hostile environment of the combustion chamber, is composed of a second material comprising titanium, such as mill annealed titanium alloy rod stock. The resulting valve is, therefore, much less expensive to manufacture than a conventional titanium valve without sacrificing any mechanical characteristics in the portions of the valve subjected to high stress and temperature.

Abstract: A spool valve possesses a longitudinally divided valve housing, in the case of which housing parts are assembled with longitudinal sides fitted together. In the wall of the valve housing valve ducts are provided. In order to enable simplification of the manufacture of such valve housings at least part of the length of a valve duct extends in the parting interface of the valve housing. In this respect the wall of the valve duct is made up of complementary peripheral wall portion, which are provided at the housing parts adjacent to each other in the parting interface.

Abstract: A seat ring is resiliently fitted into upper and lower main bodies of a butterfly valve divided in a horizontal direction of piping so as to prevent a fluid from being leaked from the butterfly valve.

Abstract: In a preferred embodiment, in a fluid flow valve having a body and having a movable member with lower face, the movable member being movable between a position spaced from a sealing position in the body when the valve is in an open position and movable to the sealing position when the valve is in a closed position, the improvement including: an annular sealing member disposed in the outer periphery of the lower face of the movable member to sealingly engage a portion of the body when the valve is in the closed position.

Abstract: A method of manufacturing by welding a shaped workpiece, which is formed of a plastic material and which consists of a tubular part having a radial bore and a union weldable to the tubular part in a region of the radial bore, includes bringing an end face surface of the union into abutting engagement with an outer circumference of the tubular part in the region of the radial bore, and heating a circular region around the radial bore of the tubular part and the end face surface of the union by heat radiation, with subsequent pressing of the two parts against each other.

Abstract: A multiple-valve system is transiently electromagnetically actuated by a single electrical winding, for concurrent change of state for each of the multiple valves, and a permanently magnetized portion of involved magnetic circuitry serves to latch both valves in the operative state into which they have been actuated. The preferred embodiment is based on valve-body structure which is a unitary consolidation of plural slabs of magnetic material in alternation with slabs of non-magnetic material. An electromagnetic actuator includes a U-shaped core having pole faces secured to the uppermost slab, in confronting relation with valve members of magnetic material. A first polarized magnetic-latch circuit exists via the U-shaped core, together with the valve members and a magnetized body slab when in valve-open condition. A second polarized magnetic-latch circuit exists via the magnetized slab, the valve members and another magnetic slab, when the system is in valve-closed condition.

Abstract: The invention contemplates a method of making a valve body for a magnetically actuated twin-valve system, wherein the valve body comprises a body block of three relatively thick slabs vertically bonded to each other and to the consolidated height of their combined thicknesses, the first and lower most slab being of non-magnetic material, the second and intermediate slab being of magnetic material, and the third and uppermost slab being of non-magnetic material; the method comprises the steps of (a) inertia-welding said slabs to each other; and (b) machining first and second spaced valve-member guide bores through said second and third slabs and through at least a portion of said first slab, with a valve-seat opening at the otherwise closed lower end of each bore of said first slab and with independent lateral-access inlet-port communication with the respective bores in said first slab.

Abstract: A fluid control valve for controlling fluid flow includes a valve housing having an inlet port, an outlet port, and a passage in the valve housing interconnecting and permitting fluid communication between the inlet port and the outlet port. The passage is substantially smoothly contoured along the length of the interior thereof so that when fluid flows through the passage, the flow of fluid will not substantially increase in turbulence in the passage. The fluid control valve further includes a removable valve seat having an inner flow aperture substantially matching the interior contour of the passage thereby minimizing the turbulence of fluid flow in the passage. A valve element is moveable between a first position wherein fluid flow is permitted through the passage and a second position wherein the valve element sealingly engages the valve seat substantially blocking fluid flow through the passage. The valve seat is removably mounted in the passage.

Abstract: A novel metering valve is used to split the streams in which a continuous fluid stream passes unregulated through the valve along a primary flow path. A second stream is formed by passing a small portion of the fluid in the primary flow path through a passage in a valve seat. The fluid passing through the valve seat is precisely metered by a valve stem which engages the valve seat passage to control the amount of fluid diverted from the primary flow path. Both fluid from the unregulated primary flow path and through the metered flow path flow simultaneously from the valve. The metering valve of the invention has particular use in processes for dividing a condensed distillate stream into a product stream and a reflux stream.

Abstract: The valve assembly 20 has two housing halves 22 which are bolted together to form a housing 24 for two resilient valve liners 26 with coaxial through passages 28 for the flow of fluids through the assembly. A metal gate 30 travels vertically within the housing 24 to selectively block the through passages 28. Each valve liner 26 has a radially extending flange 32 in which is embedded a frustoconical metal spring 34 which biases the flanges against the gate 30 and retains a seal about the gate in a valve closed configuration. The assembly has a split seat formed by two seat inserts 36 retained in the housing halves 22 beneath the valve liners 26. The seat inserts 36 are open to the bottom of the housing 24 and permit debris to be ejected from the valve assembly 20. An alternative embodiment valve assembly has a wave spring which applies a force through an embedded ring to bias the valve liners against the gate.

Abstract: A flow valve for mating with a fluid coupling of the type comprising a cylindrical body and a plurality of circumferentially spaced latches. The flow valve comprises a generally cylindrical valve housing and an annular flange adjacent one end of the valve housing. The flange is mounted to the valve housing such that the flange is rotatable to facilitate repositioning of the flange to distribute wear on the flange caused by the circumferentially spaced latches of the fluid coupling. In a preferred embodiment, the flange is symmetric and the flange and the valve housing each comprise a predetermined pattern of holes for receiving fasteners for mounting the flange to the valve housing. After a period of use, the fasteners can be removed and the flange repositioned, or reversed, to distribute wear to other locations on the flange.

Abstract: A magnetically linked twin-valve assembly is electromagnetically actuated in response to excitation of a single solenoid winding. Valve-body structure features relatively thick non-magnetic and magnetic slabs which are bonded into a consolidated body block, in laminated alternation, prior to machining the same for dual-valve purposes. Two spaced guide bores through the body block accommodate movement of separate valve members of magnetic material; the upper end of each of these valve members is upwardly exposed in confronting relation with one to the exclusion of the other pole face of the U-shaped core of an electromagnet, whereby a single magnetic circuit, established by the U-shaped core and the valve members, relies upon the middle slab of magnetic material to complete the circuit by magnetically linking both valve members. Inlet and outlet flows of pressure fluid pass through separate chambers formed primarily in the lowermost slab on the respective guide-bore alignments.

Abstract: The invention concerns a water-cooled casing for a hot-blast slide valve, in particular a slide valve in a pipe lined with refractory material. The casing has annular cooling-water ducts disposed concentrically with respect to each other in pairs, one downstream of the other with respect to the hot-air blast and on both sides of the space through which the sliding plate of the valve passes. The annular ducts are formed by two monobloc-construction casing components, each of which has two substantially annular hollows, the hollows being closed over by first and second annular components to form the ducts.

Abstract: In an arrangement having a plurality of solenoid valves disposed between a housing and a housing cover, the cover being attached to the housing by bolts, collar members are disposed around the bolts, and between the housing and the housing cover.

Abstract: A hydraulic coupling comprising a first part having at least one check valve, a second part having at least one check valve, and a seal plate designed to be placed between the first and second parts. The first part, second part and seal plate are oriented in relation to one another. At least one connecting member disposed in the seal plate to establish communication between the interdependent check valves. In the extension of each check valve there is disposed a cylindrical surface, the center axis of which coincides with that of the check valves, and said connecting member is at each end formed with partial, open spherical cups for external sealing interaction with the cylindrical surfaces, the internal spherical surfaces being subjected to the same pressure as that in the medium which passes through the valves and the connecting member for the purpose of actuating the radial forces in the spherical cup. On the outside of the hydraulic coupling a tool can be used to carry out the coupling operation.

Abstract: The invention relates to a wedge guide for a gate valve which is able to be inserted into the housing of the gate valve. A readily replaceable wedge guide which is well adapted to the particular requirements has a tube part fitted with two guide bars and which has recesses encompassing the seat rings arranged in the housing of the gate valve.

Abstract: A rotary control valve with a variable area orifice (or orifices) which communicate with a bypass channel in order to provide infinite control of flow across the valve. The bypass channel may contain a silencing means. This arrangement allows for in-line maintenance of, or modification to, either the silencing means or the valve body itself through top entry of the valve. The cross-sectional void area of the bypass channel may be sized to be the same as the cross-sectional area of the upstream and downstream valve ports in order to provide silencing without throttling the flow through the valve.

Abstract: A valve block, in particular for aggressive fluids and/or fluids of increased temperature, includes a plurality of valve cartridges and an adapter for attachment of the plurality of valve cartridges. The adapter includes passageways for communication with each individual valve cartridge. The adapter is made of plastic material through an injection molding process and includes fittings for attachment of hoses, with the fittings being injection molded and fixed to the adapter through ultrasonic welding. At a location before and behind each valve cartridge are metallic electrodes fitted in the adapter and electrically connected to an analyzer so as to form an electric circuit which is closed by the electrically conductive fluid in order to allow each valve cartridge to be monitored for leaks.

Abstract: A spool valve having a valve housing with an internal spool receiving space, in which a valve spool is arranged. A plurality of sealing rings are arranged in axial sequence. Such sealing rings are retained in holding recesses, which are formed integrally with the valve housing. The valve housing is itself longitudinally divided and is composed of a plurality of housing parts which respectively constitute a wall section, extending for some distance in the peripheral direction, of the spool receiving space including the associated peripheral sections of the holding recesses. It is in this manner that the sealing rings may be inserted into the spool receiving space without any difficulty in the separated condition of the housing parts, whereafter the housing parts only have to be fitted together.

Abstract: A stream selector for a process analyzer. The stream selector includes a valve module having two block valves and a bleed valve. In a first mode, the block valves are closed and the bleed valve is open. In a second mode, the block valves are open and the bleed valve is closed. In a third mode, all of the valves are open, thus ensuring that the module is completely purged. A stream-selection valve manifold is made by joining two or more valve modules side by side to form a common outlet and a common passageway, thus ensuring that the manifold is completely purged. The stream selector also provides a single block-and-bleed valve module having a disposal passageway which establishes fluid communication between a vent compartment and an external area suitable for the safe disposal of sample fluids and compressed gas contained in the valve module.

Abstract: A cylindrical seal arrangement is provided by alternatively disposing a plurality of O-ring seals and cages in a generally cylindrical arrangement. The O-ring seals are generally annular in shape and, in cross section, comprise an inner portion, an outer portion and an connector portion. The three portions of the O-ring seal cross section define annular grooves in the axial surfaces of the seals. Cages are disposed in alternating positions with the seals and each cage is provided with an annular protrusion extending from its axial faces. The protrusions are shaped to be received in the annular grooves of the seals and the O-ring seals and cages are sized to prevent compression of the inner portion of the seal in an axial direction when an axial force is exerted on the cage and seal assembly.

Abstract: A two stroke cycle engine has an engine block with a cylinder bore accommodating a piston. An exhaust port connects the cylinder bore to an outside of the engine block. An exhaust port control valve mechanism within the engine, according to this invention, includes a valve pivotally mounted in the exhaust port between the cylinder bore and the outside for rotation between an open position and a closed position. The valve defines an upper timing edge of the exhaust port. An insert fills a volume in the exhaust port between the valve and the outside, thereby improving flow efficiency of the exhaust port.

Abstract: A laminated plate structure including conduit and regent delivery means for a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. Fluid channels are formed in the plate structure to provide a means for delivering fluids from a plurality of fluid reservoirs attached to the plate structure to one or a plurality of treatment reservoirs attached to the plate structure. Each fluid is delivered by a system comprising a fluid reservoir, an inlet valve in fluid communication with the fluid reservoir, a positive displacement pump in fluid communication with the inlet valve and an outlet valve in fluid communication with the positive displacement pump all of which are attached to the plate structure. The means for delivering fluid and the fluid reservoirs are positioned on opposing surfaces of the plate structure. The plate structure is provided with vent holes for venting vapors that may be produced during formation of the plate structure.

Abstract: A fluid distribution device having a circuit including a first and a second duct between a common inlet and a common outlet. A third duct to the first duct and a fourth duct to the second duct. A one-way valve at each side of the connections from the third and fourth ducts to the first and second ducts enables flow from the inlet into each of the third and fourth ducts, but prohibits flow from the third and fourth ducts back to the inlet and only permits the latter flow out of the outlet. Various valves at the inlet and the outlet control pressure. A return path from the outlet to the inlet has a cooler in it. A reservoir supplies fluid.

Abstract: A rotary control valve is provided with a variable area orifice in the control element that communicates with a bypass channel, which contains noise silencing means, when the valve is in the less than full-open position. This arrangement minimizes cavitation and noise when the valve is not in the full-open position while providing maximum flow with minimum friction and pressure drop when the valve is in the full-open position. The removable bypass channel configured with a single variable orifice in the control element allows for in-line maintenance of, or modification to, either the noise silencing means in the removable bypass channel or the valve body itself through top entry to the valve. The cross-sectional void area of the upstream and downstream ports as a means of further reducing noise and controlling velocities. The silencing means located within the bypass channel can be a multiplicity of balls or other such means that can be placed within the bypass channel.

Abstract: A clamping assembly for securing a transmission operating control valve body to a transmission case. The clamping assembly utilizes at least one biasing member having a hub portion. The hub portion has a generally centrally disposed aperture with a plurality of spring arms extending radially outwardly from the hub portion. Each spring arm has a distal end that is adapted to engage the valve body. A spacer is interposed between the hub portion and the valve body. A fastener is receivable through the aperture and through the valve body to be anchored in the transmission case, thereby securing the valve body in position.

Abstract: In the present valve, the valve housing consists parts, namely a block (10) having a through-hole (11) which is preferably conical and a sleeve (20) which fits, with at least the essential part of its lateral surface, tightly and in a self-sealing manner in this hole and contains the cylindrical through-hole for the control piston (35) of the valve and, in its lateral surface, at least one groove (33 and 34) connecting to one another the two windows (27 and 29) furthest away from one another. This design makes it possible on the one hand for the connecting line between the two windows furthest apart to be produced in a substantially simpler manner than in the past.

Abstract: An air distribution housing in an automotive air conditioning system includes spaced wall portions forming an air passage for flow of conditioned air into the passenger compartment of a motor vehicle; each of the wall portions having pins directed internally of the wall portions without forming openings therethrough and including distal ends thereon inserted into a tubular end portion of the valve member for pivotally supporting the valve member within the air passage without penetrating through the spaced wall portions so as to prevent air leakage and resultant noise from the air distribution housing. A method of assembly of the air distribution housing includes the steps of providing two separate housing parts with integrally formed pins on the inner surfaces thereof; providing a valve door with a pivot tube on one end thereof; vertically locating one end of the tube on one of the pins; thereafter joining the housing parts to locate the other pin in the other end of the pivot tube.

Abstract: A valve connection array for mounting at a cabinet wall in a sealed cabinet for disposing a plurality of valve connection blocks in at least one row is disclosed. Each valve connection block includes a valve connection portion on a front surface for individually connecting a valve and associated connections ports on a rear surface for connecting pressurized medium conduits. At least one row of valve connection blocks define between opposite side surfaces thereof at least one inlet port and at least one outlet port for providing common inlet and outlet ports between juxtaposed valve connection blocks. The blocks include means for mounting the blocks in said row with said sides sealingly juxtaposed for defining said common inlet and outlet ports between blocks and with said blocks defining a common flat surface area substantially in the form of a rectangle around said row.

Abstract: A microvalve composed of multiple layers bonded together is distinguished by the fact that all layers are structured only from one side. Prior to bonding of a new layer to the preceding layer, the new layer is homogeneous or unstructured. Only after bonding of the new layer to the preceding layers or wafers is the newly-applied layer provided with a structure, by etching or other profiling method. This simplifies construction, and reduces manufacturing cost, of the microvalve. The valve can be used for either liquid or gaseous media. It is adapted for use, inter alia, as a fuel injection valve or as a pilot control stage of servo-valves used in anti-lock braking systems (ABS). A method of producing a sealed cavity with a residual gas pressure therein, which may have applications other than valve manufacture, is also disclosed.

Abstract: A modular butterfly valve includes a disc member which is selectively rotated between an open and a closed position, a housing, a resilient valve seat, and a clamping ring which are held together by a hinged coupling ring. The disc member is resiliently suspended in this valve by the valve seat, which provides for a self-centering of the disc-member. The hinged coupling ring may include an integral actuation means which is keyed into alignment during assembly. This modular butterfly valve assembly is adapted for being attached to an adjacent apparatus by a quick coupling means.

Abstract: A valve unit installed in the pipeline equipped with double tubes. A valve body has an inlet passage, an outlet passage and a valve chamber. An inner tube of an inlet double tube is welded to the inlet passage of the inlet double tube, and an outer tube of the inlet double tube is secured to the valve body. The outlet double tube is also attached to the valve body. A cover is welded to the valve body, the inlet double tube and the outlet double tube. Passages are provided for leading leaked gas from the valve chamber to conduits formed between the outer tube and the inner tube of the inlet double tube and the outlet double tube.

Abstract: A valve has a housing, and a partition in the housing which is inclined to the transverse and longitudinal axes of the housing. The partition, which is welded to the housing, consists of a plate having an opening formed by bending portions of the plate out of the plane of the latter. The bent portions are inclined to such plane and include surfaces which bound the opening. These surfaces extend conically and define a valve seat.

Abstract: A diaphragm valve is described which comprises a lower housing portion and a upper housing portion which are clamped together by a fastening device. An elastomeric diaphragm is located between the lower housing portion and the upper housing portion. A compression spring is arranged between either the lower housing portion or the upper housing portion and an element of the fastening device.

Abstract: An engine shutdown valve comprises a housing and a gate movable within a housing between a first position where the air flow through the shutdown valve is substantially unrestricted to a second position where the opening is restricted thereby stopping air flow. The gate is pivotable about an axis and a drive is located concentrically about the axis to rotate with the gate. The drive has a recess which is engageable by a piston movable between a first position where the gate is held in its latched position and a second position out of engagement with the recess so as to allow the gate to move to a position where the air passageway is closed. The piston assembly is located substantially wholly within the housing with only the piston of the piston assembly extending therefrom. The housing is divided into two halves joined together with cap screws having axes transverse to the axis of rotation of the gate.

Abstract: A gas valve includes two solenoid valves connected fluidically in series. A housing assembly contains a circuit board on which electrical components and a plurality of plug terminals and pin terminals are mounted. The plug terminals are adapted to be connected to the solenoid valves and the pin terminals are adapted to be connected to external circuitry. The housing assembly is adapted to be attached to the valve body either in a first position wherein the pin terminals extend in a first direction or in a second position wherein the pin terminals extend in a second direction. The housing assembly and the solenoid valves are adapted for enabling connection of the solenoid valves to the circuit board when the housing assembly is in either the first or second position. The solenoid valves are operated by direct current and are so mechanically constructed as to operate in a relatively quiet manner.

Abstract: A valve has a valve seat, and a housing which accommodates the seat. The housing is formed from two sheet metal shells each of which has two sections. A first section of each shell defines a conical frustum, and the larger-diameter end of each frustum is bevelled. The second section of each shell is cylindrical and is seamlessly connected to the bevelled end of the respective first section so that the first and second sections of each shell are inclined relative to one another. The second sections have respective plane end faces which confront one another and are located in planes intersecting both the transverse and longitudinal axes of the valve. A circumferentially complete weld seam bonds the end faces to each other.

Abstract: A plate structure including conduit and reagent delivery means for a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. Fluid channels are formed in the plate structure to provide a means for delivering fluids from a plurality of fluid reservoirs attached to the plate structure to one or a plurality of treatment reservoirs attached to the plate structure. Each fluid is delivered by a system comprising a check valve in fluid communication with a fluid reservoirs, a positive displacement pump in fluid communication with the check valve and an injector in fluid communication with the positive displacement pump all of which are attached to the plate structure. A partition switch attached to the plate structure is provided to direct fluid to the desired treatment reservoirs or pressure reservoirs.

Abstract: A valve assembly suitable for both high and low pressures, includes a base plate (1) a first connection surface (3) and a valve housing (2) which forms a corresponding facing second connection surface (4), a pressure-tight connection which is useful for a battery arrangement and does not consume space elsewhere required. The connection can be created and maintained by a yoke (9) which grips below the valve base plate (1) in a longitudinal direction (8), having arms (9a, 9b) which extend on narrow side surfaces (1a) of the base plate (1) and of coupled valve housing (2), on which arms detent projections (10), which engage into corresponding recesses (2a) of the valve housing (2), are provided. Ease of assembly and disassembly is provided by additional projections (11) which engage in detent troughs (12) on the base-plate side surfaces (1a).