Abstract: A gear box includes a casing having a partition portion, a supporting shaft fixed to the partition portion, and an output shaft supported so as to be rotatable around the supporting shaft and to which a pinion gear is fixed. The casing has a division wall that is positioned in the ?Z direction with respect to the partition portion and is capable of abutting against the supporting shaft. The division wall constitutes a portion of a motor accommodation portion for accommodating a motor.

Abstract: A transmission assembly structure includes an engine-side joining surface, a transmission-side joining surface, which is joined to the engine-side joining surface, an engine component which is provided on an outside of the engine-side joining surface in a radial direction in the flywheel housing and protrudes toward the transmission side, a guide member which is provided on the engine-side joining surface or in the vicinity of the engine-side joining surface of the flywheel housing and in a vicinity of the engine component and which protrudes toward the transmission side further than the engine component, and a guide hole, which is provided on the transmission-side joining surface of the transmission housing or in the vicinity of the transmission-side joining surface and into which the guide member is inserted.

Abstract: A gear assembly is provided. The gear assembly includes a first gear that rotates about a first axis and includes a first gear face with a plurality of first gear teeth; a second gear that rotates about a second axis and includes a second gear face with a plurality of second gear teeth, where the first axis is not parallel with the second axis and the first and second teeth rotatably engage as the first gear rotates about the first axis and the second gear rotates about the second axis; a scraper that includes a distal interference surface in face-to-face proximity with at least one of the first plurality of teeth as the first gear rotates about the first axis, where the interference surface removes oil entrained adjacent to the plurality of first or second gear teeth as the first or second gears rotate.

Abstract: A cooling arrangement to cool the rollers of a toroidal CVT is described herein. The cooling arrangement includes nozzles so configured and sized as to project cooling fluid onto the edge and onto the opposite top and bottom surfaces of the roller.

Abstract: An apparatus for controlling the temperature of an oil cooler in a motor vehicle may include a temperature control arrangement. The temperature control arrangement may have a cold thermostat with a limit operating temperature and a warm thermostat with a lower limit operating temperature, the warm thermostat being connected in a fluid-connecting manner to the cold thermostat. The temperature control arrangement may also include a cold inlet for a coolant at a first temperature and a warm inlet for a coolant at a second temperature, the first temperature being lower than the second temperature. The temperature control arrangement may further include a coolant outlet fixable in a fluid-conducting manner to a coolant inlet of the oil cooler.

Abstract: Transmission arrangement for a motor vehicle, comprising at least one clutch unit and at least one actuator unit that allows the clutch unit to be actuated; the actuator unit additionally allows a pump to be actuated such that lubricant is pumped from a lubricant sump into a lubricant reservoir.

Abstract: A planetary wheel drive uses a single wall output planet carrier includes an internal spline fixed against rotation through an interconnection with an external spline of the stationary spindle. A locking lug of the single wall output planet carrier extends into a notch of a bearing nut. The locking lug prevents the bearing nut from unthreading itself from the stationary spindle. An output planet thrust plate is bolted to an output planet pin.

Abstract: A speed reducer includes two intermediate lines for a turboprop engine, the reducer including: an input line including an input shaft bearing an input gear wheel, a first intermediate line including a first intermediate shaft bearing a first intermediate gear wheel, a second intermediate line including a second intermediate shaft bearing a second intermediate gear wheel, a spring held by a frame, the spring surrounding a longitudinal portion of the input shaft in order to allow a movement of the input gear wheel towards an equilibrium position corresponding to an equal distribution of the transmission of the power coming from the input shaft to the first intermediate shaft of the first intermediate line and the second intermediate shaft of the second intermediate line.

Abstract: A shift lever assembly may include a shift lever housing having a shift lever rotatably coupled thereto in a shift direction, a front and back direction of a vehicle, and a select direction, a left and right direction of the vehicle; a base bracket configured to be coupled to the shift lever housing and fixedly disposed on a vehicle body; and a fastener configured to extend in the shift direction to couple the shift lever housing and the base bracket to each other.

Abstract: An oil supply system of an automatic transmission or an automated manual transmission in a power train has an oil pan and a pressure line for supplying elements of the transmission with pressurized oil. A pumping device pumps oil from the oil pan into the pressure line at a supply pressure P0. A hydrodynamic converter, being a starting element, forms a subsection of the pressure line. A hydrodynamic retarder is disposed in a retarder oil circuit. At least a first switching valve, a second switching valve and a heat exchanger, wherein the heat exchanger is selectively switchable, by way of the switching valves, as a subsection into the pressure line or the retarder oil circuit. A temperature sensor is provided following the pumping device in the direction of flow in order to detect the oil temperature in the pressure line.

Abstract: A torque converter is provided with a stator having adjustable fluid flow holes for changing the K-factor of the torque converter, as needed. The stator includes a base plate with fluid flow openings and an adjustable plate with fluid flow openings. The plates matingly engage, such that the fluid openings are adjacent one another. The degree of overlap of the openings can be varied from fully aligned to substantially misaligned by rotating the adjustable plate relative to the base plate, and thereby controlling the fluid flow through the openings. In alternative embodiments the stator holes can be automatically opened and closed in response to changes in fluid pressure in the torque converter, via reed values or spring biased balls.

Abstract: A continuously variable transmission capable of operating in a forward direction or reverse direction may be controlled in the reverse direction by providing an initial skew angle in a first skew direction, followed by a set or sequence of skew angle adjustments in an opposite direction to prevent runaway or other unintended consequences. A continuously variable transmission may include a timing plate to maintain all planets at an angle or within a range of an angle in forward and reverse operations.

Abstract: A vehicle transmission includes a toothed gear, a shift sleeve, a shift fork configured to actuate the shift sleeve, and a fork bend partially surrounding the shift sleeve in an installed state. At least one region of the fork bend has an axial step. The at least one region having the axial step has a shape of a circular ring section substantially extending at an angle of 180 degrees in a circumferential direction of the fork bend. The axial step has two radially adjacent sections arranged axially offset in relation to one another. One section of the fork bend partially engages in the toothed gear in an initial switching state and a second section of the fork bend overlaps with one side wall of a groove in the shift sleeve in an axial direction.

Abstract: A piston ring may have a base with a sliding external surface, an internal surface, an upper surface, and a lower surface, the external surface having chamfered edges. The external surface, the internal surface, the upper surface, the lower surface, and the chamfered edges may have a coating provided with a nitrided first layer having a thickness of up to 2% of a nominal axial thickness of the ring when applied to the upper surface and the lower surface, and a thickness of up to 10% in relation to the thickness of the first layer applied to the upper surface and the lower surfaces when applied to the external surface and to the chamfered edges. The external surface and the chamfered edges may include a sliding layer having one of a hard chromium or ceramic chromium plated coating, the sliding layer being applied on the first layer, the sliding layer having a thickness of between 80 and 175 microns.

Abstract: A piston ring and a method of manufacturing a piston ring for a piston of a reciprocating internal combustion engine. The piston ring comprises a body having an outer circumferential surface. A tribological coating is formed on the outer circumferential surface of the body. The tribological coating has a dual layer structure and includes a relatively hard base layer and a relatively porous top layer overlying the base layer.

Abstract: A seal assembly includes a fixed seal ring, and a rotary part having a rotary seal ring with a friction edge intended to slide against a counter-track of the fixed seal ring, a receptacle connected to a rotary shaft and provided with teeth intended to be housed inside cavities obtained in a collar of the rotary seal ring in order to drive the rotary seal ring into rotation, and a protection ring disposed around the collar and provided with recessed housings intended to be disposed inside the cavities of the collar and to house the teeth of the receptacle.

Abstract: To provide a sealing structure for a housing join of a fluid machine such as a compressor or expander, which can prevent a twist in an O ring and resultant reduction in sealing property. The sealing structure for a housing join of a fluid machine, which is used to seal a join between a first housing member 1 and a second housing member 2 that constitute a housing of the fluid machine, includes: a ring groove 14 formed in an end surface 11 of the first housing member 1, and an O ring 3 to be inserted into the ring groove 14. The ring groove 14 has an inverted trapezoid shape in cross section, and when the first housing member 1 and the second housing member 2 are joined together, the inserted O ring 3 is compressed between a bottom surface 14a and an end surface 21 of the second housing member 2 and the compressed O ring 3 comes into contact with the bottom surface 14a and both of a pair of side surfaces 14b, 14c extending upward from the bottom surface 14a at its opposite ends in a width direction.

Abstract: A metal gasket exhibiting an excellent seal effect on external foreign matter, such as salt water, and having low reaction force when required sealing pressure is low. The metal gasket, which is sandwiched between a pair of housings to seal the internal space of the housings and prevent entrance of external foreign matter between the housing and the gasket, has a straight portion, where the entire surface from an inner peripheral edge portion to an outer peripheral edge portion is a planar shape. A bent bead portion, directed obliquely outward and contacting one of the housings, is integrally provided in the outer peripheral edge portion of the straight portion. The bent bead portion functions as both an inward seal sealing the internal space and an outward seal preventing the entrance of external foreign matter between the housing and the gasket.

Abstract: The purpose of the present invention is to provide a structure which is configured so that the handling workability of a rubber-only gasket is improved and, even when a gasket body and a carrier film adhere to each other, the carrier film is easily detached from the gasket body. To achieve the object, a rubber-only gasket body and a carrier film containing a resin film detachably holding the gasket body are combined and a gasket holding portion containing a three-dimensional shape deformed along an outer shape of the gasket body is provided in a portion overlapping with the gasket body on the plane in the carrier film. The gasket holding portion containing the three-dimensional shape has a stepped shape in which one side surface of the gasket body is not held and only the other side surface and the lower surface of the gasket body are held.

Abstract: A collet includes an axially rearward end and an axially forward end; a nose portion; a body portion having an outer surface and an inner surface for engaging a shank of a tool; a plurality of slots extending from the inner surface to the outer surface; and a plurality of coolant channels disposed within the collet between the plurality of longitudinally extending slots and extending entirely from the axially rearward end to the axially forward end of the collet. The slots include a first slot extending from the axial forward end to within an intermediary zone, a second slot extending from the axial rearward end to at least the tool holder engagement zone such that the second slot does not intersect the first slot, and a third slot from within the tool engagement zone to within the intermediary zone such that the third slot circumferentially overlaps the first and second slots.

Abstract: To suppress static leakage in a seal device, a seal lip is configured for sliding contact with a seal flange that includes a thread groove exerting a fluid pumping action at a time of shaft rotation. The seal device prevents sealing fluid on the inner-machine side from leaking to the outer-machine side between a housing and a rotating shaft inserted into a shaft hole on the housing. The seal lip is attached to the inner periphery of the shaft hole and the seal flange is attached to the outer periphery of the rotating shaft. A sliding area in the seal flange in sliding contact with the seal lip is a flat surface with no thread grooves, and has an outer peripheral side area and an inner peripheral side area, which each have a thread groove exerting a fluid pumping action when the rotating shaft rotates.

Abstract: The present invention provides a shaft sealing device for being mounted on a rotating shaft. The shaft sealing device of the present invention includes a stationary member disposed on a housing of the shaft sealing device and having a first sealing surface; and a rotary member corresponding to the stationary member, disposed on the rotating shaft and having a second sealing surface opposite to the first sealing surface of the stationary member. A groove is disposed on the first sealing surface or the second sealing surface, and extends inwardly from the outer peripheral edge. When the groove extends inwardly, an end (a bottom wall) of the groove extends along a tangential direction of an imaginary circle containing the bottom wall of the groove.

Abstract: A low drag fluid seal. The fluid seal includes a lip separated from the rotor shaft, during operation, by a gap, the gap being sufficient narrow, radially, to prevent liquid from seeping through the gap at an unacceptable rate, but sufficiently wide, radially, to avoid unacceptably high viscous drag. Fluid that seeps through the gap accumulates in a recovery cavity and is recovered.

Abstract: A ring for a floating ring seal having an active face. The active face has an inner zone with a surface and an outer zone with a surface. The outer zone surrounds the inner zone coaxially. Each of the two surfaces has a structure produced with a laser.

Abstract: A shaft sealing device according to one aspect of the present disclosure includes a flow passage pipe, a rotating portion, a valve, a shaft seal, and a flow passage seal. The flow passage pipe includes a gas flow passage therein, and a through hole that communicates an interior of the flow passage with an exterior of the flow passage. The rotating portion is inserted into and held in the through hole, and rotates about a rotation axis that is preset. The valve opens and closes at least one portion of the flow passage in accordance with rotation of the rotating portion. The shaft seal is arranged along an outer circumference of the rotating portion and protrudes therefrom. The flow passage seal is arranged between the flow passage pipe and the rotating portion, and surrounds the rotating portion to have a linear contact with the shaft seal.

Abstract: A high purity fluid control valve includes a moveable control plate having a flow-through passage to enhance fluid sweep of the internal valve volume. The valve is of jet and seat type using nested orifice ridges to achieve high conductance with small actuator movement. The flow-through control plate is especially useful in fast acting proportional control applications such as gas delivery in semiconductor manufacturing.

Abstract: The invention relates to a valve apparatus for a gaseous medium, having a valve body with an opening which can be flowed through in the flow direction by the medium and is delimited by way of a circumferential face in the valve body. An orifice is arranged in a gap within the valve body such that it can be displaced perpendicularly with respect to the flow direction, in order to influence the flow through the opening. The gap divides the circumferential face into an inlet-side and an outlet-side part circumferential face. The outlet-side part circumferential face has a first edge which faces the orifice and a second edge which faces away from the orifice. The first edge is assigned at least one geometrical feature which is configured to make the first edge non-uniform.

Abstract: Drain valves with rotatable angled outlets that can be rotated without allowing flow or stopping flow through the valve, containers including the valves, and methods of using the valves, are disclosed.

Abstract: A system has a blowout preventer (BOP) assembly with first and second BOP portions. The first BOP portion has one or more rams configured to move between a first open position and a first closed position relative to a central bore. The second BOP portion has an inner cylinder with a bore, wherein the inner cylinder is configured to rotate about an axis crosswise to the central bore to move between a second open position with the bore aligned with the central bore and a second closed position with the bore out of alignment with the central bore.

Abstract: A top entry ball valve including a valve body, a valve cover, a valve stem, an assembly screw, a spring, a support sleeve, a support valve seat, a sphere, and a sealing valve seat. The valve stem passes through the valve cover and the valve body and is fixedly connected to the sphere disposed within the valve body; the valve cover is fixed to the opening of the cavity of the valve body by screws, to seal the cavity of the valve body; the sphere spherically fits with the support valve seat and the sealing valve seat; the support sleeve and the spring are provided between the support valve seat and the valve body; the spring presses the support sleeve and the support valve seat such that the support valve seat clings to the sphere; the support sleeve is fixedly connected to the valve body by the assembly screw.

Abstract: A servovalve includes a fluid transfer valve assembly comprising a supply port and a control port; a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal; and a drive assembly configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow. The drive assembly comprises a steerable jet pipe moveable by an amount determined by the control signal to cause corresponding movement of the valve spool and the jet pipe terminates at one end in a nozzle and at the other end being in fluid flow engagement with a fluid supply pipe. Movement of the valve spool is caused by fluid flowing from the nozzle to engage with the valve spool.

Abstract: A proportional valve is provided wherein the valve has an actuating element, a compressed-air connection, a working connection, and an air-removal connection. The valve also has three valve elements arranged one after the other and each can be moved in an axial direction. A first valve element is actuated by the actuating element, a second valve element is actuated by the first valve element, and a third valve element is actuated by the second valve element. In a base position, the valve elements are spaced apart, and, within the valve, a first sealing seat effective between the first valve element and the second valve element and a second sealing seat effective between the third valve element and the housing are arranged such that by varying the position of the first valve element, different switching states can be set.

Abstract: Provided herein are embodiments of a refrigerator valve and method of routing water through a refrigerator with the valve. The valve includes three valve bodies that route water in a refrigerator to different features. The middle valve body is higher than the two outer valve bodies, allowing the solenoid actuators to be mounted in a space-saving manner. The three valve bodies are linked by a central core pin that can be continuous or discontinuous such that the central core pin can provide fluid communication between all three valve bodies or divide the valve into two separate but linked valves. In a valve with a discontinuous central core pin, one valve body is isolated from the other two valve bodies so as to provide a redundant shutoff and allow a filter of a filtration unit to be replaced without having to shut off the water being supplied to the refrigerator.

Abstract: A valve assembly including a main body, a gate and an actuator. The main body defines a fluid chamber, with an inlet fluidly coupled to the fluid chamber, and an outlet also fluidly coupled to the fluid chamber. The gate has a first portion and a second portion connected to one another and both are subjected to a fluid pressure within the fluid chamber. The first portion is configured to close the outlet when the fluid chamber is pressurized due to a closing fluid force acting on the first portion. The second portion provides a counter-acting fluid force to the closing fluid force when the fluid chamber is pressurized. The actuator is coupled to the first portion or the second portion and is configured to provide a net opening force on the gate to open the outlet.

Abstract: A check valve (10) for reception in a fluid passage (5) comprises a valve seat element (1), a valve body (2), and a sleeve (3) wherein the valve body (2) is moveable in such a manner in the sleeve (3), that it rests in a first position on the valve seat element (1) and it is arranged a distance with respect to the valve seat element (1) in a second position. The valve seat element (1) contains an opening (11) which can be closed by the valve body (2) in the first position. A spring element (4) is arranged between the valve body (2) and the sleeve (3). The spring element comprises a first end (41) and a second end (42), wherein the valve body (2) is retained by the spring element (4) in the first position as long as the fluid pressure present in the opening (11) is smaller than the closing force of the spring element,(4), wherein the first end (41) of the spring element (4) is connected to the valve body (2).

Abstract: A pressure equalization valve comprises a first pressure cylinder, a second pressure cylinder, an aperture, and a stationary member. The stationary member is located between the first pressure cylinder and the second pressure cylinder. The second pressure cylinder is located within the aperture. A primary piston is located within the first pressure cylinder and a secondary piston is located within the second pressure cylinder. A stem is directly connected to the aperture and the primary piston. The stem includes a fluid passage between the first pressure cylinder and the second pressure cylinder. When a pressurized fluid is introduced into the first pressure cylinder, the pressurized fluid pushes the primary piston and the stem to open the aperture in a linear direction, the pressurized fluid travels to the second cylinder through the fluid passage and pushes against the aperture in the same direction as said first piston further opening the aperture.

Abstract: A valve seat assembly for use in a fluid control valve. The valve seat assembly includes a pad holder and a support ring. The pad holder includes a support body configured to support a seat pad and a plurality of alignment struts projecting radially outwardly from the support body. The support ring extends around the radially outer perimeter of the alignment struts. The pad holder slides into and out of an operative position in the support ring.

Abstract: A method for releasing a fluid from a pressure vessel assembly, the method including the steps of providing:—a pressure vessel; a piezo electric device; and an electric field generator; arranging the piezo electric device in a sealed relationship with a part of the pressure vessel, thereby providing the pressure vessel assembly, providing a fluid contained within the pressure vessel assembly under pressure, and using the electric field generator to apply an electric field to the piezo electric device, such that the piezo electric device fails, thereby releasing the fluid from the pressure vessel assembly.

Abstract: Apparatus is provided for electro-mechanically fluctuating the position of a ball valve/ball valve stem. The said apparatus can electronically turn the ball valve smoothly and effectively to any position in response to the input signal provided by a microcontroller interfacing with a motor driver controller. The apparatus control inputs will range from: voice command, push buttons, motion sensor, android, and/or touchscreen. An input means to send signals to the microcontroller, which send a signal to the stepper motor driver circuit, which send a signal to control the Stepper motor, which will maneuver a machined made driveshaft to operate the momentum of the ball valve/ball valve shaft for accurate and precise liquescent output.

Abstract: A servo valve for an actuator comprises a housing, a sleeve provided within the housing comprising an axis (A) and having a plurality of metering holes for communication with a cavity within. A metering rod extends within the cavity for metering flow of pneumatic fluid through the metering holes. The metering rod is coupled to a drive unit for axial movement within the cavity, the drive unit comprising a drive unit housing, a solenoid and an adjustable core. The adjustable core comprises a threaded first portion having a thread and a second portion. The thread of the first portion engages a thread extending through the drive unit housing for adjustment of the relative position of the adjustable core with respect to the solenoid.

Abstract: An electromagnetically actuated piston slide valve includes a piston slide arrangement with a piston which is axially displaceable for regulating a free cross section of a fluid passage of the valve. The piston slide arrangement contains a first magnetic armature connected to the piston and a second magnetic armature which is axially displaceable with respect to the piston. The piston is axially displaceable against the force of a first biasing spring by generating an electromagnetic field through energizing a coil. A second biasing spring rests against the first magnetic armature and the second magnetic armature, so, in the unenergized state of the coil, the piston takes a predetermined position by axial displacement due to the force of the first biasing device against the force of the first biasing device. A permanent magnet generates an attractive force between the first and the second magnetic armature which counteracts the second biasing spring.

Abstract: Disclosed are an automatic continuous operation robot for laying large-diameter pipelines and an operating method therefor. The operation robot comprises a platform, a main frame (1), an operation room, a navigation subsystem, a pipe grabbing and conveying subsystem (3), a pipe end face pre-treatment subsystem (4), an on-line measurement subsystem, a pipe supporting subsystem, a welding and welding quality inspection subsystem (5), and a control system. The operating method comprises: first detecting and grabbing a pipe, then performing groove machining on the pipe, fitting the welding end faces of the current pipe and a previous pipe, then putting down the pipe, finely adjusting and fixedly connecting the two pipes, and finally, welding the two pipes. The automatic continuous operation robot for laying large-diameter pipelines has a high degree of automation and high working efficiency, and the laying period is short.

Abstract: A pipe clamp includes two clamp parts, each clamp part having a curved pipe clamping portion, and an anchoring portion formed at or near a first end of each pipe clamping portion to anchor the pipe clamp to a profile element. The anchoring portion is formed as a leg with a hammerhead. A flange is formed at a second end of each pipe clamping portion. The flanges of the clamp parts are adapted to be positioned opposite each other. A tightening member is associated with the clamp flanges for tightening them together. The curved pipe clamping portion has a varying stiffness along the curve length between the first end and the second end of the pipe clamping portion, where on average the stiffness of the pipe clamping portion decreases or increases from the first end towards the second end.

Abstract: A positioning clip is removably attachable to a fastener of a quick-release fastener assembly on an access panel of an aircraft when the access panel is removed from the aircraft. The positioning clip holds the fastener in its full out position relative to the exterior surface of the access panel removed from the aircraft. The positioning clip attached to the fastener maintains the perpendicular orientation of the fastener relative to the exterior surface of the access panel and relative to the associated receptacle for the fastener on the structure of the aircraft when the access panel is reattached to the structure of the aircraft.

Abstract: A telescoping stand for supporting an elevated object can include a first support member, a second support member, and a third support member. The second support member can be configured to telescopically engage with the first support member. The locking element can be configured to lock the first and second support members against relative telescopic movement to provide any one of a plurality of telescoped heights. The third support member can be adjusted relative to the first and second support members to support the elevated object at any one of a plurality of object heights above the first and second support members.

Abstract: A cable hanger includes a first cable support portion, a second cable support portion, and a hanger support portion. The first cable support portion is configured to hold one or more first cables. The second cable support portion is configured to hold one or more second cables. The hanger support portion is configured to retain the first cable support portion and the second cable support portion. The first cable support portion, the second cable support portion, and the hanger support portion are formed from a single piece of material.

Abstract: A gas valve with two nozzles includes a valve body having an inlet, a primary outlet and a secondary outlet; a rotatable valve core is disposed inside the valve body; a valve rod inserted into the valve body; a first nozzle connected to a first outlet end of the primary outlet; and a second nozzle connected to a second outlet end of the secondary outlet; wherein, a connection chamber with a top opening for receiving the valve rod is mounted on the upper portion of the valve core; a ventilation chamber in communication with the primary outlet is defined in the lower portion of the valve core, the ventilation chamber having a side wall; a first high fire hole and a low fire hole both for communication between the inlet and the primary outlet are defined on the side wall of the ventilation chamber; and a second high fire hole for communication between the inlet and the primary outlet and a supplementary fire hole for communication between the ventilation chamber and the secondary outlet are defined on the side w

Abstract: A pipe coupling includes a clamp housing and a seal assembly mounted in at least one end of the clamp housing. The seal assembly includes an outer sealing layer connected to an inner sealing layer with interlocking mating structures that abut against each other in radial and axial directions and prevent the inner and outer sealing layers from separating from each other in the radial and axial directions.

Abstract: A coupling for joining pipe elements has segments surrounding a central space with cusps which engage lobes of a seal to maintain the segments in spaced apart relation in a preassembled state. While the coupling is in the preassembled state the pipe elements may be inserted into the central space without disassembling the coupling, and portions of the seal adjacent to attachment members on the segments seat within a channel defined by the segments between the cusps. When the seal is compressed between the segments and the pipe elements to form a joint the seal deforms so as to withdraw a center leg of the seal from the flow path defined within the pipe elements.

Abstract: A flow control device for conveying a fluid therethrough includes a port having an engaging end configured for engagement with a tube fitting and an inner surface defining a passageway configured to provide fluid communication through the flow control device. A shoulder is formed on the inner surface of the port adjacent the engaging end. The shoulder defines a first seating surface and a second seating surface. A protuberance is formed on one of the first seating surface and the second seating surface.