Abstract: Provided is a first seal member that comprises a body that defines an aperture having a perimeter that extends along an axis in a first direction from the body. The first seal member also includes a first sealing feature that is immediately adjacent at least a portion of the perimeter of the aperture that extends along a path in a second direction that is oblique to the first direction along which the aperture extends. In certain embodiments, a second seal member may also be provided that comprises a body that includes a perimeter wherein said perimeter of said aperture of the first seal member is complimentary shaped for receiving the perimeter of the second seal member.

Abstract: A ring seal for a shaft includes a plurality of arc-shaped ring segments, each of the plurality of ring segments having a radially outer face, a radially inner face, a first axial side face, a second axial side face, a first end and a second end, a spring holding the plurality of arc-shaped segments in an arch-bound configuration, and at least one circumferential ramp in the radially inner face of each of the plurality of ring segments configured to generate an air cushion when a shaft rotates inside the ring seal. Also a ring sealing system including the ring seal and a shaft.

Abstract: A sealing element for sealing a high-pressure side from a low-pressure side at a rotating shaft, in particular in a pump, with a supporting ring configured to be arranged on a stator surrounding the shaft and from which a first annular membrane protrudes facing in the direction toward the shaft. From the first annular membrane, a second annular membrane protrudes facing in the direction toward the shaft. The first annular membrane is formed longer than the second annular membrane as viewed in the axial direction of the shaft, and the second annular membrane is configured with a sealing edge which is to be arranged lying on the shaft.

Abstract: A gasket, which is configured as a single block (1), includes a guide ring (2) made of a tough material, at least one dynamically loaded sealing lip (3, 4) and at least one statically loaded sealing lip (5), wherein the dynamically loaded sealing lip (3, 4) and the statically loaded sealing lip (5) are formed of a rubber elastic material and are connected with the guide ring (2), wherein at least one first (3) and one second dynamically loaded sealing lip (4) are connected with the guide ring (2), wherein the first dynamically loaded sealing lip (3) is configured for sealing a medium (6) from a space (7) to be sealed and the second dynamically loaded sealing lip (4) is configured for sealing out contaminants (8) from the surrounding environment (9), and wherein the first sealing lip (3) is placed behind the second sealing lip (4), viewed from the surrounding environment (9) in the direction of the space (7) to be sealed off.

Abstract: A seal connector device (1) for achieving a temporary fluid-tight connection between a rotating shaft (17) rotatably connectable to a structure and said structure, wherein the seal connector device (1) comprises said rotating shaft (17) which defines a rotational axis (S-S); a sealing disc (19) extending radially from said rotating shaft (17); at least one first cylinder-piston assembly (100) comprising a cylinder (9) and a piston (21) slidable into said cylinder (9), said piston (21) having a sealing surface (22) facing the sealing disc (19), and the sealing disc (19) having a sealing counter-surface (34) facing the sealing surface (2), said sealing surface (22) being suitable for abutting against said sealing disc (19); said piston (21) being configured to be selectively operated between: a sealing position in which the sealing surface (22) of the piston (21) is at a minimum distance or in contact with the sealing counter-surface (34) of the disc (19), in order to achieve a temporary fluid-tight connection

Abstract: An axial shaft seal for sealing a shaft against a housing of a combustion engine comprises a stiffening section and a sealing element connected to the stiffening section, having a sealing lip which is established for sealing interaction with a counter-running element which is connected to the shaft and runs radially. In the assembled state, a sealing contact exists exclusively between an end section of the sealing lip and the radial counter-running element. A plurality of channels is arranged on the side facing towards the counter-running element and over the periphery of the sealing lip, or on the counter-running surface and over the periphery of the counter-running element, in which a pressure build-up is caused when the shaft is rotating.

Abstract: An annular seal may include a seal body configured for disposing around a rotor, a plurality of grooves and a plurality of projections formed on an inner circumferential surface of the seal body, and a plurality of dams circumferentially disposed on a first surface of the seal body. The first surface may extend radially from the inner circumferential surface of the seal body. The plurality of dams may be configured to increase a pressure of a working fluid contacting the plurality of dams such that the increase in the pressure may center the annular seal about the rotor.

Abstract: Provided is an eccentric valve and a manufacturing method thereof. The eccentric valve has a tri-offset structure, and comprises: a valve body, a valve seat, a valve unit, a valve stem and a seal. The disc-shaped valve unit is disposed in a through hole centered in the valve body. The valve stem penetrates shaft holes on the valve unit and the valve body. Rotating the valve stem causes rotation of the valve unit for closing/opening the through hole. The valve seat is mounted on the inner surface of the through hole, and the seal is mounted on the outer surface of the valve unit. When the through hole is closed, the valve seat and the seal are mutually engaged. The inner surface of the valve seat is part of an oblique cone. The seal is a centrosymmetric ring, of which the outer surface is cambered.

Abstract: A fluid control valve includes: a drive section; body provided with first port, second port, and valve seat; and valve element formed columnar-shaped and coupled with the drive section, and the valve element includes annular sealing protrusion annularly protruding from end face located on side facing the valve seat, the sealing protrusion being provided at leading end with annular sealing portion to be pressed against the valve seat for sealing and at least the annular sealing protrusion is made of fluororesin. The valve element is configured such that the annular sealing portion is radially displaced with displacement amount of no more than 6.175 ?m when the annular sealing portion is pressed against the valve seat by the drive section so that abrasion caused by deformation of the valve element in valve closing is restrained and generation of particles is prevented.

Abstract: A check valve includes a hollow cylindrical valve body including an inclined rim at a first end, an annular section on an inner surface and tapered to a second end, and an annular groove on an outer surface; a hollow cylindrical outlet member including an axial channel, openings around an end surface, an internal annular trough, an annular flange extending outward from the trough of the outlet member, and an annular groove on an outer surface; a moveable member including an annular groove on an outer surface, a stem distal the groove of the moveable member, and an annular trough on an inner surface; a ring including an axial channel and openings around the channel; and a biasing member having a first end anchored in the trough of the moveable member and a second end anchored in the trough of the outlet member.

Abstract: A valve device for a fuel vapor system includes: a case having a valve seat; and an umbrella valve having a valve portion that provides a valve closed state by contacting the valve seat and provides a valve open state by separating from the valve seat, and an outer edge portion that is formed on a radially outer side of the valve portion and restrained by the case. The valve portion is elastically deformed so as to be convex by a predetermined amount in one direction in an axial direction in the valve closed state; and the valve portion is elastically deformed so as to be convex by greater than the predetermined amount in the one direction in the valve open state.

Abstract: Gas shut-off valve with thermal safety comprising a gas inlet, a gas outlet, a body comprising the inlet and the outlet and defining an intermediate opening between the inlet and the outlet, and a shut-off element. The body comprises a housing arranged on the intermediate opening, the shut-off element being arranged in the housing and the valve comprising a cover arranged on the housing and attached to the body, a ferromagnetic element arranged in the housing fixed to the shut-off element and comprising a predetermined Curie temperature, a spring associated with the shut-off element and with the cover, and a permanent magnet attached to the cover. The ferromagnetic element is arranged between the permanent magnet and the shut-off element.

Abstract: A gas exchange valve of an internal combustion engine may include a valve plate and a valve stem. A nickel-phosphorus layer may be disposed on at least the valve stem. The nickel-phosphorus layer may have a phosphorus content that is greater than 10 percent by volume. A method and apparatus for coating a gas exhaust valve are also disclosed.

Abstract: A flow control valve includes a body having a body bore oriented coaxially with a longitudinal axis of the body and a seat member extending into the bore. A valve member is slidably disposed in the bore and oriented coaxially with the longitudinal axis of the body. The valve member includes a non-circular geometrically shaped head having a bore. A drive adapter includes a head receiving cavity slidingly receiving the geometrically shaped head of the valve member and preventing axial rotation of the valve member. A stepper motor is connected to the drive adapter, the stepper motor incrementally rotating a shaft engaged with the bore of the valve member. First and second equal diameter pistons of the valve member provide pressure balanced valve member operating positions.

Abstract: A valve, in particular proportional pressure regulating valve, having a valve piston (12) which is guided in longitudinally movable fashion in a valve housing (10) and which can be actuated by means of an operation device (14), wherein the valve housing (10) has multiple fluid ports (P, A, T) and wherein, in one movement position of the valve piston (12), a fluid-conducting connection is produced between a pressure supply port (P) and a working port (A), and in another movement position, a further fluid-conducting connection is produced between the working port (A) and a tank port (T), is distinguished by the fact that the respective pressure difference that arises between the working port (A) and the tank port (T) as flow passes through the further fluid-conducting connection acts, by way of an actuation device (30), on the valve piston (12) such that the latter passes from a stop position (32), proceeding from which the further fluid-conducting connection is substantially shut off, into a fully open opening

Abstract: A coil assembly for an electromagnetic actuator of a fluid injection valve includes a solenoid having a central axis, a first permanent magnet, and a second permanent magnet. A fluid injection valve including such a coil assembly is also disclosed.

Abstract: A high pressure solenoid valve is provided and includes a valve housing connected to a body, having an entrance port and an outlet port to form a main flow path. The main flow path opens by engaging plungers A and B, disposed at a lower side of the valve housing, by magnetizing a fixed core disposed at one side of the valve housing by magnetic force of a solenoid coil wound around a circumference of the valve housing. The main flow path closes using a main spring elastically disposed between the fixed core and the plunger B. The fixed core is divided into a second fixed core positioned at one side of the valve housing by a disk cover coupled to the valve housing, and a first fixed core to reciprocate from the second fixed core toward the plunger B.

Abstract: A differential control valve including a housing having an interior surface defining an internal chamber with a central axis. The valve further includes a first port; a second port and a third port, each in communication with the internal chamber. A first valve seat is disposed along the interior surface of the housing circumscribed about the central axis and a second valve seat is circumscribed about the first valve seat. A sealing member defines a sealed position and an open position with respect to the valve seats. A spring member biases the seal member toward the open position and is disposed between the sealing member and the interior of the housing.

Abstract: A valve assembly comprises a valve (22) including a valve body (24) and a movable valve closure member (26). The valve assembly also includes a manifold (12) having a bore (20) with a valve opening through which the valve (22) is received into the bore (20), and at least one process fluid pathway defined within the manifold (12) in fluid communication with the bore (20). The valve (22) includes a proximal end section arranged to close the valve opening (23) and an opposing distal end located within the bore (20) inwardly of the proximal end. The valve closure member (34) is arranged to open and close the at least one fluid pathway. In addition a primary seal is located between the valve body (24) and the manifold (12) to seal the valve opening (23), with a secondary seal being located inwardly of the primary seal along the bore (20) relative to the valve opening (23) arranged to create a seal between and the valve body (24) and the bore (20) to isolate the primary seal from the first fluid pathway.

Abstract: Switching valve for controlling a mass flow in a cold or hot circuit. The valve includes a valve housing having a feed opening and a discharge opening; a valve piston which has a valve-closure member directed towards the discharge opening and which, in a closed position, abuts a valve seat of a through-bore between the feed opening and the discharge opening; a pilot valve having a pilot bore in the valve piston, which bore opens into the through-bore and traverses the valve piston; a path-generating device having an actuatable ram accommodating a closure member which closes the pilot bore and, with the closure member, can be moved into an opening position which opens the pilot bore; and a bypass duct formed between the feed opening and the pilot bore. At least one connection element forcibly transfers at least some of the stroke movement of the ram onto the valve piston.

Abstract: A double paired water key has a handle with two opposite ends, a shaft extending from one end of the handle, two opposite ends upon the shaft, and at least two concentric openings extending into each end of the shaft where a user may select a pair of openings on the shaft extending from the handle. The openings have various internal shapes, preferably square, and at least two different widths. In each pair of openings, the opening with the least width has its position inwardly from the remaining opening, towards the handle. Each shaft has a tip with at least two sizes of opening. The two ends of the shaft provide four sizes of opening readily selected by a user. Each opening has rounded corners.

Abstract: A valve actuator for a valve has an electric motor which comprises a rotor and a stator, and further a magnetic detent brake with at least one detent magnet for holding the rotor in a detent position. The least one rotor magnet is arranged on the rotor and co-operates with the detent brake.

Abstract: A system receives a plurality of data samples associated with a control valve with each of the plurality of data samples associated with a setpoint and a position. A first subset of the data samples that are in a control zone associated with normal operation of the control valve is determined. In a case that a second subset of the data samples are determined to be (i) not in the first subset and (ii) close to a minimum position of the plurality of data samples and (iii) have setpoints less than their associated positions, an alert associated with a low obstruction is indicated. In a case that a second subset of the data samples are determined to be (i) not in the first subset and (ii) close to the maximum position of the plurality of data samples and (iii) have setpoint greater than their associated position, an alert is indicated.

Abstract: A valve includes a body with an inlet at a first end of the body, and an outlet at a second end of the body. A first electrically resistive heating element is located in the inlet and heats a first fluid source to a temperature above 0 degrees C. A second electrically resistive heating element is located in the outlet and heats a second fluid source to a temperature above 0 degrees C.

Abstract: An isolation valve is provided, along with removable shield insert assemblies for an isolation valve. In one embodiment, a shield insert assembly for an isolation valve is provided that includes a graphite first shield insert having a flat ring shape. The first shield insert has a circular outer diameter. An elongated aperture is formed through the first shield insert. At least two fastener holes are formed through the first shield insert configured to couple the first shield insert to a first shield support.

Abstract: A pipelayer includes an undercarriage, a boom movable relative to the undercarriage in a first lateral direction, and a counterweight movable relative to the undercarriage in a second lateral direction opposite the first lateral direction and ranging between a deployed position and a retracted position. A counterweight position sensor is configured to determine a current position of the counterweight and generate a counterweight position signal, and an operator interface is operably coupled to the counterweight position sensor and configured to display counterweight position information based on the counterweight position signal.

Abstract: A pipeline including an accessory such as a flowline end termination or an in-line tee is lowered to the seabed and a mudmat foundation is subsequently lowered toward the seabed for subsea docking with the accessory to provide a permanent foundation support for the accessory. Once docked and with a mudmat of the foundation landed on the seabed, weight loads of the accessory structure and the attached pipe are transferred to the mudmat to provide a permanent foundation for the accessory structure. Before and during installation of the mudmat foundation, the pipe may be allowed to become embedded in the seabed. Temporary interim support such as buoyancy may be provided to the accessory to limit embedment into the seabed.

Abstract: Retriever systems for marine geophysical survey cables. At least some of the illustrative embodiments are methods including causing a submerged sensor streamer to surface. The causing may be by moving a piston within a cylinder of a housing coupled to the sensor streamer, the moving of the piston responsive to pressure exerted on a face of the piston as the sensor streamer reaches or exceeds a predetermined depth, wherein the pressure exerted on the face of the piston overcomes a latching force tending to hold the piston in place at depths above the predetermined depth; and responsive to the piston overcoming the force that latches the piston releasing a ballast weight, wherein prior to the releasing the ballast weight is at least partially held in place based on position of the piston, and the releasing responsive to movement of the piston.

Abstract: A cable clip comprises a body providing a cable receiving portion at one end thereof and a pin extending away from the longitudinal axis of the body. The cable receiving portion is v-shaped in cross-section, and the open side of the v-shaped section extends in a direction of the pin.

Abstract: In a clip, first and second attachment portions are coupled by a coupling portion in an open state in which a seatback spring is able to pass between the first and second attachment portions in the radial direction of the seatback spring. The first and second attachment portions swing in mutually engaging directions. The first attachment portion is formed with a first placement portion, and the second attachment portion is formed with a second placement portion. The seatback spring can accordingly be placed between the coupling portion and either the first placement portion or the second placement portion. In this placed state, the seatback spring is retained in the clip by engaging an engagement claw of the first attachment portion with a peripheral edge portion of an engagement hole of the second attachment portion, enabling fixing to an attachment portion of a lower frame.

Abstract: A stackable routing clip for installation on machinery using a weld tool. The stackable routing clip has a body and at least one wing section. A weld projection extends from a lower face of the body. Each wing section may extend from the body and include a routing port that receives the insertion of a cable tie used to secure cables to the stackable routing clip. The stackable routing clip is configured so that a plurality of the stackable routing clips may be grouped together to form a stack. The clips may be stacked together in a dispenser that is used to dispense of individual clips when a clip is to be welded by the weld tool to the machinery. The weld tool may melt the weld projection and plunge the clip into the resultant molten metal for a quick and strong weld.

Abstract: A pipe insulation product including a core of insulating material and a laminate. The core includes a cylindrical outer surface; a cylindrical inner surface; and a wall extending between the cylindrical outer surface and the cylindrical inner surface. The laminate includes a metallized polymeric film sheet layer forming an inner layer, a scrim, a porous media sheet layer, and a polymeric film sheet layer forming an outer exposed layer bonded together via an adhesive. The laminate is coextensive with and bonded to the cylindrical outer surface of the core and the laminate and core are flexible so that the core and laminate can be opened, placed about a pipe, and closed without degrading the laminate.

Abstract: A telescopic waterproof tube structure includes at least two connection tubes nested with each other, and a locking structure for locking two adjacent connection tubes that are made of an inner tube sleeved inside an outer tube. The locking structure includes an inner reducing sleeve fixed on an end of the outer tube, an outer reducing sleeve adjustably connected to the inner reducing sleeve, and a locking assembly provided between the inner reducing sleeve and the end to be connected of the inner tube. The locking assembly moves axially towards the inner reducing sleeve under the action of the outer reducing sleeve to clamp the inner tube on said inner reducing sleeve. A first sealing structure is provided between the inner and outer reducing sleeves. An activity seal slot surrounding the inner tube forms between the outer reducing sleeve and the locking assembly and accommodates a second sealing structure therein.

Abstract: A sprayer hose for a fluid delivery device includes a waterway tube having an outer surface. The sprayer hose further includes at least one energy wire extending helically around the outer surface of the waterway tube and a covering layer positioned outwardly of the waterway tube and the at least one energy wire.

Abstract: A retrofit kit for use with a water-holding structure, the kit having a bonding conductor with a body portion configured to reside within a component attached to the water-holding structure. The bonding conductor includes an extension portion configured to extend outwardly from an outer surface of the component. The retrofit kit includes a strain relief fitting configured to receive the extension portion of the bonding conductor, and to couple with the component attached to the water-holding structure. The retrofit kit also includes a conductor fitting configured to attach to the extension portion of the bonding conductor and to attach to a conductive system of the water-holding structure, providing an electrical connection between the bonding conductor, or the water therein, and the conductive system. The bonding conductor providing equipotential bonding for the water contained in the water-holding structure.

Abstract: A shock pump adapter includes a communication device configured to include an inner tube and an outer tube. The inner and outer tubes are rotatable with respect to one another. A valve insert fixes to one of two ends of and is rotatable with the inner tube and includes a first channel fluidly connecting to a hollow of the inner tube. An air inlet joint fixes to the other of the two ends of and is rotatable with the inner tube. The air inlet joint includes a second channel fluidly connecting to the hollow of the inner tube and a one-way valve disposed in the second channel. An air outlet joint connects to and is disposed at the other of the two ends of the communication device. The air outlet joint fixes to and is rotatable with the outer tube.

Abstract: A pipe connection for conducting a pressurized fluid, includes two tubular connection pieces for a conical clamping connection, the connection pieces being screwed together by a union nut while one connection piece is plugged inside the other. Each connection piece has a conical sealing surface which sealingly rests against the other, and an annular groove is provided in one of the sealing surfaces. The union nut is slit on the collar side in order to enable the pipe connection to also conduct a fluid with an alternating or varying temperature.

Abstract: A conduit fitting of the type having first and second threaded fitting components and at least one conduit gripping device, further includes a stroke limiting member that allows the fitting to be pulled up by applying a predetermined torque. In one embodiment, the stroke limiting member may be a non-integral torque collar and in another embodiment the stroke limiting member may be two engaging surfaces integrally formed with the fitting components. Alternatively, the fitting may also be pulled up by turns. In still another embodiment, a stroke limiting member is provided that may be used to enable a fitting that is designed to be pulled up by turns to also be pulled up by torque. The stroke limiting member facilitates many remakes of the fitting, including remakes by torque.

Abstract: A variable cross-section tube adapter (VCSTA) is described herein. The VCSTA is configured to decrease bending stresses in high performance oval or circular tubes. Specifically, the VCSTA is configured decrease bending stresses in high performance oval or circular tubes between substantially the end of the tube and the housing and/or base to which the tube is coupled. A variable cross-section double wall tube (VCSDWT) profile is also described herein. For instance, VCSDWT may comprise an integral curved profile (bell shape) portion.

Abstract: A device for containment of fluids escaping from a pipe flange, comprising a casing extending between a first endplate and a second endplate, the casing having an exterior and interior; the first endplate having a first flange extending away from the first endplate exterior to the casing and the first flange surrounding a first pipe receiving opening; the second endplate having a second flange extending away from the second endplate exterior to the casing and the second flange surrounding a second pipe receiving opening; the first flange having a first interior surface and a first seal disposed around the first interior surface for sealing the casing to pipe and the second flange having a second interior surface and a second seal disposed around the second interior surface for sealing the casing to pipe; the casing being formed of sections connected together; a plurality of first supports projecting from the first endplate and buttressing the first flange and a plurality of second supports projecting from the

Abstract: A hydraulic hose fitting is basically provided with a first connection portion and a second connection portion. The first connection portion is configured to be attached a hydraulic device. The first connection portion has a first fluid passageway with a first center longitudinal axis and a fastener structure including one of a fastener receiving hole and an attachment stud that has a second center longitudinal axis that is non-perpendicular and non-coaxial with the first center longitudinal axis. The second connection portion is configured to be attached to a hydraulic hose. The second connection portion has a second fluid passageway fluidly communicating with the first fluid passageway.

Abstract: A working fluid output device for a temperature control system includes an output head, a fitting module and a quick release mechanism. A bottom plate of the output head and a top plate of the fitting module each have an installing surface and a through hole. The quick release mechanism has first and second units disposed on the two installing surfaces, respectively. The first unit includes an operable member having a positioning portion and configured to be operated by a user to move the positioning portion move between lock and unlocked positions to enable that the first unit is detachably coupled with the second unit and the fitting module is detachably attached to the output head in a way that the installing surfaces face each other and the through holes communicate with each other.

Abstract: The quick-acting coupling for the disconnectable connection of two pipelines (C1, C2) comprises a female element (A) equipped with: a locking device (6) slidingly mounted in a body (1) of the female element (A) and equipped with a first retaining means. The locking device (6) is movable between: a first position in which the first retaining means can cooperate with a corresponding second retaining means (102) of a male part (B), a second position in which the locking device allows the male part (B) to release itself from the female element (A), a safety device able to keep the locking device (6) in its first position when the male part (B) is in the configuration fitted in the female element (A). When the locking device is in its first position, an action on the safety device releases the locking device from its first position.

Abstract: A fitting connectable to an end portion of a pipe generally includes a tubular insert member configured to be received at least partly within the end portion of the pipe, and a retention member coupled to the insert member and configured to be received at least partly within the end portion of the pipe. The retention member operates in conjunction with the insert member to engage the end portion of the pipe and impart an increased force against an inner wall of the pipe in response to forces tending to separate the fitting from the end portion of the pipe. The insert member includes a plurality of reinforcement ribs formed on its inner surface which provide support to the insert member and help prevent damage thereto from transverse bending forces applied during installation.

Abstract: A hydraulic cylinder pipe is provided that includes longitudinally aligned first and second pipe sections, and a hydraulic cylinder joint coupling the first pipe section and the second pipe section. The joint includes a female and a male collar; a plurality of circumferentially distributed L-shaped grooves formed in one of the collars, each having an introduction section and a locking section with an abutting edge; a corresponding plurality of circumferentially distributed protruding disks provided in the other one of the collars; and a circumferential collar stopping shoulder associated with one of the collars. The male collar is inserted in the female collar with the collar not associated with the stopping shoulder abutting against the stopping shoulder and each disk engaged in the locking section of a corresponding groove and abutting against the abutting edge thereof. A hydraulic cylinder joint for a hydraulic cylinder including two pipe sections is also provided.

Abstract: A coupler device for coupling first and second pipe bodies and a method for using the coupler device are disclosed, the coupler device including—a first connector hub configured to be connected to the first pipe body; a second connector hub configured to be connected to the second pipe body; a clamp configured to clamp the first and second connector hubs together, the clamp comprising two or more clamping members; and two or more clamping rods, along which the clamping members are configured to be displaced, wherein the at least two clamping rods are rigidly connected to the first connector hub.

Abstract: An apparatus including: a sealing case having a branch hole formed in a first separate case and extending in the radial direction of an existing pipe; and a rubber packing for sealing a gap between the sealing case and the existing pipe, wherein: the first separate case has a flange for attachment and removal of a boring machine; the sealing case reciprocates in a pipe axis direction; the rubber packing forms; a first sealed area surrounding a portion of the sealing case for shutting the branch hole a second sealed area being adjacent to, sealed against, displaced from the first sealed area in the pipe axis direction, and sized so as to be able to shut the opening bored by a cutter; and a tolerance space, into which a second seal ring escapes, is formed between a packing attachment groove and the second seal ring.

Abstract: A polymer composite grouting method for blocking leaking and sand inrush of underground pipeline includes steps of: (1) determining a leaking and sand inrush position of an underground pipeline; (2) drilling a plurality of grouting holes in a ground surface; (3) placing two grouting pipes into each of the grouting holes, binding a film bag at a bottom of one of the grouting pipes; (4) injecting a polymer grouting material via one of the grouting pipes to form a polymer sand stabilizing body; (5) extruding water to accumulated in the pipeline; (6) installing a plurality of geotextile bags at the pipeline section displacement; (7) injecting the polymer material into the geotextile bags for blocking the leakage; and (8) filling the pumping area out of the pipeline. The present invention provides a practical technical measure to treat the leaking and sand inrush of the underground pipeline under complicated geological condition.

Abstract: A pigging system has an apparatus for launching one or more pigs into a process flow. The apparatus has a housing with a chamber, an inlet, and an outlet. The inlet receives the one or more pigs into the chamber and is sealable. The outlet is in sealed communication with the process flow and passes the one or more pigs out of the chamber to the process flow. A portion of the chamber is in communication with the process flow. A guide disposed in the chamber guides the one or more pigs in the chamber, and an actuator mechanically feeds the one or more pigs guided by the guide to the outlet.

Abstract: The subject matter of the invention is a lining hose as a composite hose for lining a pressure pipe to be renovated, comprising at least one first layer and a second layer which adjoins the first layer, the first layer forming a substantially fluid-tight and/or gas-tight diffusion barrier and the second layer being a textile fabric soaked in a resin and being provided for an all-over adhesive connection to an inner wall of the pressure pipe to be renovated, the lining hose being flexible in a state in which the resin has not cured. The second layer is at least 3 mm thick, the textile fabric and the resin being selected such that the lining hose forms a self-supporting pipe in a state in which the resin has cured. The invention also relates to a method for renovating a pressure pipe using such a lining hose and a corresponding renovated pressure pipe.