Abstract: A limb for a breathing circuit manufactured from very thin walled polymer materials has an elongate axial reinforcing spine lying freely inside the conduit and fixed to each end connector. The spine is laterally compliant but axially stiff. The spine provides resistance to tensile and compressive loads on the conduit, including that induced by prevailing internal pressures.

Abstract: An insulated duct includes an inflatable jacket surround the duct. The jacket is inflated, preferably with air traveling in the duct, to create a static condition in the air space formed by the jacket to provide additional insulation for the duct. When the jacket is combined with additional insulation and low emissivity material, the R value of the duct can be increased in a more efficient manner from manufacturing and cost viewpoints.

Abstract: A box protector 21 for protecting the inner surface of a box 11 of a threaded joint for pipes having a female threaded portion and a shoulder surface 14 with the shoulder surface being sloped by an angle ? with respect to the direction perpendicular to the pipe axis has a male threaded portion 22 which threadingly engages with at least a portion of the complete threads of the female threaded portion of the box and a shoulder surface 21b which sealingly contacts the shoulder surface 14 of the box to form a first seal portion, and the shoulder surface 21b is sloped by an angle ?P (?P>?) with respect to the direction perpendicular to the pipe axis. The protector has a circumferential groove 30 in its outer peripheral surface in the vicinity of the shoulder surface 21b and an elastic seal ring 28 which contacts the shoulder surface 14 of the box 11 and forms a second seal portion.

Abstract: The invention relates to an unbonded flexible pipe for subsea transportation of fluids. The pipe has a length and comprises a tubular inner sealing sheath defining a bore and an axis of the pipe. In a pipe length section it comprises a second sealing sheath surrounding the inner sealing sheath and forming an annulus between the inner sealing sheath and the second sealing sheath. The annulus provides a primary maintaining passage along the length of the pipe length section with a first and a second end. The pipe comprises at least one secondary maintaining passage along the length of the pipe with a first and a second end. The secondary maintaining passage is arranged with an axial distance which is larger than the axial distance of the inner sealing sheath.

Abstract: An expansion joint in a vertical channel suitable for conducting hot particles. The expansion joint includes an upper channel portion including a lower end portion with a lower edge. A lower channel portion is sealingly connected by a flexible element connected on an outer side of the vertical channel. The lower channel portion includes an upper end portion with a horizontally extending upper plane. In a predetermined vertical level range, the upper end portion telescopically overlaps the lower end portion in a spaced relationship, to permit relative axial and lateral movements of the upper channel portion and the lower channel portion, whereby the upper plane is at a higher level than the lower edge. A sealing ring, including mutually connected sealing blocks positioned on an outer circumference of the lower end portion, is arranged on the upper plane.

Abstract: Embodiments of the present invention include a system for locating and restoring service lines during pipeline restoration. According to some embodiments of the present invention, the system includes a movable chart, a plug with a marking magnet, and an attachment part. In some embodiments of the present invention, the movable cart is deployed along the inside of a pipeline. In some embodiments, the attachment part is movably coupled to the movable cart. The attachment part is configured to install a plug into the service line at a location where the service line intersects the pipeline, according to some embodiments. In other embodiments, the attachment part is configured to mark the location of the plug in the service line and remove the plug from the service line to restore a fluid connection between the service line and the pipeline.

Abstract: The formation of a resin layer, a metal layer and an insulating resin layer on an outer surface of a corrugated metal pipe for flowing a fluid provides a flexible pipe, whose corrugated metal pipe does not suffer from having apertures even with spark discharge by induced lightning.

Abstract: A system includes an inlet pipe configured to convey a fluid and a buffer volume configured to buffer the fluid. The buffer volume includes a smallest diameter tube having a smallest diameter, a first inlet end, and a first outlet end. The first inlet end is configured to receive the fluid from the inlet pipe. The buffer volume also includes an intermediate tube surrounding the smallest diameter tube having a first capped end and a second outlet end. The first capped end is positioned next to the outlet end of the smallest diameter tube. The buffer volume also includes a largest diameter tube surrounding the intermediate tube second capped end and a third outlet end. The second capped end is positioned next to the second outlet end of the intermediate tube. The system also includes an outlet pipe configured to convey the fluid from the buffer volume.

Abstract: The present invention comprises a method and kit for repairing the wall of a manhole wherein a material capable of curing and hardening is adhered to the wall. An expandable bladder engages the curable and hardenable material and presses against and smoothes the material. The bladder may be chemically bonded.

Abstract: In a pipe insulation apparatus includes a plurality of segments which are connected so as to be separable along division lines, and each of the plurality of segments is composed of a plurality of insulation layers, and is covered by a finishing cover. The finishing cover includes: at least one joint chassis that is made of a soft metal material, and has a first insertion groove and a second insertion groove formed at a first end portion and a second end portion, respectively, and has a saw-toothed first protrusion formed on one inner side surface of each of the first insertion groove and the second insertion groove and a saw-toothed second protrusion formed alternately with the first protrusion on the other inner side surface; and a plurality of plates that is made of a soft metal material.

Abstract: A sealing apparatus suitable for use as a subsea repair clamp includes a sealing membrane with first and second portions for engaging an outer surface of a pipe. Retaining members are located in opposing relationship to each other about the sealing membrane and are secured to each other by a closure member. The retaining members retain sealing engagement between the sealing membrane and the pipe. Each of the retaining members can include axially spaced plates arranged generally transversely to a longitudinal axis of the sealing membrane.

Abstract: A flange adapter plate assembly comprising an inside flange pattern for accepting bolt locking heads in slots disposed within recesses beneath the surface thereof. The inside flange pattern may optionally include key holes for expeditiously removing the bolts while the outside flange is secured in situ. The eduction tube portion comprises tube members having tight convolutions and a plethora of pronounced barb members. A single adapter plate reduces number of prerequisite components and also increases eduction tube strength. A twist lock protocol is used to expeditiously attach the flange adapter transition plate to a corresponding mating flange.

Abstract: The invention relates to a tube (01) or semi-finished tube, in particular for chemical apparatus construction, for storing or for transporting aggressive storage media, comprising a solid inner tube (02) with the inner side (05) of which the storage medium can come into contact and which is made of a thermoplastic that is chemically resistant to the storage medium, and comprising an adhesion-promoting layer (03) applied to the outer side (09) of the inner tube (02), which has a textile structure and is made of a thermoplastic, the textile structure of the adhesion-promoting layer (03) being suitable for mounting a support tube (04) on the outer side of the adhesion-promoting layer (03), the outer side of the inner tube (02) and the inner side of the adhesion-promoting layer (03) being welded together in a material-bonded manner, the textile structure being preserved on the outer side of the adhesion-promoting layer (03).

Abstract: A crush resistant hose comprises a plurality of layers comprising a reinforcing carcass formed from a mixture of multifilament fibers including at least one of polyester, aramide, nylon and rayon.

Abstract: The invention relates to an extrusion preventing supporting device (30) comprising interconnected chain elements (40; 50, 55). Outwardly curved ends (42; 57, 58) of the chain elements (40; 50, 55) are adapted to be received by inwardly curved ends (43; 52, 53) of adjacent chain elements (40; 50, 55). Each chain element comprises a through connection bore (44; 54, 59). The extrusion preventing supporting device (30) further comprises one continuous connection wire 70 provided through the respective connection bores (44; 54, 59).

Abstract: Disclosed herein is wastewater pipe having a shape that is operable to flow both small and large volumes of wastewater. The wastewater pipe includes a bottom portion with a different diameter than to top portion. The top and bottom portions of the wastewater pipe are connected by side walls that extend tangentially from the bottom portion and intersect tangentially with the top portion. The pipes may also variously include alignment tabs.

Abstract: A hose comprising a tubular body of flexible material arranged between an inner and outer helically wound wire. The hose further comprises an elongate member having opposing longitudinal edges, the elongate member being helically wound around the tubular body such that the opposing longitudinal edges of the layer are in an adjacent or overlapping arrangement, wherein each longitudinal edge includes a formation capable of interengaging with a cooperating formation on the opposing longitudinal edge, wherein the elongate member is provided at least one reinforcing member which extends along the longitudinal axis of the elongate member.

Abstract: An elongate tape and method of producing an elongate tape are disclosed. The tape is suitable for forming a helically wound layer of interlocked windings in a flexible pipe body, and is configured for interlocking with adjacent windings, wherein the tape has a cross-sectional profile including: a first surface that in use forms a radially inner surface of the helically wound layer; a further surface, in use forming a side wall extending radially outwards, away from the first surface, and for forming a contact surface with a region of an adjacent winding; and a transition surface joining the first surface and further surface, wherein the transition surface comprises a curved surface, and wherein the curved surface has a larger radius of curvature in a region proximate the first surface than in a region proximate the further surface.

Abstract: A replaceable antenna assembly for use with a piston accumulator configured for supplying fluid to a hydraulic cylinder is provided. The antenna assembly includes a hollow manifold for flow of fluid and an antenna connected into or onto the manifold for emitting and receiving electromagnetic waves. The hollow manifold is connectable to and configured to be in fluid communication with both the piston accumulator at one end and a pressure line at the other end. The pressure line is connectable to an external high pressure gas bank. The antenna assembly further includes at least one first bore for transferring signals to and from the antenna and at least two fluid channels symmetrically displaced around the circumference of the antenna, thereby ensuring that most of, or all, fluid flows on the radial outside of the antenna during use.

Abstract: A pressure accumulator has at least one accumulator housing (403) with at least one connection (411) for a pressure medium (421), especially in the form of a fluid that can be accumulated in the accumulator housing (403). The filling material (419) has hollow chambers or forms at least one hollow chamber for accommodating at least part of pressure medium (421) and/or at least one further pressure medium (449) introduced into at least sections of the accumulator housing (403).