A fluid flow apparatus includes a body and an insulation system. The body has an exterior surface having a passage extending therethrough from a first to a second portion. The passage has first and second end portions adjacent to the first and second portions, respectively, and an intermediate portion extending between the first and second end portions. A cross-sectional area of the intermediate portion is larger than that of the first and second end portions. The insulation system has an outer and an inner liner. The outer and inner liners are arranged in the passage to engage with the body so as to line the passage and to provide a barrier between the body and a fluid flowing along the passage. The outer liner thereby engages with the body, and the inner liner is partially enclosed by the outer liner and the body at the first and second end portions.

A thermal protection apparatus is disclosed. The thermal protection apparatus may comprise a thermally insulative layer positioned proximate to a portion of a structure having a dimensional transition, wherein the dimensional transition is thermally protected.

A method is shown for installing a heat tube on a section of pre-insulated piping. A metal carrier pipe is covered with a first layer of foam insulation. Next, a routing device is used to cut a longitudinal slot along the length of the pipe so that the pipe exterior surface is exposed from the insulation. A heat tube is then installed within the longitudinal slot, whereby the heat tube contacts the exterior surface of the metal carrier pipe. A second layer of foam insulation is then sprayed onto the exterior of the metal carrier pipe, covering the previously formed longitudinal slot and installed heat tube. A polyolefin coating is then applied over the insulation to form a protective outer jacket for the insulated pipe.

A cover for a pipe including a body, a slit, two flanges extending from the edges of the slit, and protrusions extending outwardly from each flange. The protrusions have three connected central openings extending from an outermost end of the protrusion to an inner surface of the flange. Also a fastener having five portions. The maximum width or diameter of the first portion, the third portion, and the fifth portion is larger than the maximum width or diameter of the second portion and the fourth portion. Also, a system for covering a pipe having such a cover and a plurality of such fasteners, a kit for covering a pipe including such a cover and at least one such fastener, and a method of covering a pipe.

A thermal barrier coating for an internal combustion engine includes an insulating coating applied on engine valves and exhaust components, where a chosen material of the insulating coating comprises a material of a sodium zirconium phosphate (NZP) class of ceramics that has a coefficient of thermal expansion (CTE) greater than 5 ppm/C.

A reusable insulation wrap for insulating and protecting an article, the wrap comprising a multilayer insulation member having a nylon protective layer adapted to be abrasion and moisture resistant to prevent damage to the other layers, a polymerized chloroprene stretchable layer adapted to resist moisture and having first and second edges and sized to closely encircle the article, a closed cell foam insulative layer, a foil reflective layer affixed to the closed cell foam adapted outside thereof, a flame retardant and an ultraviolet protectant in one of the layers and a hook and loop fastener adapted to cooperatively engage and maintain desired position on the article, whereby, the wrap is stretched around the article to fit snugly in place minimizing influence of the outside environment including temperature fluctuations, moisture, and debris on the article.

The present invention relates to an insulating material protective cover for a valve unit. The insulating material protective cover for a valve unit, according to the present invention, comprises: a first split body including a first plate, first finishing chassis respectively coupled to both end portions of the first plate in the widthwise direction, and second plates perpendicular to the first plate and respectively coupled thereto; a second split body including a third plate, second finishing chassis respectively coupled to both end portions of the third plate in the widthwise direction, and fourth plates perpendicular to the third plate and respectively coupled thereto; and a third split body including a fifth plate, a second finishing chassis coupled to a first end portion of the fifth plate in the widthwise direction, a first finishing chassis coupled to a second end portion of the fifth plate in the widthwise direction, and a sixth plate perpendicular to the fifth plate and coupled thereto.

A flowline branch structure (10) has at least one inner branch assembly with an inner flowline branch and at least one inner flowline pipe attached to and communicating with the inner flowline branch. At least one outer branch assembly (12) of the flowline branch structure has an outer branch housing disposed around the inner flowline branch and at least one outer pipe (14) disposed around the inner flowline pipe and attached to the outer branch housing. A generally annular space is defined between the inner and outer branch assemblies. At least one wiring element including an electrical heating element is disposed in the sealed space on an outer side of the inner branch assembly. The, or each, wiring element extends in one continuous length across an interface between the inner flowline pipe and the inner flowline branch. This reduces the number of connections necessary to create the flowline branch structure.

The present invention relates to a process to reduce internal stresses in insulation molded onto complex pipes, preferably complex subsea pipe, to reduce cracking in the molded insulation. Insulation materials applies to complex pipes comprising branches, i.e., valves, and the like, may be susceptible to cracking at, or near where the branch connects to the pipe as the coating of insulation material cures or hardens. The process of the present invention aims to reduce post molded cracking by reducing molded in stress at the branch/pipe junction. This is accomplished by providing a preform at or near a branch/pipe junction prior to applying the coating of insulation material.

An exhaust aftertreatment assembly for treating exhaust gas. According to various embodiments, a first housing has a first end and a second housing has a second end, the second end being coupled to the first end. At least one alignment bracket is coupled to the first housing proximate the first end. An annular gasket is supported on the at least one alignment bracket between the first and second ends. The at least one alignment bracket may comprise a base having a curved surface conforming to the interior surface of the housing, the base having a length that is less than a circumference of the interior surface. A stop arm extends substantially transversely from the base. A support arm extends substantially transversely from the stop arm and substantially parallel to the base. An insulation receiving space is defined between the base, stop arm, and support arm.