An exhaust system having a pipe for conveying exhaust from an engine, the end of which has an outwardly-protruding lip; a first pipe flange having a hole large enough to allow the lipped end of the pipe to pass through it, and a recessed shoulder adjacent the hole; a collar, configured to releasably encircle said first pipe, to abut with the recessed shoulder at its outer periphery, and the lipped end of the pipe at its inner periphery, thereby preventing the collar and lipped pipe assembly from passing through said hole; and a second pipe flange configured to attach to said first pipe flange to connect a tail pipe to the first pipe, and to hold the pipe, flange and collar assembly together. The invention also provides counterweights for counterweighted lift trucks adapted to secure such exhaust systems, and methods of fitting such exhaust systems.

Provided is a pressure pipe connection structure that reduces man-hours for machining one or more pressure pipes and does not require high machining precision. Multiple arc members form a ring shape that makes a circle by matching the end faces thereof to each other. Non-penetrating holes may be provided on the outer circumference of the arc members. The ring formed by the multiple arc members has an inner diameter that is smaller than the outer diameter and larger than the inner diameter of a pressure pipe. A cylindrical sleeve has an inner cylindrical surface inside which the entire outer circumferences of arc members are fitted into a hollow internal space, into which respective one or more pressure pipes are inserted from one or more opposing entrances; and multiple through holes, which penetrate from the outside and are provided with female thread ridges. The one or more pressure pipes are cut to a certain length that is suited to the placement site and a groove is grooves cut in the corresponding pressure pipe. The arc members are fitted into the groove, and the arc members are positioned on an inner cylindrical surface by inserting the one or more pressure pipes into a sleeve, the respective through holes and non-penetrating holes are made to communicate with each other, and the one or more pressure pipes are fixed using bolts.

A pipe extending from a first side toward a second side includes a side wall and a spool. The spool formed in the side wall is bent so as to protrude from an outer circumferential surface of the pipe, and extends to surround the outer circumferential surface. The spool includes a first portion located on the first side and a second portion located on the second side. There is a clearance between the first portion and the second portion in a top region of the spool, and the first portion and the second portion substantially abut each other in a base region.

A flange assembly includes a flange for connection to a hose or pipe, the flange defining a contact face for engagement with a contact face of an opposed flange. The flange assembly also includes at least three clamps spaced circumferentially around the contact face. Each clamp includes a clamp body pivotably secured to the flange and a clamp member mounted on the clamp body, which is movable between a first, retracted position and a second, clamping position. A clamp face of the clamp member faces the contact face of the flange. The clamp member is movable relative to the clamp body to adjust the position of the clamp face relative to the contact face of the flange and adjust a clamping force created between the clamp face and the contact face of the flange to retain an opposing flange in face-to-face engagement with the contact face of the flange.

An arrangement for fluid-tight connecting of lines including a first and second connection element. The connection elements are aligned with each other and are connected by fastening means. The arrangement includes an intermediate element between the connection elements and a holding element and a second sealing element. A first sealing element is arranged in the holding element between the sealing surfaces of the connection elements. The holding element has a hollow wall with a first and second edge. The second sealing element is connected to the holding element on the second edge. The intermediate element includes an indentation extending from a first end formed on an outer side of the second sealing element to a second end formed near the first sealing element. The first end has a conical shape, wherein oppositely arranged side walls of the indentation rest on one another on the outer side of the sealing element.

Pipe joint, which is formed from the end portions of pipe sections to be joined together with the portions including a collar, and from flange parts which, as seen from the junction, are placed on different sides of the collars and tightened with applicable fixing members, such as with screws and nuts. The collar of the pipe section is formed from the wall of the end of the pipe section by shaping with a shaping member. The joint surface of the collar of at least one of the pipe sections to be joined is arranged to be divergent by the amount of an angle ?, ? from the plane perpendicular to the longitudinal axis of the pipe section. A method and to a flange part arrangement are disclosed.

There is provided a pipe connection arrangement for a heat exchanger and a method of connecting a pipe to a heat exchanger utilising a pipe connection arrangement. The pipe connection arrangement includes: a metallic block fitting; a flange for coupling to the block fitting; and a seal. The block fitting includes a bore extending therethrough for receiving a pipe for connection to a heat exchanger and the flange includes a bore extending therethrough for receiving the pipe. The block fitting includes a surface that faces the flange when the flange is coupled to the block fitting. The seal is configured for location between and for abutting both the surface of the block fitting and an annular collar of a pipe when it is connected by the pipe connection arrangement. The pipe extends through the bore of the flange and the flange is coupled to the block fitting.

A full-face flare joint for a lined piping system having a connector portion of a metal piping being flared radially outwardly at a predetermined angle to form a pipe lap with a first surface and a second surface. The first surface is configured to engage a pipe flange. Further, a pipe lining extends out of the connector portion and is flared radially outwardly over the second surface of the pipe lap thereby forming a liner flare. A full-face flare component with a bottom portion is attached to the liner flare so that the bottom portion of the component forms an angle of about 90 with an inner surface of the pipe lining.

Provided is a pressure pipe connection structure that reduces man-hours for machining one or more pressure pipes and does not require high machining precision. Multiple arc members form a ring shape that makes a circle by matching the end faces thereof to each other. Non-penetrating holes may be provided on the outer circumference of the arc members. The ring formed by the multiple arc members has an inner diameter that is smaller than the outer diameter and larger than the inner diameter of a pressure pipe. A cylindrical sleeve has an inner cylindrical surface inside which the entire outer circumferences of arc members are fitted into a hollow internal space, into which respective one or more pressure pipes are inserted from one or more opposing entrances; and multiple through holes, which penetrate from the outside and are provided with female thread ridges. The one or more pressure pipes are cut to a certain length that is suited to the placement site and a groove is grooves cut in the corresponding pressure pipe. The arc members are fitted into the groove, and the arc members are positioned on an inner cylindrical surface by inserting the one or more pressure pipes into a sleeve, the respective through holes and non-penetrating holes are made to communicate with each other, and the one or more pressure pipes are fixed using bolts.

A self-tightening sealing connector includes a first tubular member, a second tubular member, a first locking member, and a first sealing member. The first tubular member includes a first connecting end and a first flange located at the first connecting end. The second tubular member includes a second connecting end. The second connecting end is configured to be connected with the first connecting end thereby fluid communicating the first tubular member with the second tubular member. The first sealing member is configured to be located between the first locking member and the first flange. In an assembled state, the first locking member and the first flange are capable of applying a force on the first sealing member in an axial direction, and the force can be increased, when an inner fluid pressure is increased.