A pipe connection swivel joint assembly includes a pipe member having an end flange with a conical proximal surface. A split ring assembly includes a pair of swivel ring halves each having a conical inner surface disposed against the conical proximal surface of the pipe member. The pair of swivel ring halves further include a plurality of mounting holes extending axially through the pair of swivel ring halves and a plurality of ring fastening holes. An outer ring is connected to the pair of swivel ring halves by a plurality of split ring fasteners engaged with the plurality of ring fastening holes. The outer ring supports a pair of distance plates that are disposed between opposing ends of the pair of swivel ring halves.

A pipe connection swivel joint assembly includes a pipe member having an end flange with a conical proximal surface. A split ring assembly includes a pair of swivel ring halves each having a conical inner surface disposed against the conical proximal surface of the pipe member. The pair of swivel ring halves further include a plurality of mounting holes extending axially through the pair of swivel ring halves and a plurality of ring fastening holes. An outer ring is connected to the pair of swivel ring halves by a plurality of split ring fasteners engaged with the plurality of ring fastening holes. The outer ring supports a pair of distance plates that are disposed between opposing ends of the pair of swivel ring halves.

A seal assembly for an HVAC system includes a first block having a first aperture and a first sealing surface, a second block having a second aperture and a second sealing, and a conduit having a tube portion with an axially extending aperture and a flange extending radially outwardly from an end of the tube portion. The tube portion is disposed within the first aperture of the first block and the flange is disposed between the first sealing surface of the first block and the second sealing surface of the second block and is configured to deform when compressed therebetween. The seal assembly further includes an insert providing fluid communication between the aperture of the tube portion and the second aperture of the second block. A first end of the insert is received in the aperture of the tube portion of the conduit.

A v-clamp provides an enhanced axial load to tubular body end flanges in order to establish a fluid-tight joint therebetween. The v-clamp, according to an example, has a v-angle that varies in value over a section or more of a band of the v-clamp. The varying v-angle has been shown to effect an axial load that is more evenly and uniformly applied around a circumference of the v-clamp and to the underlying tubular body end flanges. Furthermore, in an example, the tubular body end flanges have a partially spherical shape.

A method of manufacturing a joint flange using a thickness-increased, machined pipe is provided. The method includes a pipe cutting operation in which a pipe is cut to a predetermined length, a flange forming operation in which a flange having a mounting hole for installing the pipe is formed by die casting, a bump-forming operation in which a thickness-increased part, which is formed by increasing a thickness of one end of the pipe, is bumped to form a first bead locked to the flange, a machining operation in which a circumference of the thickness-increased part is machined to form a sealing groove having an O-ring installed, and a fixing operation in which the pipe is inserted in the mounting hole of the flange and the other end of the pipe is pressed to form a second bead so that the pipe is pressed to a lower end of the flange.

A method of manufacturing a joint flange using a thickness-increased, machined pipe is provided. The method includes a pipe cutting operation in which a pipe is cut to a predetermined length, a flange forming operation in which a flange having a mounting hole for installing the pipe is formed by die casting, a bump-forming operation in which a thickness-increased part, which is formed by increasing a thickness of one end of the pipe, is bumped to form a first bead locked to the flange, a machining operation in which a circumference of the thickness-increased part is machined to form a sealing groove having an O-ring installed, and a fixing operation in which the pipe is inserted in the mounting hole of the flange and the other end of the pipe is pressed to form a second bead so that the pipe is pressed to a lower end of the flange.

A double wedge locking mechanism provides an attachment mechanism to a liner system for fluid distribution network.

A sealing interface includes a first tube having an end with a convex surface and a second tube having an end with a convex surface. A spacer is disposed between the respective ends of the first and second tubes. One side of the spacer has a concave surface that substantially matches the convex surface of the end of the first tube, and another side of the spacer has a concave surface that substantially matches the convex surface of the end of the second tube. The spacer includes a through hole in fluid communication with a fluid passageway of the first tube and a fluid passageway of the second tube. Tying elements are respectively coupled to the first tube and the second tube, with the tying elements applying a compressive force between the first tube and the spacer, and applying a compressive force between the second tube and the spacer.

A pipe joint is configured such that an inserting pipe portion is inserted along a pipe axis direction to a receiving pipe portion having a flange portion to be connected thereto. The pipe joint includes a protruding portion having an integral construction, the protruding portion being fixed to an outer circumferential face of the inserting pipe portion and protruding radially outwards therefrom, a stopper member having an annular integral construction, the stopper member coming into contact with a first lateral face of the protruding portion to restrict displacement of the inserting pipe portion in a direction away from the receiving pipe portion, a fastening member configured to fasten the flange portion to the stopper member. A restricting face is formed in a second lateral face of the protruding portion disposed on an opposite side to the first lateral face in the pipe axis direction, the restricting face restricting displacement of the inserting pipe portion in a direction for its insertion to the receiving pipe portion.

A pipe joint is configured such that an inserting pipe portion is inserted along a pipe axis direction to a receiving pipe portion having a flange portion to be connected thereto. The pipe joint includes a protruding portion having an integral construction, the protruding portion being fixed to an outer circumferential face of the inserting pipe portion and protruding radially outwards therefrom, a stopper member having an annular integral construction, the stopper member coming into contact with a first lateral face of the protruding portion to restrict displacement of the inserting pipe portion in a direction away from the receiving pipe portion, a fastening member configured to fasten the flange portion to the stopper member. A restricting face is formed in a second lateral face of the protruding portion disposed on an opposite side to the first lateral face in the pipe axis direction, the restricting face restricting displacement of the inserting pipe portion in a direction for its insertion to the receiving pipe portion.