Abstract: A hot-tapping sleeve is provided for tapping a main pipe and attaching a branch pipe. The tapping sleeve includes a split sleeve having first and second sleeve members which together form a circular bore for receiving a portion of the main pipe. The first and second sleeve members each form approximately one half of the circular bore. A plurality of clamping members pass through associated holes in the first and second sleeve members to clamp the first and second sleeve members together with the main pipe therebetween. A side branch is attached to the first sleeve member which has an opening in fluid communication with the circular bore. A sheet type packing member is located around the opening and is only between the first sleeve member and the main pipe. A metal spray is located on the second sleeve within the circular bore and engages the main pipe for resisting axial displacement of the main pipe to permit tapping of the main pipe while the main pipe is under fluid pressure.

Abstract: A hydraulic gun for injecting sealant including an elongated barrel in which a floating piston separates a bore onto a material receiving chamber and a hydraulic fluid chamber. A manual hydraulic fluid pump assembly is mounted on the barrel in parallel juxtaposition. Mounting blocks serve to join the hydraulic pump assembly to the barrel and to provide support feet for the gun. The hydraulic pump is mounted on the barrel in a manner that permits the gun to be operated in a vertical orientation with continued supply of hydraulic fluid.

Abstract: A coupling assembly for mechanically coupling the plain end of a pipe, comprising a pair of standard forged flanges as basic components between which is disposed a wedge ring. One of the flanges is of the slip-on type and has associated with it a conical collet bore for receiving the wedge ring. When tension bolts assembled through the flanges are tightened the wedge ring is driven into the collet bore and tightly radially against the periphery of the pipe to thereby lock the coupling to the pipe.

Abstract: A method and apparatus for installing a split fitting on an intermediate point of a pipeline. The apparatus includes remotely-controlled, power-operated manipulator elements operable to close segments of the fitting about the pipeline in the manner of a clamshell. The manipulator elements include cam means to initially close the fitting segments and C-clamp means to effect full closure of the fitting segments.