Abstract: An apparatus for injecting sealant into the packing chamber of a valve requiring no venting of pressure within the valve. The apparatus which includes an interior valve is attached to the valve body by drilling and tapping a connection or by friction welding. A high pressure packing gland is attached to the apparatus and a drill bit is passed through the combination to complete an opening into the packing chamber. The drill bit is withdrawn past the interior valve, which is closed and then out of the combination. The packing gland is removed and a sealant injection device attached. The interior valve is opened and sealant injected into the packing chamber. The valve is closed, a completion plug installed into the end of the fitting, and a completion cap with a sealing ring is installed over the entire valve and fitting, thereby forming multiple redundant seals.

Abstract: A pipe weld repair structure adapted to seal leaks or cracks at a weld circumferentially disposed in a pipe. Includes at least two pipe clamp segments disposed around the pipe and connected together to form complete clamp. Each clamp segment defines two inner surfaces adapted to be in contact with outer surface of pipe when clamps are connected together around pipe. Each clamp segment defines an inner grooved recess disposed between inner surfaces and adapted to enclose a weld circumferentially disposed around pipe when clamps are connected together around pipe. Clamp segments define an internal diameter when clamp segments are connected to form complete clamp. Internal diameter is conventional fit around pipe while clamp segments are at sufficiently high temperature to cause thermal expansion. Internal diameter is a shrink fit around the surfaces of pipe after clamp segments are connected together while at sufficiently high temperature and subsequently allowed to cool to same temperature as pipe.

Abstract: A method of and apparatus for sealing tubular conduits carrying one or more utility lines provided therein that do not totally displace the void is disclosed. The method and apparatus include spacing a plurality of dams along the axis of the conduit and defining a cell penetrated on opposite sides by the line or lines and thereafter pressuring the cell with a silicone or RTV rubber and exposing the cell to moisture sufficient to cause the resin to cure.

Abstract: A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of one piece frame segments positionable in end-to-end relationship around the pipe. Each segment includes a pair of spaced apart metal lips which are adapted to form a metal-to-metal seal with a pipe or flanges when the frame segments are connected together. Access means are provided in each frame segment to permit the passes of liquid sealant into the recess defined by the lips and the pipe.

Abstract: A sealing member including a seal retainer sleeve provided in segments and two spaced apart grooves defined all around the inner wall of the sleeve. Sleeve is adapted to be fitted around outside of a cylindrical surface on each side of an opening. An elastomeric fluid pressure seal segment is mounted within each groove in the sleeve to provide a fluid tight seal within the spaced confined between the grooves. The bottom of each of the grooves is dovetailed to retain corresponding mounting beads of the seal. Each segment of the seal, as mounted within the grooves, is shaped with an outside diameter surface merging into the mounting beads. The high pressure bead of the mounting beads merges into the side of a groove extending axially into the segment. The other side of the groove merges into a flexible lip which is responsive to pressure applied within the cylindrical space. The lip extends into an inside diameter surface.

Abstract: A housing having a longitudinal aperature therethrough, and an exterior surface adapted to be securable to a container. A stem is longitudinally movable within the housing and is cooperatively conformed with the housing such that an annulus exists between a portion of the housing and the stem. The stem includes a plurality of ports allowing fluid communication between the annulus and a longitudinal cavity extending from the top end of the stem. A sealing instrumentality if included proximate a bottom end of the valve to prevent the flow of fluid into the valve annulus when the valve is in a first "closed" position. The stem is adapted to be moved longitudinally within the housing to a second, "open", position wherein the sealing instrumentality is released and fluid may enter the annulus and pass through the ports to exit the valve through the stem cavity.

Abstract: A method of waterproofing a porous wall of a subterranean vault as provided by propelling a moisture activated, room temperature curable, pourable, self-leveling dimethylpolysillxane or dialkylpolysillxane which are generally referred to as silicone or TV rubber onto the side of the wall and thereafter subjected to moisturizing conditions to activate the resins to form a water impervious flexible barrier adjacent the wall.

Abstract: An apparatus for plugging a pipeline through a side opening and arranged such that the sealing portion may be removed and a rotary brush substituted to effect initial cleaning of pipeline should that be desired. The apparatus includes a bell-type housing which is arranged for mounting over the side opening in a pipeline to form a fluid tight chamber therewith so that the cleaning and plugging operation can be carried out while fluid pressure is present in the pipeline. The apparatus includes a drive stem which extends into the chamber through a ball and socket coupling provided in the upper part of the housing which permits articulation of the drive stem. The drive stem has supported on the lower end thereof a plug assembly which is adapted for insertion into the pipeline for effecting the seal. The plug assembly includes an annular cup-shaped seal having an annular lip which is sized for easy insertion into the pipeline at a point axially adjacent to the side opening.

Abstract: A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of segments positionable in end-to-end relation around the pipe. Each segment includes spaced parallel annular lips flaring from its inner periphery with each lip being an integral part of the segment and having a bent tip portion extending toward the matching oppositely positioned tip portion of the opposite lip. A connecting means is used to connect the segments together in end-to-end relation, the lips extending from the segments to thus form an annular recess around the pipe when the segments are connected. An access means is provided in the frame to permit passage of a liquid sealant into the recess and the lips direct flow of the sealant into direct contact with the pipe to form a self-energizing seal between the lips and pipe.

Abstract: In one exemplar embodiment, a combination closure conduit and closure plug are provided for closing a side opening into a pipeline. The closure stub or conduit is attached to the pipeline around the side opening and has an interior annular shoulder. A closure plug adapted for insertion into the conduit has a projecting peripheral shoulder and provides a first sealing means. A peripheral sealing means disposed on the plug ahead of the peripheral shoulder provides a second means of sealing the plug to the conduit. Locking screws engage a peripheral surface on the top of the plug to lock the plug in place. A by-pass valve is carried by the plug to allow fluid communication through the plug during insertion of the plug.

Abstract: In one exemplar embodiment, a method and apparatus are provided for sealing leaks which occur at the flanged connections of pipelines wherein a wire is wrapped about the upper surface of the flange connecting bolts for filling the gap between the flanges and above the bolts, an injection valve means is installed for relieving pressure from inside the gap while the wire is being wrapped and for injecting a sealant to the interior of the gap beneath the wire wrap, and a sealant is provided for filling the gap beneath the wire wrap for stopping the leak and combining with the wire wrap to provide a permanent repair for the leak.

Abstract: A method and apparatus for a tapered pipeline seal includes a means for enabling a line to be sealed with a rotatable tapered sealing plug or apparatus.

Abstract: A new and improved method and apparatus for plugging a branch line connection from a main line connection includes welding a suitable flange connection to the main line across from said branch line, tapping the walls of the main line from the flange connection to the branch line and positioning a plugging member adjacent and in said branch line wherein the plugging member seals against the inner surface of the main line which is normally smooth and also enables the pressure in the main line to further enhance the seal by enabling the pressure from the main line to exert pressure on the rear of the plug to seal against such main line immediately adjacent and around the periphery of the opening of the branch line.

Abstract: An Expansion Joint and Seal for Pipe includes an inner or outer seal for such joint, with a suitable sealing means sufficiently flexible to enable expansion of the joint while maintaining desired seal between the two joints.

Abstract: In one exemplar embodiment, a method and apparatus are provided for sealing leaks which occur at the flanged connections of pipelines wherein a wire is wrapped about the upper surface of the flange connecting bolts for filling the gap between the flanges and above the bolts, an injection valve means is installed for relieving pressure from inside the gap while the wire is being wrapped and for injecting a sealant to the interior of the gap beneath the wire wrap, and a sealant is provided for filling the gap beneath the wire wrap for stoping the leak and combining with the wire wrap to provide a permanent repair for the leak.

Abstract: In one exemplar embodiment, a leak repair clamp for pipe and pipe flanges, valve bonnet flanges and the like is disclosed having a divided clamp frame positionable about the pipe or pipe flange. The divided clamp frame has a pair of spaced parallel channels disposed about its inner periphery. Deformable self-energizing seal members are disposed in each of the channels and having a flexible sealing tip portion radially extending from the inner periphery of the clamp frames. A retaining member is disposed in each of the channels adjacent the seal member for engaging the seal and the channel and retaining the seal member fixed within the channel.