A threaded connection body (20) is welded to the outer surface of the wall (10) of a pipe, seachest or other flooded cavity (4) within the hull of a ship or floating off-shore installation. A sealed cutting apparatus (50) is mounted via a valve unit (30) on the connection body and a cutter extended through the open valve (34) to form an opening (18) in the wall (10). After retracting the cutter and closing the valve (34), the cutting apparatus is replaced by a sealed inspection unit (70) having a camera (71) which is extended through the valve and the opening to inspect the cavity (4). After retracting the camera and closing the valve, the inspection unit is replaced by a plug deployment unit (100) which is used to advance a plug (120) through the open valve and screw it into the connection body (20). The valve unit (30) can then be removed and replaced with a cap (90) so that the plug and the cap provide a double seal to the connection body.

A threaded connection body (20) is welded to the outer surface of the wall (10) of a pipe, seachest or other flooded cavity (4) within the hull of a ship or floating off-shore installation. A sealed cutting apparatus (50) is mounted via a valve unit (30) on the connection body and a cutter extended through the open valve (34) to form an opening (18) in the wall (10). After retracting the cutter and closing the valve (34), the cutting apparatus is replaced by a sealed inspection unit (70) having a camera (71) which is extended through the valve and the opening to inspect the cavity (4). After retracting the camera and closing the valve, the inspection unit is replaced by a plug deployment unit (100) which is used to advance a plug (120) through the open valve and screw it into the connection body (20). The valve unit (30) can then be removed and replaced with a cap (90) so that the plug and the cap provide a double seal to the connection body.

An expansion plug includes a first collar configured to advance as it rotates relative to a shaft, a second collar configured to move axially along the shaft without rotating, a first expanding structure, and a second expanding structure disposed in the stated order on the shaft. When the first collar is rotated in an advancement direction, opposite sides of the second expanding structure are moved closer together to expand the second expanding structure, and then opposite sides of the first expanding structure are moved closer together to expand the first expanding structure.

An expansion plug includes a first collar configured to advance as it rotates relative to a shaft, a second collar configured to move axially along the shaft without rotating, a first expanding structure, and a second expanding structure disposed in the stated order on the shaft. When the first collar is rotated in an advancement direction, opposite sides of the second expanding structure are moved closer together to expand the second expanding structure, and then opposite sides of the first expanding structure are moved closer together to expand the first expanding structure.

Embodiments described herein methods can be used in particulate filter regeneration, such as particulate filters used for filtering the exhaust of an engine, e.g., a diesel engine. Systems herein can be configured to dispense combustion gas(es) into housing were a particulate filter is contained and to ignite the combustion gases. Methods for conducting a safety verification process of such systems are disclosed, as well as methods for regenerating the filters. Still other embodiments are described.

Support for liquid dispensers, which comprises a main body which can be coupled with a liquid dispenser and includes a main duct to allow a flow of liquids from the main body to the liquid dispenser, wherein the main body extends along a longitudinal axis from a rear side to a front side of the main body, wherein the main body is provided with a first coupling suitable to fix the support to a tube, wherein the first coupling comprises a seat suitable to surround a portion of the tube, so that the tube can move axially but not radially in the seat.

The branch pipe forming apparatus 100 includes a first split member 3 and a second split member 4, which include split surfaces 3a and 4a along a plane including an axial center X of the existing pipe W and an axial center Y of a branch pipe 2, and which are connected to each other in a sealed state by a fastening member B. An axial center Z of a tube part 31 is located closer to the branch pipe 2 than to the outer circumferential surface of an existing pipe W in a cutter accommodation space Sp. The first split member 3 and the second split member 4 are coupled to each other at respective coupling portions with respective coupling openings opposite to each other across the drilled hole Wa and the cutter accommodation space Sp and holding therebetween an end portion 2A of the branch pipe 2 in a sealed state.

The branch pipe forming apparatus 100 includes a first split member 3 and a second split member 4, which include split surfaces 3a and 4a along a plane including an axial center X of the existing pipe W and an axial center Y of a branch pipe 2, and which are connected to each other in a sealed state by a fastening member B. An axial center Z of a tube part 31 is located closer to the branch pipe 2 than to the outer circumferential surface of an existing pipe W in a cutter accommodation space Sp. The first split member 3 and the second split member 4 are coupled to each other at respective coupling portions with respective coupling openings opposite to each other across the drilled hole Wa and the cutter accommodation space Sp and holding therebetween an end portion 2A of the branch pipe 2 in a sealed state.

An apparatus for installing a fitting onto a fluid line, comprising a main body and a fitting installation member. The main body comprises a base and a guide member, wherein the base comprises a groove extending in a first direction configured to receive at least a portion of the fluid line, wherein the guide member is connected to and spaced apart from the groove of the base, and wherein the guide member comprises a hole extending through the guide member in a second direction. The fitting installation member comprises an elongate shaft and a tip portion, wherein the elongate shaft extends through the hole of the guide member and into the groove of the base member, and wherein the tip portion is smaller than the shaft in a first dimension.

An apparatus for installing a fitting onto a fluid line, comprising a main body and a fitting installation member. The main body comprises a base and a guide member, wherein the base comprises a groove extending in a first direction configured to receive at least a portion of the fluid line, wherein the guide member is connected to and spaced apart from the groove of the base, and wherein the guide member comprises a hole extending through the guide member in a second direction. The fitting installation member comprises an elongate shaft and a tip portion, wherein the elongate shaft extends through the hole of the guide member and into the groove of the base member, and wherein the tip portion is smaller than the shaft in a first dimension.