A pipe repair tool and method of use, for use with a coupler of the type having a first end and a second end, the first end having an outwardly projecting flange, such that the repair tool includes a cuff portion having a leading edge and a trailing edge, the cuff engaging a sleeve portion of the coupler with the leading edge of the cuff facing the flange of the first end of the coupler. The tool may include an outwardly projecting first leading ear having a pry surface near the leading edge of the cuff, the pry surface facing the trailing edge of the cuff such that force applied to the pry surface urges the leading edge of the tool toward the flange of the first end of the coupler.

A broken pipe, such as a PVC water pipe, is repaired by cutting out a section and replacing that section with a special repair assembly. The replacement section is of at least the same diameter and specification, such as ASTM Schedule 40 PVC, as the existing line of pipe. The ends of the repair pipe section and ends of the existing pipe are provided with increased diameters, and special one-way couplings are provided to slide over the two joints, one at each end of the repair section, to solvent weld the joints together. In a modified procedure a single joint is made with the special coupling.

A method of opening a fluid control valve having a housing externally fitted onto a fluid pipe in a hermetic state and a valve body configured for contacting an inner peripheral surface of a hole of the fluid pipe provided in the housing and an inner peripheral surface of the fluid pipe to hermetically block or open a flow of fluid in the fluid pipe. The method includes a pressure adjustment step of decreasing a pressure difference between the fluid in the fluid pipe on a first side of the valve body and the fluid in the fluid pipe on a second side of the valve body in a blocking state of the valve body. The first side and the second side of the valve body are arranged so as to sandwich the valve body in an axial direction of the fluid pipe, and a valve opening step of opening the valve body.

A repair boot for an air intake assembly having an air intake duct. The repair boot is open between its ends and has a collar with a first interior dimension that is selected to complement the air intake duct and a second interior diameter that is selected to engage a surrounding flange on the exterior of air intake duct.

A repair pipe and method for repairing a standard sized PVC pipe having a hole or other pipe damage so the PVC pipe can be used to transfer fluid. The repair pipe has a tubular body that is selected with a length to extend across a cutout section of the PVC pipe and an inside diameter only slightly larger than the outside diameter of the PVC pipe to provide a small gap between the two pipes. The method comprises the steps of sliding the repair pipe over one end of the PVC pipe to provide an exposed area at the end of the PVC pipe, placing adhesive on the exposed area and on the exposed area of the opposite end of the PVC pipe and then sliding the repair pipe across the cutout section to position the repair pipe over the glued areas of the PVC pipe.

An example shut-off device includes an upper valve body, and a lower valve body. The lower valve body connects to the upper valve body to surround a section of a pipe to form a chamber therein. A cutting blade in the chamber is tightening against the pipe to cut through the pipe and at least partially seal an opening in the cut pipe. Following a repair to the pipe, the cutting blade may be operated as a gate valve, opening to permit fluid flow through the pipe, and closing to at least partially restrict or fully stop fluid flow through the pipe. Also disclosed is an emergency repair for a pipe including a sleeve housing configured to be opened and closed around a portion of a pipe to be repaired, and a tightening mechanism configured to reduce an inner diameter and tighten against the pipe to be repaired.

A pipe loosening device and methods are shown. In one example, the pipe loosening device enables a method wherein a pipe to be replaced is deformed but not burst, and a portion of a sidewall of the pipe is forced outward into the surrounding soil to compact a local region of the surrounding soil and loosen the existing pipe. The pipe may then pulled from the ground along an axis of the pipe.

A pipe loosening device and methods are shown. In one example, the pipe loosening device enables a method wherein a pipe to be replaced is deformed but not burst, and a portion of a sidewall of the pipe is forced outward into the surrounding soil to compact a local region of the surrounding soil and loosen the existing pipe. The pipe may then pulled from the ground along an axis of the pipe.

A coupling can include a coupling body having an axis, an axial length, an axial center, axial ends and an inner surface comprising an inner diameter that is substantially constant over an entirety of the axial length. A single shoulder can protrude radially inward relative to the axis from the inner surface, such that the inner surface has no other shoulders. In a version, the single shoulder is not axially aligned with the axial center of the coupling body.

A universal device for replacing worn or lacerated parts of connecting conduits between components of climate control or cooling or hydraulic systems for the connection between components of new climate control or cooling or hydraulic systems, comprising a metal sleeve provided at an end of a coupling for pipes joined to it in a sealed fashion, designed to be fitted and clamped on a stretch of rigid pipe joined to a connector for connection of the connecting conduit to a component, and at the other end of a fitting for connection with a flexible hose designed to replace the worn or lacerated connecting conduit. The sleeve can be rectilinear or curved with angle of approximately 45 or approximately 90. The previous device is prepared in a kit according to different sizes.