The present invention provides leakage plugging devices and methods for sealing a leakage at a remote site in a pipe, the device including a porous carrier plug of a deformable material including pores and at least one sealant composition disposed in the pores, wherein the porous carrier plug is adapted to transport the at least one sealant composition from a first site to a remote site and to plug the leakage at the remote site.

A profile includes: a sidewall, a lumen for a fluid path, and an end, the profile including a thermoset material, wherein the profile includes a sealed end without an external bonding material, wherein the sealed end withstands a seal integrity pressure test of at least 1 psi, such as at least 5 psi, such as at least 10 psi, such as at least 15 psi, or even at least 20 psi air pressure for about 30 minutes under dry and wet conditions.

A system and method for remote detection, marking and/or sealing leaks in pipe or duct networks are provided. Aerosolized sealant particles that have a surface tackiness that diminishes over time are introduced into the pipe interior. A pressure differential is created and the micron scale particles adhere to the leak edges and to other particles as they are brought to the leaks and then leave the gas streamlines. Control of particle size, drying rate and particle residence time in the pipe interior allows control over the treatment area so that leaks are sealed in the pipes without sealing purposeful openings such as pilot lights or gas valves. This control also produces seals in duct systems with minimal tack at the time the duct systems are returned to service. Particles that do not participate in the formation of a seal can be collected or flushed through the system.

The present invention provides methods and systems for an upstream pipe plug that includes a first bulkhead, a second bulkhead, a vent pipe engaged to the second bulkhead, and an insertion pipe engaged to the second bulkhead.

A fluid leak repair kit, comprising: a putty; a self-amalgamating tape; and a composite material for use in encompassing the self-amalgamating tape, said composite material comprising a flexible sheet or tape and a matrix component for binding the flexible sheet or tape, the matrix component comprising a resin or water-activated matrix component which, when cured, forms an outer shell.

Provided are cryogenic injection compositions, methods and systems to introduce a cryogenic injection composition into a fluid within a conduit such that at least a portion of the temperature of the fluid is reduced to a temperature below which at least a portion of the fluid becomes a solid thereby reversibly plugging the conduit. Also provided are methods and systems for cooling or freezing a conduit and a fluid therein using a pressurized fluid cryogen as a thermal transfer fluid for controlled removal of thermal energy from a thermal conducting metal conduit and a fluid contained therein.

Provided are magneto-cryogenic valves, methods and systems that extract thermal energy from a fluid within a conduit such that the temperature of at least a portion of the fluid is reduced to a temperature below which at least a portion of the fluid becomes a solid thereby forming a frozen plug of fluid and magnetically susceptible particles that reversibly plugs the conduit, preventing flow of fluid past the plug. Also provided are methods and systems for temporarily preventing the flow of fluid in a conduit.

A system and method for remote detection, marking and/or sealing leaks in pipe or duct networks are provided. Aerosolized sealant particles that have a surface tackiness that diminishes over time are introduced into the pipe interior. A pressure differential is created and the micron scale particles adhere to the leak edges and to other particles as they are brought to the leaks and then leave the gas streamlines. Control of particle size, drying rate and particle residence time in the pipe interior allows control over the treatment area so that leaks are sealed in the pipes without sealing purposeful openings such as pilot lights or gas valves. This control also produces seals in duct systems with minimal tack at the time the duct systems are returned to service. Particles that do not participate in the formation of a seal can be collected or flushed through the system.

A liquid cooling system includes first and second coolant tubes and a coupler to couple the first coolant tube to the second coolant tube. The first coolant tube receives coolant liquid from a first element of the liquid cooling system. The second coolant tube provides the coolant liquid to a second element of the liquid cooling system. The coupler is configured to receive an electrical signal to constrict a flow of the coolant liquid.