A system for installing hose couplings includes a motor, a drive shaft extending along and axis and powered about the axis by the motor, and a tool rotationally coupled to the drive shaft. The tool includes a hub and two arms extending outward from the hub and defining respective load surfaces such that both arms may tangentially abut a respective hook of a quick coupling for a blast hose when the quick coupling is aligned on the axis.

A coupling fitting comprises a cylindrical first body having a first end portion, a first coupling part having a plurality of first protrusions arranged around the first end portion and having hooks formed thereon, and a first seal material provided on an outer circumference of the first end portion. A gap is formed between the outer circumference and the plurality of first protrusions. When the coupling fitting is coupled with the target fitting, a part of the target fitting is inserted into the gap, the hooks of the plurality of first protrusions engage the target fitting, and the first seal material contacts an inner circumference of the target fitting.

A pipe fitting system, including a first pipe section with at least one male end, a second pipe section with at least one female end, and a connecting means for releasably connecting the pipe sections together such that the male end is at least partially received within the female end. The connecting means comprising releasably engageable first and second connectors associated with the first and second pipe sections respectively, wherein the first connector comprises at least one outwardly extending protrusion and wherein the second connector comprises corresponding recesses adapted to releasable receive the or each protrusion of the first connector. The pipe fitting system is suitable for applications such as end of line connections, repair/replacement of fixed existing pipes, and in enabling temporary removal of pipes for maintenance or access purposes.

A pipe fitting system, including a first pipe section with at least one male end, a second pipe section with at least one female end, and a connecting means for releasably connecting the pipe sections together such that the male end is at least partially received within the female end. The connecting means comprising releasably engageable first and second connectors associated with the first and second pipe sections respectively, wherein the first connector comprises at least one outwardly extending protrusion and wherein the second connector comprises corresponding recesses adapted to releasable receive the or each protrusion of the first connector. The pipe fitting system is suitable for applications such as end of line connections, repair/replacement of fixed existing pipes, and in enabling temporary removal of pipes for maintenance or access purposes.

An embodiment of a fluid valve includes a substantially flat face plate, a receptacle, a cavity, and a drain assembly. The receptacle is disposed in the face plate and has at least one protrusion each configured to engage a respective one of at least one groove of a valve-opening-and-fluid-dispensing device. The cavity has a top end in fluid communication with the receptacle, and has a bottom end. And the drain assembly has a top end in fluid communication with the bottom end of the cavity, has a bottom end, and is configured to allow fluid to drain from the cavity in response to the valve-opening-and-fluid-dispensing device being absent from the receptacle.

A plug having a longitudinal axis includes a plug body having a generally flat sealing surface on an axial end thereof, and a protuberance extending from the axial end generally concentric with the longitudinal axis. The protuberance has a first section contiguous with the plug body, and a second section having a hub portion contiguous with the first section and a plurality of generally evenly spaced arms extending outward from the hub portion. An underside surface of each arm faces the sealing surface of the plug body and has a generally flat portion and a ramped nub thereon projecting toward the sealing surface. The plug may be inserted into a compatible socket having tabs and rotated about the longitudinal axis for sealable engagement with the socket.

A pipe locking connection structure includes a male pipe and a female pipe connected with the male pipe. The male pipe has an outside provided with a slideway and a locking groove. The locking groove is connected to the slideway. An angle is defined between the slideway and the locking groove. The female pipe has an inside provided with a projection. The female pipe is mounted on the male pipe, and the projection is inserted through the slideway until the projection aligns with the locking groove. Then, the female pipe is rotated relative to the male pipe, such that the projection is inserted into and locked in the locking groove. Thus, the female pipe is locked onto the male pipe.

A pipe locking connection structure includes a male pipe and a female pipe connected with the male pipe. The male pipe has an outside provided with a slideway and a locking groove. The locking groove is connected to the slideway. An angle is defined between the slideway and the locking groove. The female pipe has an inside provided with a projection. The female pipe is mounted on the male pipe, and the projection is inserted through the slideway until the projection aligns with the locking groove. Then, the female pipe is rotated relative to the male pipe, such that the projection is inserted into and locked in the locking groove. Thus, the female pipe is locked onto the male pipe.

A dry disconnect device including a first portion defining an outlet and an outlet portion of a fluid pathway and a female valve disposed within the first portion having an extended position, including the female valve being configured to seal the outlet portion, and a retracted position. A second portion defining an inlet and an inlet portion of the fluid pathway is lockingly engageable with the first portion. A male valve is disposed within the second portion including a male valve transition member configured to translate the male valve from an extended position to a retracted position including the male valve being configured to seal the inlet portion. The extended position of the male valve causes the female valve to transition from the extended position to the retracted position and causes the outlet portion and the inlet portion of the fluid pathway to be in fluid communication with each other.

A dry disconnect device including a first portion defining an outlet and an outlet portion of a fluid pathway and a female valve disposed within the first portion having an extended position, including the female valve being configured to seal the outlet portion, and a retracted position. A second portion defining an inlet and an inlet portion of the fluid pathway is lockingly engageable with the first portion. A male valve is disposed within the second portion including a male valve transition member configured to translate the male valve from an extended position to a retracted position including the male valve being configured to seal the inlet portion. The extended position of the male valve causes the female valve to transition from the extended position to the retracted position and causes the outlet portion and the inlet portion of the fluid pathway to be in fluid communication with each other.