A system may a first frac tree having a first inlet, a manifold having a first fluid outlet, and a first flexible pipe. The first flexible pipe may include a first end of the first flexible pipe coupled to the first fluid outlet; a second end of the first flexible pipe is coupled to the first inlet; and a first outer shell rotationally mounted on the manifold, the first outer shell extends from the manifold a length between the first end and the second end. The first outer shell may extend from the manifold a length between the first end and the second end. Additionally, the first outer shell is curved to have a radius to arch the first flexible pipe from the manifold to the frac tree.

A system may a first frac tree having a first inlet, a manifold having a first fluid outlet, and a first flexible pipe. The first flexible pipe may include a first end of the first flexible pipe coupled to the first fluid outlet; a second end of the first flexible pipe is coupled to the first inlet; and a first outer shell rotationally mounted on the manifold, the first outer shell extends from the manifold a length between the first end and the second end. The first outer shell may extend from the manifold a length between the first end and the second end. Additionally, the first outer shell is curved to have a radius to arch the first flexible pipe from the manifold to the frac tree.

In a method of joining a structure to a water-filled pipeline aboard a reel-lay vessel, a trailing end portion of the pipeline is suspended upright on a reel-lay tower. Water is drained from the trailing end portion while being retained in an inclined portion of the pipeline extending from the tower to a reel of the vessel and in a spooled portion of the pipeline coiled on the reel. The structure is joined to a trailing end of the pipeline after inserting a pig into the trailing end portion through the trailing end. Pumping additional water into a leading end of the pipeline on the reel propels the pig from the trailing end portion into a conduit of the structure while flooding the trailing end portion. This expels air through a port of the structure that was trapped in the trailing end portion between the pig and the structure.

In a method of joining a structure to a water-filled pipeline aboard a reel-lay vessel, a trailing end portion of the pipeline is suspended upright on a reel-lay tower. Water is drained from the trailing end portion while being retained in an inclined portion of the pipeline extending from the tower to a reel of the vessel and in a spooled portion of the pipeline coiled on the reel. The structure is joined to a trailing end of the pipeline after inserting a pig into the trailing end portion through the trailing end. Pumping additional water into a leading end of the pipeline on the reel propels the pig from the trailing end portion into a conduit of the structure while flooding the trailing end portion. This expels air through a port of the structure that was trapped in the trailing end portion between the pig and the structure.

A drainage device for an above-ground pool, and an above-ground pool including the drainage device are provided. The drainage device includes a drainage pipe, with inlet and outlet ends, and a drainage valve connected to the inlet end of the drainage pipe. The drainage valve includes a water inlet periphery, defining a water inlet in fluid communication with the inlet end of the drainage pipe, and a connecting member disposed circumferentially around the water inlet periphery. The connecting member is radially spaced apart from the water inlet periphery. The connecting member may be formed by injection molding around the water inlet periphery.

A drain configured to evacuate leaks of fluid, such as fuel, from a leak collecting system of an aircraft, the drain comprising a rigid tube secured to a plate, the plate being configured to be attached to an external wall of the aircraft, a flexible pipe configured to join the collecting system to the rigid tube, one end of the flexible pipe being received within the rigid tube. The rigid tube comprises a channel, the channel being configured to allow separation of the rigid tube from the plate at the location of the channel.

A drain configured to evacuate leaks of fluid, such as fuel, from a leak collecting system of an aircraft, the drain comprising a rigid tube secured to a plate, the plate being configured to be attached to an external wall of the aircraft, a flexible pipe configured to join the collecting system to the rigid tube, one end of the flexible pipe being received within the rigid tube. The rigid tube comprises a channel, the channel being configured to allow separation of the rigid tube from the plate at the location of the channel.

A connector arrangement for conducting liquid urea solutions. The connector arrangement includes a distributor, with at least three connecting elements, and a connecting component, located between the connecting elements, with inner channels running within the connecting component. Three individual lines having connecting means are connected to the connecting elements of the distributor by the connecting means, and a housing surrounds the distributor and at least a part of the individual line. The distributor is disposed in the housing together with end sections of the connected individual lines. A channel line inner diameter of the inner channels and a total length of the inner channels and a wall thickness of the distributor in the connecting component are dimensioned such that ice pressure on the distributor, which occurs as a result of the freezing of a liquid within the distributor, does not result in any destruction.

In a pipe joint, a spigot is inserted into a socket; a lock ring is accommodated in a lock ring-accommodating groove formed in the inner circumference of the socket; and an engaging part formed in the outer circumference of the spigot, wherein the engaging part engages with the lock ring from a back side of the socket in a separation direction A of the spigot, thereby preventing the spigot from separating from the socket. The engaging part is formed at a position receding from a distal end of the spigot in the separation direction A of the spigot. A bending suppressing member for restricting the socket and the spigot in a bending direction C is provided between the inner circumference of the socket and the outer circumference of the spigot in the range between the distal end of the spigot and the engaging part.

In a pipe joint, a spigot is inserted into a socket; a lock ring is accommodated in a lock ring-accommodating groove formed in the inner circumference of the socket; and an engaging part formed in the outer circumference of the spigot, wherein the engaging part engages with the lock ring from a back side of the socket in a separation direction A of the spigot, thereby preventing the spigot from separating from the socket. The engaging part is formed at a position receding from a distal end of the spigot in the separation direction A of the spigot. A bending suppressing member for restricting the socket and the spigot in a bending direction C is provided between the inner circumference of the socket and the outer circumference of the spigot in the range between the distal end of the spigot and the engaging part.