Disclosed is a pipe coupling module for coupling a distribution pipe and a flexible pipe in a water distribution system. The pipe coupling module includes a pipe branch section diverging from the distribution pipe, a pipe connection socket coupled directly to the pipe branch section, and a pipe joint unit coupling the flexible pipe, wherein the pipe branch section and the pipe connection socket are formed of chlorinated polyvinyl chloride (CPVC), and are joined by means of a solvent cement.

An enhanced seal may comprise an inner portion and an outer portion. The inner portion may comprise an inner cylindrical portion and an inner annular portion. The outer portion may comprise an outer cylindrical portion and an outer annular portion. The inner portion may be made of a harder material than the outer portion and may provide support to the outer portion.

A connector for flexible tubing comprises a first hollow insert for allowing fluid flow, having a proximal end configured to fit inside the tubing, a first outer part, a joining member rigidly connecting the first insert to the outer part at a region spaced from the proximal end of the first insert and a generally annular gap between the first insert and the first outer part, which forms a tubing accepting opening at or adjacent the proximal end of the insert, the first outer part further comprising plural resilient protrusions extending into the gap, allowing the tubing to be inserted, but resisting removal of the tubing once inserted and wherein at least the insert, the joining member and the outer part are formed as a single integral molding.

A tube coupling system serves for providing annular flow through a flexible annular double lumen tube between fluid reservoir(s) and flexible connection pieces of an annular double lumen device. The tube coupling system has a first coupling component and a second coupling component and an end fitting system. The first coupling component that has a female coupling part and a male coupling part adapted for coupling to a proximal end of the flexible annular double lumen tube. The second coupling component has a second interior pipe that axially extends inside a second exterior pipe, a first end fitting adapted for coupling to at least the female coupling part of the first coupling component, and a second end fitting adapted for coupling to any of the flexible annular double lumen tube or the flexible connection pieces of an annular double lumen device.

A fluid-transfer coupling device designed to couple a rigid male endpiece to a flexible female pipe and to the production method therefor. The device includes a sleeve for gripping around the pipe and locking the endpiece, the sleeve having a radially inner part surrounding an annular sealing lining mounted in abutment on the endpiece; and a metal socket having a tubular portion gripped by the pipe and ending in a collar formed by a radial step which extends in an axial end and has a radial height, the axial end being mounted inside and in contact with the radially inner part and forming the base of a groove receiving the lining, the device comprising means for fitting the sleeve to the collar and comprising a continuous peripheral projection formed in one piece with the sleeve. According to the invention the projection projects radially in abutment against the step aver most of the radial height.

A fluid-connection device capable of and intended for connecting a flexible pipe to a flexible or rigid pipe or enclosure in a biopharmaceutical assembly such as to provide fluid communication between two fluid spaces, including a first connector in fluid communication with the first fluid space, a second connector in fluid communication with the second fluid space, the first connector and the second connector optionally being coupled together in a coupling position, the first connector including a tubular nozzle which can be inserted in one end of the pipe, a pipe clamp being arranged around the end of the tube in order to clamp the pipe onto the tubular nozzle of the first connector, the second connector including protection elements which, in the coupling position, are positioned radially at least partially opposite the pipe clamp, whereby the pipe clamp cannot come into direct contact with external elements.

A fuel connector of a fuel system is adapted to flow fuel, and includes male and female components. The male component includes a plurality of barbs each projecting radially outward, spaced axially from one-another and being circumferentially continuous. The female component includes a plurality of reinforcement rings being in a predefined axial relationship to the respective plurality of barbs when connected.

A valve or other device is attached to the end of a garden hose by means of an adapter that is first attached by swaging to an end of the hose. The adapter has a prong end that is pushed into the bore of the valve and is held there irreversibly by a retaining ring that is carried in a groove of the prong end, to mate with a groove in the bore. An O-ring seal prevents leakage.

A hose end adaptor for holding an inner component to be nested within an outer tube of a hose includes a first support portion for receiving the outer tube and a second support portion on which a component to be nested within the outer tube is mountable.

Hose has a body (3) and a mouthpiece (1) connected with the body (3). The mouthpiece (1) is slidably placed against the body (3); it is designed for mounting of the end of the hose and it has a thickening (2). The ending has a circumferential stop (4) placed in the axis of the mouthpiece (1), whereby the stop (4) has on its circumference a touch surface which is oriented inside, against the thickening (2) on the mouthpiece (1). The mouthpiece (1) can be sealed by sealing ring (7) against the body (3), whereby the ring (7) is placed in the sealing zone (9), or the mouthpiece (1) can be connected with the body (3) by a flexible bellow. During the movement of the mouthpiece (1) outside the touch surface of the stop (4) and the outer surface of the hose in the zone with the thickening (2) draw closer and the hose is held on the mouthpiece (1) by the underpressure between the surface of the stop (4) and the thickening (2). The increasing pressure in the hose increases the underpressure of the hose on the mouthpiece (1 ) which increases the sealing effect of the joint.