In a connecting coupling (1), it is provided that on at least one rib (8) of a rib structure (7) of a hose nipple (6), at least two rib portions (9, 10) are oriented at an angle relative to one another such that the course directions (17, 18) in the rib portions (9, 10) are oriented at an angle relative to one another.

In a connecting coupling (1), it is provided that on at least one rib (8) of a rib structure (7) of a hose nipple (6), at least two rib portions (9, 10) are oriented at an angle relative to one another such that the course directions (17, 18) in the rib portions (9, 10) are oriented at an angle relative to one another.

An adapter for an expandable hose is an apparatus used to connect an expandable hose to other fluid management tools. The apparatus is also configured to prevent leakages in multi-channel expandable hoses. An objective of the apparatus is to provide a connection for expandable hoses. The apparatus is designed to prevent leakage between expandable hoses and the apparatus. A threaded connector enables attachment of the expandable hose to other hoses. Another unit fits inside the inner channel of an expandable hose, while a third part surrounds the inner channel of the expandable hose. An annular fastener secures the outer channel of the expandable hose to the inner channel. A cover or housing may be added to protect components from damage due to external stimuli. Altogether, the apparatus enables a user to securely attach an expandable hose to a spout, faucet, spicket, another hose, or a variety of other devices.

Embodiments disclosed herein provide systems and methods for water aeration in a tank or other body of water that a specialized coupling assembly and flexible hose connectors rather than the commonly used rigid connector elements. The coupling assembly and flexible hose connectors utilized in the aeration grid system provide a more cost effective and flexible system that allows almost limitless configurations of the diffuser elements, depending on the intended application. Further, the coupling assembly and flexible hose connectors enable use with a wide variety of air supply pipe diameters without the necessity of providing a fitting or adapter for each pipe opening. The capability of the aeration system to be readily adapted to different sizes of treatment tanks or ponds, for example, allows the installation and use of a more flexible, prefabricated, or modular, and ultimately more efficient aeration system.

Embodiments disclosed herein provide systems and methods for water aeration in a tank or other body of water that a specialized coupling assembly and flexible hose connectors rather than the commonly used rigid connector elements. The coupling assembly and flexible hose connectors utilized in the aeration grid system provide a more cost effective and flexible system that allows almost limitless configurations of the diffuser elements, depending on the intended application. Further, the coupling assembly and flexible hose connectors enable use with a wide variety of air supply pipe diameters without the necessity of providing a fitting or adapter for each pipe opening. The capability of the aeration system to be readily adapted to different sizes of treatment tanks or ponds, for example, allows the installation and use of a more flexible, prefabricated, or modular, and ultimately more efficient aeration system.

A fluid delivery system having a safety system with interchangeable parts. Also a safety system having a conduit specifically designed to withstand ultra high-pressure fluids exceeding 24,000 psi.

A method of making a hose connection for a hose, including at least the following steps of processing of a metal sheet: drawing for the creation of a semi-processed axially hollow cylindrical piece having a base end and a top end; opening of the base end of the semi-processed piece; forming of an external flange of the semi-processed piece; and forming by a mould of a terminal section of the semi-processed piece comprising the base end for the creation of at least one tooth of hooking to the hose, the mould subjecting the terminal section of the semi-processed piece to an axial compression of a magnitude such as to generate on the terminal section of the semi-finished piece a plastic deformation of radial expansion through which the terminal section shapes to the surfaces of the mould.

A method of making a hose connection for a hose, including at least the following steps of processing of a metal sheet: drawing for the creation of a semi-processed axially hollow cylindrical piece having a base end and a top end; opening of the base end of the semi-processed piece; forming of an external flange of the semi-processed piece; and forming by a mould of a terminal section of the semi-processed piece comprising the base end for the creation of at least one tooth of hooking to the hose, the mould subjecting the terminal section of the semi-processed piece to an axial compression of a magnitude such as to generate on the terminal section of the semi-finished piece a plastic deformation of radial expansion through which the terminal section shapes to the surfaces of the mould.

A coupling device is provided. The coupling device may include a stem having a first end, a second end, a groove, and a threaded portion. A first engagement member may be disposed over the stem between the first end and second end. The first engagement member may be movable relative to the stem. An inner sealing member may be disposed in the groove. When the first engagement member is in a first position, the inner sealing member may be retained in the groove, seal against a surface of the stem, and may not be removed. When the first engagement member is in a second position, the inner sealing member may be retained in the groove, does not seal against the surface of the stem, and may be removed. The coupling device may include a washer, an outer sealing member, and a second engagement member disposed over the stem.

A coupling device is provided. The coupling device may include a stem having a first end, a second end, a groove, and a threaded portion. A first engagement member may be disposed over the stem between the first end and second end. The first engagement member may be movable relative to the stem. An inner sealing member may be disposed in the groove. When the first engagement member is in a first position, the inner sealing member may be retained in the groove, seal against a surface of the stem, and may not be removed. When the first engagement member is in a second position, the inner sealing member may be retained in the groove, does not seal against the surface of the stem, and may be removed. The coupling device may include a washer, an outer sealing member, and a second engagement member disposed over the stem.