A device for the detachable connection of a first tubular component and a second tubular component, wherein the first tubular component has a flange-like thickening in an end region facing the second component, wherein a screw nut is provided as the second tubular component which is dimensioned such that the inner opening of the screw nut can be applied over the flange-like thickening onto the first tubular component, wherein two passages located radially next to one another are provided in the outer wall of the screw nut, and wherein a flat, clamp-shaped holding component is provided, having two inner brackets corresponding to the two passages of the screw nut so that the two inner brackets can be pushed into the passages of the screw nut. The screw nut is fastened to the first component in connection with the flange-like thickening of the first component.

A clamp can be used to further secure the connection between a flexible tube and a tubing connector and to eliminate or diminish fluid stasis near the connection interface. The clamp can include a hollow member having a passageway extending through the hollow member, an internal thread in the passageway, and a clamping surface in the passageway. The passageway is configured to receive the flexible tube. The internal thread is configured to engage the flexible tube and has a first diameter. The clamping surface has a second diameter less than the first diameter. A hub may be used as an adapter between the clamp and the tube.

A clamp can be used to further secure the connection between a flexible tube and a tubing connector and to eliminate or diminish fluid stasis near the connection interface. The clamp can include a hollow member having a passageway extending through the hollow member, an internal thread in the passageway, and a clamping surface in the passageway. The passageway is configured to receive the flexible tube. The internal thread is configured to engage the flexible tube and has a first diameter. The clamping surface has a second diameter less than the first diameter. A hub may be used as an adapter between the clamp and the tube.

A hose adapter for use in an automated pool cleaning system is provided. The adapter attaches at one end to the outlet of a dedicated water return line in a swimming pool and at an opposite end to a pool cleaner hose. The adapter has an extension arm that secures the hose at an elevated position above the water return line. By elevating the hose, the adapter prevents kinking and tangling in the hose so that the automated cleaning system operates more effectively.

An arrangement having a coupling connection comprising two coupling parts. The coupling parts can be connected by means of a screw connection and form a fluid channel. On the first coupling part there is a multi-start thread as a connection means as part of the screw connection. On the second coupling part there is a multi-start mating thread as a connection means as a further part of the screw connection.

An arrangement having a coupling connection comprising two coupling parts. The coupling parts can be connected by means of a screw connection and form a fluid channel. On the first coupling part there is a multi-start thread as a connection means as part of the screw connection. On the second coupling part there is a multi-start mating thread as a connection means as a further part of the screw connection.

A fitting assembly for connection to a flexible duct includes a fitting and a ferrule extending from the fitting. The ferrule includes a first end configured for insertion into an open end of the flexible duct, a second end adjacent to the fitting, and a sidewall extending between the first end and the second end. The sidewall defines a minor diameter adjacent the first end and a major diameter spaced apart from the minor diameter. The ferrule further includes a ferrule thread extending radially outward from the sidewall. The minor diameter is less than or equal to an inner diameter of the flexible duct with the flexible duct fully elongated, and the major diameter is greater than the inner diameter of the flexible duct with the flexible duct fully elongated.

A fitting assembly for connection to a flexible duct includes a fitting and a ferrule extending from the fitting. The ferrule includes a first end configured for insertion into an open end of the flexible duct, a second end adjacent to the fitting, and a sidewall extending between the first end and the second end. The sidewall defines a minor diameter adjacent the first end and a major diameter spaced apart from the minor diameter. The ferrule further includes a ferrule thread extending radially outward from the sidewall. The minor diameter is less than or equal to an inner diameter of the flexible duct with the flexible duct fully elongated, and the major diameter is greater than the inner diameter of the flexible duct with the flexible duct fully elongated.

A sprinkler system includes a fitting and a sprinkler. The fitting includes a hose and at least one adapter coupled with the hose. The at least one adapter includes a first engagement member and a receiver adjacent to the first engagement member. The receiver has a greater inner diameter than the first engagement member. The sprinkler includes a body, at least one flange extending from the body, and a second engagement member extending from the at least one flange.

A sprinkler system includes a fitting and a sprinkler. The fitting includes a hose and at least one adapter coupled with the hose. The at least one adapter includes a first engagement member and a receiver adjacent to the first engagement member. The receiver has a greater inner diameter than the first engagement member. The sprinkler includes a body, at least one flange extending from the body, and a second engagement member extending from the at least one flange.