A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

An apparatus comprising an inner ferrule and an outer ferrule. The inner ferrule comprises a plurality of engagement sections that define a plurality of gaps between the plurality of engagement sections. The outer ferrule is disposed around at least a portion of the inner ferrule. The outer ferrule comprises an engagement area mechanically joined to the plurality of engagement sections to join the inner ferrule to the outer ferrule.

An apparatus comprising an inner ferrule and an outer ferrule. The inner ferrule comprises a plurality of engagement sections that define a plurality of gaps between the plurality of engagement sections. The outer ferrule is disposed around at least a portion of the inner ferrule. The outer ferrule comprises an engagement area mechanically joined to the plurality of engagement sections to join the inner ferrule to the outer ferrule.

A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

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 connection assembly is disclosed for connecting a magnetic separator into a central heating system circuit, the magnetic separator including a housing, a separation chamber within the housing, and externally threaded inlet and outlet ports extending from the housing. The connection assembly comprises: a fitment adapted to be received within at least one of the ports of the separator, the fitment including a bore for carrying fluid from/to the central heating circuit to/from the separator; a threaded connector disposed around the bore for securing the fitment to the or each port, the threaded connector having a hand grip area for facilitating tightening of the connector by hand; and a removable force transfer element receivable between the fitment and the threaded connector for transferring force between the threaded connector and the fitment.

An apparatus comprising an inner ferrule and an outer ferrule. The inner ferrule comprises a plurality of engagement sections that define a plurality of gaps between the plurality of engagement sections. The outer ferrule is disposed around at least a portion of the inner ferrule. The outer ferrule comprises an engagement area mechanically joined to the plurality of engagement sections to join the inner ferrule to the outer ferrule.

A coupling for connecting a compressed air source to an air motor, having a housing with a housing channel leading to a compressed air connection and a piston axially adjustable in the housing channel- and force-loaded by a spring element having a piston channel which, when the coupling is connected to the air motor, merges into a connecting channel present in a pin element of the air motor. The piston is adjustable in the direction of the compressed air connection by the pin element against the force applied by the spring element. The spring element runs between the compressed air connection and the compressed air connection side area of the piston. Radial openings extend from the compressed air connection side area of the piston channel. An exhaust air channel connected to the air motor extends in the wall of the housing.

A method of sealing the interstice in double-walled pipe includes the steps of applying a first sealing piece to an inner pipe of the double-walled pipe, wherein the first sealing piece covers a portion of the circumference of the inner pipe; and applying a second sealing piece to the inner pipe of the double-walled pipe, wherein the second sealing piece covers the remainder of the circumference of the inner pipe. The method further includes the step of attaching the first sealing piece to the second sealing piece forming a sealer; wherein the sealer is disposed in an annular space located between the inner pipe and an outer pipe. A sealer configured to seal an opening between pipes in a double-walled pipe includes a first sealing piece having a rounded cross-section with an attachment portion configured to engage a corresponding attachment portion disposed on a second sealing piece.

Various embodiments of the teachings herein include a nipple. Some example nipples include: a fluid passage; a housing; a valve for the fluid passage; and a relief valve for the valve. The relief valve may include: a first sleeve axially movable for sealing against a first seal of the housing; a second sleeve for sealing against a second seal of the housing; and a third seal for sealing between the first sleeve and the second sleeve. Relative axial movement between the first sleeve and the second sleeve opens or closes, respectively by the direction of the axial movement. The relief valve, the first seal, and the third seal are arranged at a set radial distance from a central axis of the fluid passage.