A description is given of an internally hollow fitting for the passage of a liquid, in particular water, with a component to restrain unmovably a pipe of an irrigation system, wherein restraining component of the pipe is carried by a ring nut screwing on an external thread of the at least one end of the fitting.

An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.

An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.

A connector assembly has a connector body for housing a free end of a pipe. A mechanical seal arrangement within the body includes a metal annular seal surface configured for arrangement about the pipe and a metal annular seal element configured for fitting about the pipe. The annular seal element is configured for creating a first annular sealing contact for creating a metal-to-metal seal with a metal outer surface of a pipe and a second annular sealing contact for creating a metal-to-metal seal with the annular seal surface. The connector assembly includes an annular loading ring configured for fitting about the pipe. The annular loading ring is configured to be arranged for communication between the body and the pipe. The annular loading ring includes one or more channels or bores extending from an external surface, for use in the application of energising load to the annular seal element within the body. The connector assembly includes a mechanical engagement arrangement for preventing or limiting axial movement of the body relative to the pipe. The annular loading ring is configured to be coupled with the body to prevent relative axial movement between the annular loading ring and the body.

A connector assembly has a connector body for housing a free end of a pipe. A mechanical seal arrangement within the body includes a metal annular seal surface configured for arrangement about the pipe and a metal annular seal element configured for fitting about the pipe. The annular seal element is configured for creating a first annular sealing contact for creating a metal-to-metal seal with a metal outer surface of a pipe and a second annular sealing contact for creating a metal-to-metal seal with the annular seal surface. The connector assembly includes an annular loading ring configured for fitting about the pipe. The annular loading ring is configured to be arranged for communication between the body and the pipe. The annular loading ring includes one or more channels or bores extending from an external surface, for use in the application of energising load to the annular seal element within the body. The connector assembly includes a mechanical engagement arrangement for preventing or limiting axial movement of the body relative to the pipe. The annular loading ring is configured to be coupled with the body to prevent relative axial movement between the annular loading ring and the body.

A tube fitting device for facilitating tube connection position determination includes a fitting body, a pair of fixing nuts, and an O-ring. The fitting body has a cylindrical channel portion into which a first tube and a second tube may be inserted, the cylindrical channel portion comprising an accommodation groove formed therein. Each fixing nut is rotatably coupled to a respective open end of the fitting body and surrounds the first tube and the second tube, respectively. The O-ring is mounted on the accommodation groove and has an inner diameter smaller than that of the cylindrical channel portion such that the inner surface of the O-ring protrudes inside the fitting body to facilitate determining positions of the first tube and the second tube to be inserted into the cylindrical channel of the fitting body.

A tube fitting device for facilitating tube connection position determination includes a fitting body, a pair of fixing nuts, and an O-ring. The fitting body has a cylindrical channel portion into which a first tube and a second tube may be inserted, the cylindrical channel portion comprising an accommodation groove formed therein. Each fixing nut is rotatably coupled to a respective open end of the fitting body and surrounds the first tube and the second tube, respectively. The O-ring is mounted on the accommodation groove and has an inner diameter smaller than that of the cylindrical channel portion such that the inner surface of the O-ring protrudes inside the fitting body to facilitate determining positions of the first tube and the second tube to be inserted into the cylindrical channel of the fitting body.

Provided is a tube fitting and an assembly method therefor. The tube fitting includes: a fitting body having a passage formed therein for supplying a fluid, and a plurality of accommodation spaces formed therein and communicating with the passage; a plurality of tube fixtures which are respectively accommodated in the plurality of accommodation spaces in a state of being fixedly coupled to one end of each of a plurality of tubes, and which connect the one end of each of the plurality of tubes to the passage; a plurality of ferrule members which are respectively accommodated in the plurality of accommodation spaces in a state of being respectively in contact with the plurality of tube fixtures, and which respectively maintain airtightness between the inner circumferential surfaces of the plurality of accommodation spaces and the outer circumferential surfaces of the plurality of tubes; and a plurality of nut bodies which are respectively coupled to the plurality of accommodation spaces to fix the plurality of tube fixtures and the plurality of ferrule members respectively to the plurality of accommodation spaces.

Provided is a tube fitting and an assembly method therefor. The tube fitting includes: a fitting body having a passage formed therein for supplying a fluid, and a plurality of accommodation spaces formed therein and communicating with the passage; a plurality of tube fixtures which are respectively accommodated in the plurality of accommodation spaces in a state of being fixedly coupled to one end of each of a plurality of tubes, and which connect the one end of each of the plurality of tubes to the passage; a plurality of ferrule members which are respectively accommodated in the plurality of accommodation spaces in a state of being respectively in contact with the plurality of tube fixtures, and which respectively maintain airtightness between the inner circumferential surfaces of the plurality of accommodation spaces and the outer circumferential surfaces of the plurality of tubes; and a plurality of nut bodies which are respectively coupled to the plurality of accommodation spaces to fix the plurality of tube fixtures and the plurality of ferrule members respectively to the plurality of accommodation spaces.

A seal assembly includes a connector body having an open end configured for receiving a free end of a pipe and an adaptor for securing at the free end of the pipe. The adaptor has a first ring, configured to be mounted around the circumference of the free end of a pipe, and a second ring configured to cooperate with the first ring in order to drive the first ring into engagement with an outer surface of the pipe. A mechanical interlock arrangement is configured for driving the adaptor in the direction of the connector body, when the adaptor is secured at the free end of the pipe. The mechanical interlock arrangement is further configured for preventing or limiting axial movement of the pipe relative to the connector body, when the adaptor is secured to the outer surface of the pipe and when the free end of the pipe is in sealing contact with a metal seal surface of the connector body.