A pipe-fitting device according to the present invention includes a fitting body and a flare packing. The fitting body has a first end portion with an inner threaded portion, a second end portion, and a narrowest portion between the first end portion of the fitting body and the second end portion of the fitting body. The flare packing has a double plane surface having different inclination angles and is provided inside a cavity of the first end portion of the fitting body.

A pipe-fitting device according to the present invention includes a fitting body and a flare packing. The fitting body has a first end portion with an inner threaded portion, a second end portion, and a narrowest portion between the first end portion of the fitting body and the second end portion of the fitting body. The flare packing has a double plane surface having different inclination angles and is provided inside a cavity of the first end portion of the fitting body.

A split coupler, and methods of making and using such a split coupler, whereby the split coupler includes a first semi-cylindrical member, a second semi-cylindrical member, and an interlocking assembly configured to interlock the first and second semi-cylindrical members to form a substantially cylindrical coupler having a coupler inner surface which defines a throughbore. Additionally, the split coupler can include spiral threads coupled to the coupler inner surface. Furthermore, the split coupler can include a flange inwardly extending from the coupler inner surface.

A pipe-fitting device according to the present invention includes a fitting body, a fixing nut, and a collet. A first end of the fitting body is rotatably connected to an outer circumferential surface of a first pipe, and a second end of the fitting body surrounds an outer surface of a second pipe. A first end of the fixing nut is rotatably connected to an outer circumferential surface of the fitting body, and a second end of the fixing nut surrounds the outer surface of the second pipe. The collet is provided inside the fixing nut and presses the second pipe when the fixing nut is rotated and tightened. The collet includes a seating portion provided inside the fixing nut, a bending portion in which a bending groove is formed, a pressing portion which presses and seals the second pipe, and a protecting portion which protects the pressing portion.

A pipe-fitting device according to the present invention includes a fitting body, a fixing nut, and a collet. A first end of the fitting body is rotatably connected to an outer circumferential surface of a first pipe, and a second end of the fitting body surrounds an outer surface of a second pipe. A first end of the fixing nut is rotatably connected to an outer circumferential surface of the fitting body, and a second end of the fixing nut surrounds the outer surface of the second pipe. The collet is provided inside the fixing nut and presses the second pipe when the fixing nut is rotated and tightened. The collet includes a seating portion provided inside the fixing nut, a bending portion in which a bending groove is formed, a pressing portion which presses and seals the second pipe, and a protecting portion which protects the pressing portion.

A conduit coupling adapter for securing attaching a conduit to an enclosure is disclosed. The conduit coupling adapter generally includes a first end for receiving a conduit and attaching to it via an adhesive, and a second end coupled to the second end comprises threads and is configured for attaching to an enclosure using a locknut.

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 coupling assembly is disclosed, which comprises a first connector for connecting to a tube; a second connector for jointing with the first connector; a first member is adapted to mount on the first connector and operably affixable to the second connector; and a second member is adapted to mount on the second connector, and is capable of being engaged with the first member to prevent separation between the first connector and the second connector.

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 fluid conduit assembly is provided that includes a first conduit coupler, a second conduit coupler and a lock. The second conduit coupler is mated with the first conduit coupler at a threaded interface. The lock is configured to rotationally fix the first conduit coupler with the second conduit coupler. The lock includes a flange, a clip and a fastener. The flange is arranged with the first conduit coupler. The flange is configured with a plurality of flange apertures arranged circumferentially about an axis of the first conduit coupler. The clip is arranged with the second conduit coupler. The clip is configured with a clip aperture. The fastener is mated with the clip aperture and any one of the plurality of flange apertures.