[Problem] To provide a pipe joint allowing reliable connection to a pipe P without flaring.

[Means of solving problem] The pipe joint includes a flare joint body 1F, a cap nut 2, and a stop ring 3. A curved pressure-contacting slope surface 32 of the stop ring 3 contacts a slope surface 5 with reduced-diameter tip of the flare joint body 1F under pressure to establish sealing by means of mutual contact between metallic surfaces. The pipe P is grasped in a tightly pressure-contacting state using a back tooth and a front tooth formed at a tip head 37 of a substantially cylindrical thin part 35 of the stop ring 3.

A pipe fitting for conveying a medium, including an inlet at which the medium enters in a first direction perpendicular to an inlet cross section, and an outlet at which the medium leaves in a second direction perpendicular to an outlet cross section, wherein the two directions enclose an angle. The pipe fitting has three parts, wherein in each case two parts bearing against one another at a contact point, wherein in each case two parts at their contact point being rotatable relative to one another about the axis of the flow direction at the contact point in order to change the angle, and wherein the two contact points being spaced apart from one another in the flow direction.

A refrigerator includes a water system and a valve. The water system is configured to direct water to a dispenser or an ice maker. The valve includes a valve body, an inlet port, and a clutch. The valve is configured to connect the water system to a water source. The inlet port is configured to receive a tube to establish fluid communication with the water source and to engage a nut to secure the tube to the inlet port. The clutch is disposed between the inlet port and the valve body and is configured to slip in response to an applied torque to the inlet port exceeding a threshold.

A universal nut includes at least one shell including a base wall and a skirt extending axially away from the base wall and having an internal thread, and a thread adapter threaded to the internal thread of the skirt of the at least one shell. A universal fluid connector includes the universal nut, and a conduit extending along a conduit axis and including a tubing portion and a nut coupling portion. The base wall of the at least one shell couples to the nut coupling portion of the conduit and has a conduit aperture through which the conduit extends.

A hose connecting device has a connector, an inner locking ring, an outer connector and a tubal body. The connector has an insertion section and an engaging section, the engaging section has a size greater than the insertion section, and the engaging section further has a stopping ring at a top end. The inner locking ring is jacketed onto the engaging section of the connector and abutting the stopping ring of the connector. The inner locking ring has an outer threaded section and an abutting portion disposed at a bottom end of the inner locking ring. The outer connector has one of a female connector and a male connector, and a channel, the channel has a positioning step at a middle portion, an inner threaded section disposed below the positioning step of the channel. The tubal body is jacketed onto the insertion section of the connector.

A microfluidic interconnect system and method for assembly thereof is described. The microfluidic interconnect has a port and a seal, with the port having a reverse taper. The port has a first port end, a second port end, and an inner port surface with a tapered portion. Each port end has an opening with a diameter, and in certain embodiments, the diameter of the first port end is smaller than the diameter of the second port end. The seal has a first end and a second end, and each seal end has a rim and an opening with an inner diameter and an outer diameter. The seal also has an inner surface and an outer surface, where in certain embodiments, each surface has a tapered portion. In certain embodiments, the inner diameter of the first seal end is equal to or larger than the inner diameter of the second seal end, the outer diameter of the first seal end is equal to or smaller than the outer diameter of the second seal end, and the outer diameter of the second seal end is larger than the outer diameter of each port end. In certain embodiments, a tube is slidably coupled to the inner surface of the seal, and the tube has an outer diameter that is equal to or larger than the inner diameter of the second seal end.

A pipe connecting device configured to connect at least two pipes, comprises a pipe including a catching ledge at a connecting end portion thereof and made of stainless steel or copper; a first connecting member formed in a cylindrical shape and having a spring seating portion on which a circular plate spring is seated, a pipe through-hole through which the pipe passes, and a screw recess provided inside the first connecting member; and a second connecting member provided with an o-ring seating portion on which an o-ring is seated at a side at which the pipe is coupled and an outer surface having a screw thread, wherein a through-portion having the same inner diameter as the pipe is formed in the second connecting member.

A system and method for joining tubing of different sizes including a first connector including a first and a second projection and a lumen extending therethrough. The first projection has an outer diameter larger than an outer diameter of the second projection. A first coupling includes a first and second coupling member. The first coupling member has a first body including a first aperture extending therethrough along a length thereof, the first body including threads. The second coupling member includes a second body having a second aperture extending therethrough along a length thereof. The second body includes threads complimentary with the threads of the first coupling member permitting the first and second member to be threadedly engaged, and the first aperture has a diameter larger than a diameter of the second aperture.

A dielectric union ball valve utilizes a non-conductive separation sleeve to prevent contact between the union and the nut of a dielectric valve assembly. The valve assembly can optionally include an independently operated drain valve port to permit draining of the valve assembly. The use and positioning of a non-conductive separation sleeve mitigates potential galvanic reaction between dissimilar pipes and/or fittings that are connected to the valve assembly.

A joint that is coupled to a cylindrical fluid discharger whose peripheral edge expands radially outward. The joint includes a cylindrical coupler that is coupled to the fluid discharger and has a male screw on an outer peripheral surface thereof, an engager that engages with the peripheral edge, and a tubular body that has a female screw to be coupled to the male screw on an inner peripheral surface thereof, and switches between a first state in which the attachment and the detachment of the fluid discharger and the joint are allowed and a second state in which the attachment and the detachment of the fluid discharger and the joint are restricted.