A pressure differential device for attachment to a vessel to be used to smoke or vaporize tobacco or other consumables substances meant to be inhaled for pulmonary applications. The pressure differential device includes a chamber for receiving consumables, a tunnel running through the device, a flange for proper seating in a vessel, and a inner protruding member for attaching tunnel extension such as a straw.

An annular sealing material seals a pipe joint between a socket and a spigot. The sealing material includes a bulb part which is composed of a first bulb, a second bulb located closer to the inner side of the socket than the first bulb, and a narrow part present between the first and second bulbs. The first bulb is pressed against the inner circumferential surface of the socket. The second bulb is pressed against the outer peripheral surface of the spigot. The second bulb is inclined towards the pipe center from the first bulb in a natural state before it is provided between the socket and the spigot. The inner diameter of the second bulb is smaller than the outer diameter of the spigot in the natural state. The second bulb is extensible in the pipe diameter direction due to elastic deformation of the narrow part.

Provided is a pipe connecting sealing member including a projection part includes a body part that is provided between the outer surface of the pipe and the inner surface of the connector to which the pipe is inserted, and is formed to extend in a ring shape along a circumferential direction; and the projection part that is formed in a spiral shape forming an unlimited orbit and projects along the outer surface of the body part.

Fluid connector assembly and methods are usable to establish a sealed fluid connection. The connector assembly comprises a female union connector having an axial bore extending therethrough, internal threads, and an internal shoulder. The connector assembly also comprises two male connectors, each male connector having an axial bore extending therethrough and external threads. The connector assembly further comprises two ring-shaped seals adapted to form a fluid seal between the female union and the male connectors. The first seal contacts the first side of the internal shoulder and a front end of the first male connector to form a fluid seal therebetween. The second seal contacts the second side of the internal shoulder and a front end of the second male connector to form a second fluid seal therebetween.

The present invention concerns a rotatable coupling (60) for connecting pipes, comprising a first hollow female element (61) suited to be connected, for example, to a first pipe portion (51), and a second tubular male element (6) with a first end portion at least partially housed inside the first female element (61) so as to define an inner space for the passage of a fluid, and with a second end portion suited to be connected to a second pipe portion (52). Said first and said second element (61, 6) can be rotated with respect to each other, said second tubular male element (6) comprising a first abutment surface (6S). Furthermore, the rotatable coupling (60) comprises a third hollow tubular element (12) housed inside the first female element and provided with a second abutment surface (1S) substantially opposite the first abutment surface (6S) so as to define a first interspace (I), and the third tubular hollow element (12) can be translated along a direction substantially orthogonal to the first and the second abutment surface (6S, 1S) between a closed configuration, in which the first and the second abutment surface (6S, 1S) are positioned at a minimal mutual distance, and an open configuration, in which the first and the second abutment surface (6S, 1S) are positioned at a distance that exceeds said minimal mutual distance.

A coupling device for a fluid transport tube (100) having an end provided with an internal chamfer (101), the device comprising a body (1) including a cylindrical wall (2) defining a channel (3) having an end segment provided with means for securing the tube end thereto in leaktight manner, these means including an elastically deformable annular sealing element (6) comprising a support ring (61) having an axially projecting first face from which there extends a tubular portion (62) having a free end (63) arranged to bear against the internal chamfer (101) of the tube end (100) in order to be forcibly engaged in the tube end while the tube is being inserted into the end segment.

A coupling device for a fluid transport tube (100) having an end provided with an internal chamfer (101), the device comprising a body (1) including a cylindrical wall (2) defining a channel (3) having an end segment provided with means for securing the tube end thereto in leaktight manner, these means including an elastically deformable annular sealing element (6) comprising a support ring (61) having an axially projecting first face from which there extends a tubular portion (62) having a free end (63) arranged to bear against the internal chamfer (101) of the tube end (100) in order to be forcibly engaged in the tube end while the tube is being inserted into the end segment.

In an agricultural air seeder, a fluid line connection for a pneumatic distribution system, the fluid line connection including a female and male connector. The female connector has an inside diameter with an annular groove, and a discrete seal disposed within said annular groove. The male connector is positioned within the female connector, the male connector having an outside diameter sealed with the seal.

In an agricultural air seeder, a fluid line connection for a pneumatic distribution system, the fluid line connection including a female and male connector. The female connector has an inside diameter with an annular groove, and a discrete seal disposed within said annular groove. The male connector is positioned within the female connector, the male connector having an outside diameter sealed with the seal.

The invention includes a connector for coupling to a composite pipe, and methods for forming the same. The connector has a seal carrier forming a fluid passage that is made of a first material and that includes a seal receiving portion configured to receive at least one seal and a first coupling surface on an outer seal carrier surface. The connector also has an interconnect with a passage configured to receive the seal carrier that is made of a second material and includes a second coupling surface on an inner interconnect surface configured for coupling with the first coupling surface to connect the seal carrier and the interconnect and a third coupling surface on an outer interconnect surface.