A plenum housing includes a plurality of construction panels and a plurality of compression seal groove connectors secured between the plurality of construction panels. Each of the plurality of compression seal groove connectors includes a recess having at least one interior surface with at least one compression seal groove.

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.

A breakaway flange coupling device includes a pair of flanges, each have a first face which comprises a mating surface. A first flange is magnetic and a second flange is either paramagnetic or is magnetic and has opposing poles relative to the first flange. The flanges thus are selectively magnetically couplable with the mating surfaces in abutment and with a gasket compressed between them. First and second conduits, which extends from a liquid supply source and a liquid receiving vessel, respectively, are attachable to the flanges by a pair of connectors. The flanges fluidically couple the liquid receiving vessel to the liquid supply source via the first and second conduits. The flanges separate upon movement of either the liquid supply source or the liquid receiving vessel.

A pipe element has a circumferential groove with a surface portion oriented at an angle with respect to its longitudinal axis. A surface portion of the groove adjacent to the angled surface portion is oriented perpendicular to the longitudinal axis. A mechanical coupling has projecting keys that engage the groove. The keys have mating surfaces that contact both the perpendicular and angled surface portions of the groove. When the pipe element and coupling are used in combination to form a pipe joint, axial load on the pipe, resisted by the mechanical coupling, is shared between the perpendicular and angled surface portions which results in a pipe joint that can withstand higher internal pressure than if the axial load were borne by the perpendicular surface portion alone.

A target material supply apparatus includes: first and second fluid flow components (1122, 1126) that define an axial flow path when joined together, in which the axial flow path is between a source of target material fluid and a nozzle supply apparatus; and a coupling apparatus configured to seal the joint between the first and second fluid flow components. The coupling apparatus includes a gasket (1105) having an annular shape defining an inner opening that is a part of the axial flow path when seated and sealed. When the gasket is seated between the first and second fluid flow components to thereby seal the joint formed by attaching the first and second fluid flow components, pressure applied to the gasket from target material fluid traversing the gasket inner opening along the axial flow path improves the hermetic function of the seal at the joint. Optionally, a functional insert like e.g. a flow restrictor (1160) can be seated in the gasket.

A high pressure swivel system provides fluid communication on a turret-moored vessel between a swivel core member being in fixed rotational alignment with a seabed mooring system and a swivel revolving member being in fixed rotational alignment with the hull of the vessel. The revolving member has upper and lower radially extending surfaces. On each of the radially extending surfaces are a series of radially spaced apart pressure seals. Hydraulic barrier fluid pressure is regulated in each of the volumes formed between the pressure seals. The pressures in the volumes are regulated such that a process fluid pressure higher than could be tolerated by any one individual pressure seal is safely accommodated by sharing the high process fluid pressure between or among two or more of the radially spaced apart pressure seals.

A high pressure swivel system provides fluid communication on a turret-moored vessel between a swivel core member being in fixed rotational alignment with a seabed mooring system and a swivel revolving member being in fixed rotational alignment with the hull of the vessel. The revolving member has upper and lower radially extending surfaces. On each of the radially extending surfaces are a series of radially spaced apart pressure seals. Hydraulic barrier fluid pressure is regulated in each of the volumes formed between the pressure seals. The pressures in the volumes are regulated such that a process fluid pressure higher than could be tolerated by any one individual pressure seal is safely accommodated by sharing the high process fluid pressure between or among two or more of the radially spaced apart pressure seals.

A pipe has a tubular body with a male end and a female end. The male end has an external surface with a first engagement groove. The female end has an internal surface with a second engagement groove, and an aperture extending from an outer surface of the tubular body to the second engagement groove. The female end receives the male end of another pipe such that the first engagement groove of the male end axially aligns with the second engagement groove of the female end to establish a spline engagement groove having a groove length, L.sub.G. A flexible spline is located in the spline engagement groove to lock the pipes together and establish a pipe assembly. The flexible spline has a spline length, L.sub.S, and L.sub.SL.sub.G.

A pipe has a tubular body with a male end and a female end. The male end has an external surface with a first engagement groove. The female end has an internal surface with a second engagement groove, and an aperture extending from an outer surface of the tubular body to the second engagement groove. The female end receives the male end of another pipe such that the first engagement groove of the male end axially aligns with the second engagement groove of the female end to establish a spline engagement groove having a groove length, L.sub.G. A flexible spline is located in the spline engagement groove to lock the pipes together and establish a pipe assembly. The flexible spline has a spline length, L.sub.S, and L.sub.SL.sub.G.

A gasket 4 includes: a cylindrical body portion 10 having a communication hole 10a for providing communication between flow passage holes 2c, 2c formed in two fluid devices 2, 2, respectively; and an annular primary sealing portion 11 projecting from a radially inner side of an axially outer end portion of the body portion 10 toward an axially outer side and to be press-fitted into an annular primary sealing groove 2d formed in each fluid device 2. In a state before the primary sealing portion 11 is press-fitted into the primary sealing groove 2d, an entirety of an inner circumferential surface 10b of the body portion 10 is formed such that a diameter thereof gradually decreases from both axially outer ends thereof toward an axially inner side.