A nozzle and a method of generating an inhalable aerosol from a liquid solution or liquid suspension and a gas by operating the nozzle. A column-like aerosol plume is generated having fluid particles within a particle free sheath of gas, the aerosol plume being generated from a compressed gas interacting within the aerosolizing space with a fluid ejected along the central axis, and generates a Venturi effect entraining gas that flows over the convex outer nozzle surface that together with the particle free sheath keeps the circumferential edge and the outer nozzle surface free of particle deposition. An aerosol exit orifice diameter is at least 1.3 times larger than the fluid exit orifice diameter; and a converging annular pressurized gas channel extending at an acute gas flow angle of 10-30 with respect to a central axis.

A spray device (100) for spraying a liquid (L), the device comprises a tank (10) containing the liquid (L) for spraying, at least one liquid ejector member (20) in communication with said tank (10), and a pyrotechnic gas generator (30) for pressurizing the liquid inside said tank and propelling it under pressure out from said tank. According to the invention, in at least one mode of operation, the ejector member (20) is in communication with the gas generator (30) in such a manner as to enable it to be fed with the gas generated by said generator (30).

A method for producing particles, which contains: bringing a compressive fluid and a pressure plastic material into contact with each other to melt the pressure plastic material; and jetting a melt obtained by melting the pressure plastic material to form particles, wherein the jetting the melt is performed by a two-fluid nozzle or three-fluid nozzle.

Applicant discloses a novel method of spray applying multiple courses of a rapid cure, two part polymer sealant to an aircraft surface. The method sometimes uses a two part polymer mix for use in the aircraft industry that is applied with pneumatic mix and spray gun. The two part cartridge is used in the mix and spray gun so the mix is applied immediately upon mixing, but the two components are kept separated unless the gun is applying the mix. The multiple courses cure to form a clear sealant that allows for inspection of cracks and corrosion beneath the sealant. It cures quickly so that the coated part may be further processed, for example in the assembly line during aircraft build. Applicant further discloses multiple spray gun systems for applying such a two-part polymer mix to aircraft parts.

A spray nozzle for production of urea fertilizer granules and/or urea-sulfur fertilizer granules has a conveying channel and an atomizing gas channel. The conveying channel has at least one separating pin and the atomizing channel has at least one swirl element. The swirl element has inserts, cutouts and moving and fixed elements. The disclosure also sets out a fluidized bed granulator with a spray nozzle for production of a urea-sulfur fertilizer, a process for producing a urea-sulfur fertilizer, and the use of the spray nozzle for production of fertilizer granules.

A nozzle and a method of generating an aerosol from a fluid and a gas by operating the nozzle. The nozzle has an aerosol exit orifice of a larger diameter and a fluid exit orifice of a smaller diameter aligned on a common central axis. A pressurized gas from a pressurized gas exit in close proximity to the fluid exit orifice intersects a fluid jet exiting from the fluid exit orifice at that acute angle and in a distance from the aerosol exit orifice. The method includes aerosolizing a fluid with a viscosity exceeding 4 cSt delivering an inhalable medication at a rate of more than 1 ml/minute, thereby delivering a medication at a mass flow rate of at least 30 mg/minute in form of the fluid particles having a mass median aerodynamic diameter (MMAD) of 6 m or less.

An air halo assembly for a spray gun assembly is provided. The spray gun assembly includes a fluid supply assembly, an air supply assembly, and an air halo nozzle assembly. The air halo nozzle assembly includes a liquid nozzle assembly and an air halo assembly. The fluid supply assembly is coupled to, and is in fluid communication with, the liquid nozzle assembly. The air halo nozzle assembly is structured to produce a liquid flow stream having a longitudinal axis. The air halo assembly includes a body. The air halo assembly body defines a passage. The air halo assembly body passage includes an inlet and an air halo outlet. The air halo assembly body passage inlet is structured to be in fluid communication with the air supply assembly.