A nozzle arrangement for a spray gun, in particular a paint spray gun, has at least one paint nozzle and an air cap. The paint nozzle has at least one outlet opening for the material to be sprayed and the air cap has at least one central opening which is bounded by at least one wall. The at least one wall forms a gap with at least one part of the paint nozzle, and a forward part of the paint nozzle has at least an inner face, an outer face and an end face. The end face of the paint nozzle encloses, at least in certain regions, an angle of greater than 90° or an angle of less than 90° with an outer face or an inner face of the paint nozzle. In the nozzle arrangements, the back-pressure counter to the outflow of the material to be sprayed is lower than in prior art nozzles. A spray gun, in particular a paint spray gun, having such a nozzle arrangement is also disclosed.

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 paint spray gun includes a gun body formed as a unitary one piece structure composed of a tubular body portion, a valve connection portion, an air passageway portion and a feed connection portion. A spray cap is disposed on the tubular body portion and has a cap opening. The tubular body portion has an air chamber that is covered by the spray cap and that communicates with said cap opening, and a feed passage connected to the chamber. The valve connection portion, the air passageway portion and the feed connection portion are formed as one piece with the tubular body portion without welded joints.

A system, including a spray cap configured to couple to a spray tool, wherein the spray cap includes a body and an air shaping passage through the body. The air shaping passage includes a flow control passage, an expansion chamber downstream from the flow control passage, and one or more air shaping outlets downstream from the expansion chamber.

An atomizing spray device includes a housing having inlets that receive a first fluid and a slurry of ceramic particles and a second fluid. The inlets are fluidly coupled with outlets by an interior chamber that mixes the first fluid with the slurry to form a primary mixture of the first fluid and first atomized droplets of the slurry. A first outlet on a first side of the housing and a second outlet on the first side of the housing are shaped to change the primary mixture to form a secondary mixture of the first fluid and second atomized droplets of the slurry. The first outlet sprays the secondary mixture onto a first surface as a first layer of coating and the second outlet sprays the secondary mixture onto the first surface as a second layer of coating while the housing moves in a direction along the first surface.

Systems and methods that provide or restore a coating to a component are provided. The systems and methods utilized an atomizing spray device. A gas and a slurry that comprises fluid and ceramic particles are supplied to the atomizing spray device. The slurry and gas are discharged from the spray device to form two-phase droplets. The fluid within the droplets evaporates to prevent the fluid from becoming part of the coating as the droplets traverse through the air and prior to impacting the surface of the component.

A paint spray gun comprises a spray gun body; an air cap; and a hollow needle capable of assuming at least an open position enabling the passage of paint therethrough and a closed position; at least one air distribution channel for atomizing air; and at least one air distribution channel for fan air. A fluid spray single two stage nozzle includes first and second internal surfaces at first and second predetermined angles, respectively, with respect to a rotational axis of symmetry of the nozzle, wherein the first angled surface is proximate a forward opening of the nozzle, the second angled surface is aft of the first angled surface, the first angle is in a range of substantially 0.05 to thirty degrees, and the second angle ranges from substantially 0.1 to sixty degrees greater than that of the first angle.

A binary nozzle for atomizing a mixture of agent to be sprayed and spray air is connected to at least one supply duct via which the mixture or the agent to be sprayed can be supplied to the binary nozzle, wherein a valve is arranged between this supply duct and a nozzle outlet of the binary nozzle. A corresponding spray head and also a method for atomizing a mixture of agent to be sprayed and spray air uses a binary nozzle. The binary nozzle includes a nozzle body formed in a single piece and including the nozzle outlet, wherein a movable assembly of the valve is fastened to the nozzle body by a fastening element and/or held tight against the nozzle body by a spring device.

An atomizing spray device includes a housing having plural inlets and one or more outlets fluidly coupled with each other by an interior chamber. The inlets include a first inlet shaped to receive a first fluid and a second inlet shaped to receive a slurry of ceramic particles and a second fluid. The interior chamber in the housing is shaped to mix the first fluid received via the first inlet with the slurry received via the second inlet inside the housing to form a mixture in a location between the inlets and the one or more outlets. The interior chamber in the housing also is shaped to direct the mixture formed inside the housing as droplets outside of the housing via the one or more outlets such that, based on a discharged amount of the first fluid in the droplets, the first fluid promotes evaporation of the second fluid as the droplets traverse from the housing toward a surface of a component.

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.