A system and method of fluid delivery for providing a surface fluid pattern, the system comprising: a fluid delivery head for fluid flow therethrough, the fluid delivery head comprising: a fluid delivery surface having surface openings defined therein and arranged across the fluid delivery surface as a two-dimensional display; wherein at least some of the surface openings are grouped as a surface opening unit having at least one aspiration opening through which fluid can be provided to the fluid delivery surface and at least one injection opening through which fluid can be moved away from the fluid delivery surface, the surface opening unit comprising at least three surface openings positioned as a two-dimensional display and outwardly of at least one other surface opening.

The invention relates to a modular system for weed control for a rail vehicle. The modular system has a control unit for producing control signals for controlling valves and miners in a separate herbicide and mixing module and for producing a second set of control signals for controlling valves of a nozzle rod. The herbicide and mixing module has a container for holding different herbicides and electrical connection elements for connections to the control unit. Furthermore, a nozzle rod is present, which is tit ted with a nozzle set, in order to spray herbicides of the herbicide and mixing module. In addition, a camera module is present, which produces a weed signal in response to the detection of a weed, in order to control the spraying of the herbicides. The camera module is at such a distance from the nozzle rod that, despite high speed, there is sufficient time to provide the herbicide at the nozzles.

One variation of a system includes: a mount defining an inlet configured to couple to a water supply; a body defining a fluid circuit and coupled to the mount; and a pressure regulator interposed between the inlet and the fluid circuit and configured to regulate water supplied at the inlet over a range of inlet pressures to a range of internal pressures less than and narrower than the range of inlet pressures. A set of nozzles arranged on the body and coupled to the fluid circuit are configured to, in response to the pressure regulator regulating a first inlet pressure down to a first internal pressure, discharge water droplets: exiting the body with kinetic energies in a range of kinetic energies; exiting the body in a first spray pattern defining a first width at a target distance below the body, and exhibiting a first volumetric ratio of water to air.

A spray nozzle device according to an embodiment includes a first nozzle having a first spray hole for spraying plasma, a second nozzle spaced apart from the first nozzle and having at least one second spray hole through which the plasma sprayed from the first nozzle passes, a coupling member spaced apart from the second nozzle and coupled to the first nozzle, and at least one connecting member connecting the second nozzle with the coupling member. The second nozzle includes at least one inflow channel for the injection of a deposition material into the second spray hole.

One variation of a system includes: a mount defining an inlet configured to couple to a water supply; a body defining a fluid circuit and coupled to the mount; and a pressure regulator interposed between the inlet and the fluid circuit and configured to regulate water supplied at the inlet over a range of inlet pressures to a range of internal pressures less than and narrower than the range of inlet pressures. A set of nozzles arranged on the body and coupled to the fluid circuit are configured to, in response to the pressure regulator regulating a first inlet pressure down to a first internal pressure, discharge water droplets: exiting the body with kinetic energies in a range of kinetic energies; exiting the body in a first spray pattern defining a first width at a target distance below the body, and exhibiting a first volumetric ratio of water to air.

A system and method of fluid delivery for providing a surface fluid pattern. The system includes a fluid delivery head for fluid flow therethrough. The fluid delivery head includes a fluid delivery surface having surface openings defined therein and arranged across the fluid delivery surface as a two-dimensional display. Some of the surface openings are grouped as a surface opening unit. The surface opening unit includes at least one aspiration opening through which fluid can be provided to the fluid delivery surface and at least one injection opening through which fluid can be moved away from the fluid delivery surface. The surface opening unit includes at least three surface openings positioned as a two-dimensional display and outwardly of at least one other surface opening.

A single-button water passage switching structure includes a water inlet assembly and a water outlet assembly. The water inlet assembly includes a water inlet body, an operating button, a first control assembly, and a second control assembly. The water inlet body has a first mounting chamber and a second mounting chamber. The first mounting chamber and the second mounting chamber each have a water inlet and two water outlets. The first control assembly is configured to realize a pause mode, a first spray mode or the switching of water passages of the second mounting chamber. The second control assembly is configured to realize the switching of water passages of a second spray mode or a third spray mode. The operating button is configured to link the first control assembly and the second control assembly.

According to some illustrative embodiments, an angularly adjustable spray nozzle is employed that includes: a base section having a water flow path extending lengthwise there-through; a head section aligned at an end of the base section and rotatably mounted to the base section; wherein a flow path through the base section is inclined at an angle to a flow path through the head section such that when the head section is rotated a predetermined extent relative to the base section, the spray device is moved between a substantially straight configuration of the head section with respect to the base section and an angular configuration of the head section with respect to the base section; wherein the head section includes a rotatable turret assembly having a plurality of selectable spray type discharge ports and a sleeve to which the rotatable turret assembly is mounted, the rotatable turret assembly including labels on a periphery thereof corresponding to respective ones of the selectable spray type discharge ports, and the sleeve having a plurality of windows through which the labels are viewed when aligned; and wherein the spray device is configured such that when the spray device is oriented in a generally horizontal use position a respective one of the labels corresponding to a selected spray type is displayed within a respective one of the windows that is located at a top side of the sleeve whether the spray device is in the substantially straight configuration or in the angular configuration.

Disclosed is a fire suppressant system for an aircraft having: a source of a fire suppressant; a tubing system for delivering the fire suppressant to one or more predetermined locations; and a discharge nozzle disposed in the one or more predetermined locations, the discharge nozzle connected to the tubing system for distributing the fire suppressant in the one or more predetermined locations during a fire, the discharge nozzle including a plurality of nozzle heads including a first nozzle head with a first flow area and a second nozzle head with a second flow area that differs from the first flow area.

According to some illustrative embodiments, an angularly adjustable spray nozzle is employed that includes: a base section having a water flow path extending lengthwise there-through; a head section aligned at an end of the base section and rotatably mounted to the base section; wherein a flow path through the base section is inclined at an angle to a flow path through the head section such that when the head section is rotated a predetermined extent relative to the base section, the spray device is moved between a substantially straight configuration of the head section with respect to the base section and an angular configuration of the head section with respect to the base section; wherein the head section includes a rotatable turret assembly having a plurality of selectable spray type discharge ports and a sleeve to which the rotatable turret assembly is mounted, the rotatable turret assembly including labels on a periphery thereof corresponding to respective ones of the selectable spray type discharge ports, and the sleeve having a plurality of windows through which the labels are viewed when aligned; and wherein the spray device is configured such that when the spray device is oriented in a generally horizontal use position a respective one of the labels corresponding to a selected spray type is displayed within a respective one of the windows that is located at a top side of the sleeve whether the spray device is in the substantially straight configuration or in the angular configuration.