Abstract: A metering valve or an injector includes: a valve-seat member which closes a valve chamber and has a central valve opening, and a spray orifice disk downstream from the valve-seat member in the flow direction of the fluid, which has at least one spray orifice. The spray orifice disk has a swirl chamber concentric with the spray orifice and at least one swirl duct leading from the swirl chamber to beneath the valve opening, and the swirl chamber and swirl duct are integrally formed as recesses into the disk surface of the spray orifice disk facing the valve body. The swirl duct has a duct cross section and the spray orifice has an orifice cross section such that the ratio of the duct cross section to the orifice cross section is equal to or greater than 1.5.

Abstract: A variable arc sprinkler nozzle is provided for distribution of water through nearly any adjustable arcuate span. The nozzle includes one or more arcuate slots formed by the helical engagement of spiral surfaces of a deflector and a nozzle body. A user may rotate a portion of the nozzle body to select the arcuate span of the one or more slots. A matched precipitation rate feature is adjustable to proportion the amount of water directed to the deflector depending on the extent of the arcuate span. Further, edge fins on the deflector and nozzle body channel water flow at the two edges of the distribution arc to increase the throw radius and to provide fairly uniform water distribution at the edges of the arc.

Abstract: A push-button for a pressurised liquid distribution system, the push-button including a body onto which an end piece is mounted around an insert so as to form a distribution chamber between said end piece and the insert, the distribution chamber being in communication with a supply channel intended to be mounted on a feed tube for the pressurised liquid, the distribution chamber being successively connected to upstream channels, downstream channels and distribution channels, the distribution channels each converging towards an outlet opening while being designed to enable the impaction of the liquid jets dispensed by the openings, the upstream and downstream channels extending longitudinally while forming an upstream and downstream fluid flow section, respectively, in the distribution chamber, the downstream section having an average transverse surface which is less than the average transverse surface of the upstream section.

Abstract: A fuel injection valve has a valve body, a valve seat member having a valve seat and an opening portion formed at a downstream side of the valve seat member, a swirl chamber providing swirl to fuel, an orifice nozzle formed at a bottom of the swirl chamber and jetting the fuel, a communication conduit connecting the swirl chamber and the opening portion of the valve seat member, and a fuel inflow prevention wall provided at a connecting area between the communication conduit and the swirl chamber. The fuel inflow prevention wall is formed so as to prevent an incoming fuel from the communication conduit from directly flowing into the orifice nozzle and to suppresse a collision between a flow of the fuel that swirls and comes to the connecting area and a fuel flow coming from the communication conduit.

Abstract: An air cap for keeping a spray nozzle with a flat spray clean is presented. The air cap contain the nozzle and has a slit for the spray from the nozzle, through which opening an air flow is flowing in the same direction as the flat spray from the nozzle. The air cap is divided into a back component comprising an internal thread, and a front component comprising the slit. The components are rotatable relative to one another.

Abstract: A shower head includes a mouth piece including a middle axial through channel for flow through of water, a rotationally symmetrical deflection element for the water being near the external outlet of the channel, which mouth piece is connected to a holder through which the water is fed, while the deflection element is held by a stem which with radial clearance projects axially in the channel, and is surrounded by a conical surface, the mouth piece limiting a cavity around and axially outside the deflection element, the conical surface projecting convergently outwardly. The stem may be conical at least in the portion being furthest away from the deflection element, whereby the surface of the stem converges towards the deflection element, and whereby the flow area for the water between the stem and the mouth piece is altered by axial movement of the mouth piece relatively to the holder.

Abstract: A sprinkler nozzle having a nozzle housing with an inlet for liquid and having a longitudinally extending axis. The nozzle housing, opposite the inlet, is delimited by a surface of revolution with nozzle outlet openings arranged around the axis. In the flow direction opposite the nozzle outlet openings, respective impact faces are arranged for reflecting the liquid that flows out through the nozzle outlet openings. The impact faces are constituted by the ends of respective threads that are secured to the nozzle housing, whereby the impact faces are able to reflect water that flows out of the respective nozzle outlet openings.

Abstract: The invention relates to a nozzle (10) for mixing a gaseous fluid such as air and a liquid such as water and for ejecting an atomized mist of liquid droplets. The nozzle includes a nozzle body defining first (60), second (44) and third (52) annular passages along the length thereof. Pressurized fluid is introduced into the first annular passage (60) and a first restricted annular orifice (68) leads from the first annular passage (60) to the third annular passage (52). Liquid is introduced into the second annular passage (44) and a second restricted annular orifice (48) leads from the second annular passage (44) to the third annular passage (52). Liquid and gaseous fluid are aggressively mixed in the third annular passage (52).

Abstract: A nozzle for use in treating waste water is provided with a hollow body member having fluid inlets and outlets. A glide tube having a tapered interior is positioned within the body member. A boulet is positioned within the glide tube to form a pressure drop zone and an expansion zone between the glide tube and the boulet. The fluid inlet receives highly or super-saturated liquid from which micro bubbles of gas are produced within the pressure drop and expansion zones. The fluid outlet discharges the liquid and micro bubbles to a desired point of use.

Abstract: A misting nozzle includes a nozzle body defining a conduit with a fluid inlet and a fluid outlet end. The nozzle also includes an aperture member having an opening therethrough with an aperture at one end. The opening is designed to receive the fluid outlet end therein. External threads on the nozzle body and mating internal threads in the opening releasably attach the aperture member to the nozzle body. A circumferentially extending surface is formed on the nozzle body adjacent the outlet end so as to abut a mating surface in the opening of the aperture member to prevent fluid flow between the fluid outlet and the aperture. Offset slots extend between the mating surfaces to provide fluid flow and are positioned to impart turbulence to the fluid prior to flowing through the aperture.

Abstract: A fuel injector, especially for the direct injection of fuel into the combustion chamber of a mixture-compressing internal combustion engine having externally supplied ignition, comprising a swirl disk having swirl channels and a central recess, and having a guide compensator inserted into the recess whose center axis is able to be inclined relative to the center axis of the fuel injector and which has a sealing fit with respect to the valve needle. Formed by a sealing-seat surface, disposed in the swirl disk, and a radial widening of the guide compensator is a sealing seat which tolerates an excursion of the center axis, preventing a swirl-free leakage flow in the same manner as the sealing fit between the valve needle and the guide compensator.

Abstract: A nozzle for discharging finely atomized fluids comprises a vortex-mixing-module with a mixing chamber along with at least one liquid inlet tangentially communicating with the chamber and at least one gas inlet axially communicating with the liquid inlet prior to their injection into the mixing chamber, wherein the mixed fluid of liquid/gas from the liquid inlet is setting vortex flow, re-mixing with each other and forming bubble-laden fluid. An impingement member positioned at the downstream of a substantially concentric-mounted pintle stem of the module provides the function of metering flow and forming the spray angle while maintaining the flow distribution to be axial-symmetric in both mass and velocity plus forming a flow field with non-disturbed angular momentum.

Abstract: A nozzle assembly for a handheld and hand operated liquid trigger sprayer includes a nozzle housing and a flow control member contained in the nozzle housing. The nozzle housing has an oblong liquid discharge orifice and a plurality of liquid breakup channels that radiate outwardly from the orifice. The flow control member has a head with a conical surface that engages over the liquid breakup channels and together they break up a flow of viscous liquid into separate liquid streams that impact with each other at the entrance to the discharge orifice and the liquid is discharged from the nozzle orifice in a narrow, fan spray pattern of the viscous liquid.

Abstract: A nozzle comprises a nozzle body, a principal orifice, annular orifice means in the front of the nozzle body for atomizing the stream ejected from the principal orifice, a pair of flattening orifice means in the front of the nozzle body for flattening the atomized stream, secondary orifice means in the front of the nozzle body for widening the flattened stream, and conduit means communicating between the back of the nozzle body and, respectively, said principal orifice means, said annular orifice, said flattening orifice means, and said secondary orifice means.

Abstract: In a combustion process, especially one used for melting glass, the delivery of fuel is ensured by an apparatus having at least one burner (5) which is equipped with at least one injector (1) that includes a liquid fuel delivery tube (2) which has at least one internal wall (25) and an injected fluid delivery tube (3) arranged concentrically with respect to the liquid fuel delivery tube. Immediately before injecting the liquid fuel from its delivery tube, one puts it in the shape of a hollow jet basically assuming the shape of the internal wall. This has application for the reduction of NOx in a glass-making oven.

Abstract: An atomizing nozzle (40) includes a body (44) having an fluid inlet end (50), a fluid outlet end (52), and a channel (54) located between the inlet end (50) and the outlet end (52). A free floating plunger (46) resides in the channel (54). The plunger (46) has a frusto-conical portion (64) facing the inlet end (50) and a cylindrical portion (62) facing the outlet end (52). The frusto-conical portion (64) causes the plunger (46) to resist getting wedged in the channel (54) so that a mist (102) having fluid particles of uniform size is ejected from the outlet end (50).

Abstract: A multiple pattern spray nozzle is provided for connection to a supply of water under pressure, wherein the spray nozzle is adjustable upon movement of a single selector ring to one of several different spray pattern settings. The spray nozzle comprises a nozzle housing for mounting, for example, onto a hose end trigger valve or the like and supporting a stem unit for receiving the supply of water under pressure. A pair of flow control sleeves are carried by a perforate faceplate for sliding movement relative to the stem unit and nozzle housing to define different water flow paths leading respectively from the stem unit to different nozzle outlets formed by the faceplate in cooperation with the stem unit and nozzle housing.