Irrigation nozzles are provided that irrigate a full circle coverage area with different maximum throw radiuses. The nozzle may include two bodies, one nested within the other, that acting together form the full circle coverage area. The two bodies collectively define an annular exit orifice with one of the bodies defining the inner radius and the other body defining the outer radius. A flow restrictable inlet may be used to adjust flow through the nozzle and to adjust the maximum throw radius. The nozzle may also include a flow reduction valve to reduce the throw radius from a maximum distance and may be adjusted by actuation of an outer wall of the nozzle. A deflector for use with an irrigation nozzle is also provided.

A protective cover for a fire protection sprinkler includes a pair of sidewalls and an orthogonal wall structure connected to an upper edge of each of the pair of sidewalls. The orthogonal wall structure including a slot therein that opens along an edge of the orthogonal wall structure in alignment with an opening between the pair of sidewalls. The slot including a pair of side edges including a pair of opposing arcuate regions adapted to engage a deflector mounting boss of a fire protection sprinkler. An arcuate sidewall extends from the orthogonal wall structure and an upper wall extending inward from an upper edge of the arcuate sidewall and opposing the orthogonal wall structure to define a cavity that is adapted for receiving a deflector of a fire protection sprinkler.

An automatic fire protection sprinkler includes a sprinkler body having a passage with an inlet end and a discharge opening. A pair of sprinkler arms extend from the sprinkler body. The pair of sprinkler arms each include a radially inwardly extending leg including a threaded bore for receiving a compression screw. The pair of sprinkler arms each include a radially outwardly extending leg each defining an aperture therein. An outlet closure assembly includes a closure element that selectively blocks the discharge opening of the sprinkler body and a trigger assembly including a yoke that engages the compression screws and a glass bulb that extends between the yoke and the closure element. A deflector is coupled to the sprinkler arms by a pair of support pins that are received in the apertures in the radially outwardly extending legs of the at least two sprinkler arms.

Fire protection mist nozzles for industrial oil cookers, oil cookers with fire protection systems, and method of oil cooker fire protection are provided. The mist nozzles operate at pressures between 170 and 250 psi, and provide a unique distribution pattern that allows for variable installations for protection in certain operative environments including oil cookers with various hood configurations. The fire protection nozzles includes a base defining an inlet and an outlet along an axis. The base includes an orifice having an inlet diameter and an outlet diameter. The outlet diameter is preferably greater than the inlet diameter; and the orifice defines a K-factor of less than 1.0 gpm/psi½. The nozzle includes a diffuser aligned with the orifice. The diffuser has a preferably substantially domed portion with a maximum diameter that is less than the summation of the inlet diameter and the outlet diameter of the orifice.

An automatic nozzle for firefighting low-pressure water mist systems comprising a nozzle body and shutter means, said nozzle body comprising a plurality of axial-symmetric components defining an inlet opening and a plurality of inner cavities, which are fluid-dynamic connected each other by means of one or more openings, being said components configured to generate a radial spray through a circumferential opening, which extends all over the circumference of a second component, said circumferential opening being formed between a base of an annular board of the second component and an upper surface of a hollow body of a third component, and two or more full cone sprays by means of the fluid passage through cylindrical openings on a circular and axial-symmetric body of a fifth component, configured to define a turbulent motion of the fluid in at least two correspondent cylindrical cavities of a fourth component.

A medical spraying device and method, for irrigating a wound, having a liquid reservoir for a medical irrigation liquid or a connection for such a liquid reservoir and an arrangement for applying pressure to the medical irrigation liquid, such that the irrigation liquid is pushable through a nozzle by the pressure acting on the irrigation liquid in order to produce a spray cone. The nozzle has a plurality of openings, which are arranged at an angle to one another in such a way that the irrigation liquid jets exiting from the openings, at a such flow rate and angle, meet in an atomization space and/or a discharge opening of the nozzle; thus, a spray cone is produced from the atomized irrigation liquid.

An in-situ applicator for applying a composition in a pipe comprises a flow diverter configured to receive a composition and eject the composition from at least one outlet. The applicator also comprises a hollow conical body having a narrow end, a broad end, and an interior surface configured to receive the composition ejected from the flow diverter. The conical body also has a plurality of holes forming a band that wraps circumferentially around the conical body which defines a flow region on the interior surface between the band and the narrow end. The band includes first holes adjacent to the flow region where each of the first holes has a first average diameter and second holes disposed between the first holes and the broad end, each of the second holes having an average diameter greater than the first diameter.

A sprinkler assembly that includes a frame having a body including an inlet, an outlet and an internal passageway extending between the inlet and the outlet to define a longitudinal sprinkler axis. Two frame arms extend distally from the body, and each arm has a portion defining a cross-sectional area with a lateral surface and a medial surface spaced about a first plane bisecting the body with the sprinkler axis disposed in the first plane. An axially aligned thermally responsive glass-bulb type trigger is disposed along the sprinkler axis. The cross-sectional areas of the frame arms are asymmetrical with respect to one another about the first plane and each cross-sectional area is asymmetric about a second plane perpendicular to the first plane. The lateral surface of each arm includes an undulation to provide the sprinkler assembly with substantially consistent thermal sensitivity about the sprinkler axis.

A sprinkler assembly including a fluid deflecting structure including a plurality of spaced apart tines defining a plurality of slots. The tines include a first pair of symmetric tines and a second pair of symmetric tines disposed orthogonally to the first pair of symmetric tines. The plurality of slots includes a group of asymmetric slots each having a first portion with a constant width and a second portion with a variable width radially outward of the first portion of the asymmetric slot.

A fuel atomizer that includes a housing having a fuel inlet and at least one primary orifice positioned at the inlet, wherein the at least one orifice configured to disperse a stream of fuel into a plurality of fuel droplets. The plurality of fuel droplets contact a fuel impingement surface to break up the plurality of fuel droplets into a plurality of smaller secondary droplets and create a thin film of secondary droplets on the impingement surface. At least one pressurized air channel delivers an airflow into contact with the secondary droplets. The secondary droplets pass through a plurality of secondary outlet orifices to exit the housing. A size of the plurality of secondary droplets is reduced when passing out of the plurality of secondary orifices.