Abstract: A swirl element for swirling fluid in a nozzle has a swirler body. The swirler body defines a feed channel including an axially oriented channel surface and a swirl chamber in fluid communication with the feed channel. The swirl chamber defines a radially oriented swirler surface substantially normal to the channel surface. The swirl chamber and the axially oriented channel are in fluid communication through a tangential slot for imparting swirl on fluids passing from the feed channel into the swirl chamber. The tangential slot includes a smoothly rounded surface transitioning from the channel surface to the swirler surface for providing a smooth, substantially separation free transition in fluid flow from the channel into the swirl chamber.

Abstract: A swirler for swirling fluid in a nozzle has a swirler body. The swirler body defines an inlet end, an outlet end opposed to the inlet end, and a circumferential periphery. The circumferential periphery extends axially from the inlet end to the outlet end. The outlet end defines a first swirl chamber. The inlet end defines a second swirl chamber.

Abstract: A nozzle assembly includes a nozzle body defining an inlet and an opposed spray outlet for producing a spray of fluid supplied at the inlet. The nozzle body includes a radially outward extending retainer feature. An adapter having an adapter bore therethrough is provided for supplying fluid to the inlet of the nozzle body. The nozzle body is engaged within the bore of the adapter. A retainer radially outward of the adapter and nozzle body includes a retainer feature engaged to the retainer feature of the nozzle body to hold the nozzle body and adapter body together. A sleeve is engaged to the retainer radially outward thereof to prevent disengagement of the retainer features of the nozzle body and retainer. The sleeve and retainer are configured for relative movement for releasing the retainer features of the nozzle body and retainer for removal of the nozzle body from the adapter.

Abstract: A nozzle assembly includes a nozzle body defining an inlet and an opposed spray outlet for producing a spray of fluid supplied at the inlet. The nozzle body includes a radially outward extending retainer feature. An adapter having an adapter bore therethrough is provided for supplying fluid to the inlet of the nozzle body. The nozzle body is engaged within the bore of the adapter. A retainer radially outward of the adapter and nozzle body includes a retainer feature engaged to the retainer feature of the nozzle body to hold the nozzle body and adapter body together. A sleeve is engaged to the retainer radially outward thereof to prevent disengagement of the retainer features of the nozzle body and retainer. The sleeve and retainer are configured for relative movement for releasing the retainer features of the nozzle body and retainer for removal of the nozzle body from the adapter.

Abstract: A swirl element for swirling fluid in a nozzle has a swirler body. The swirler body defines a feed channel including an axially oriented channel surface and a swirl chamber in fluid communication with the feed channel. The swirl chamber defines a radially oriented swirler surface substantially normal to the channel surface. The swirl chamber and the axially oriented channel are in fluid communication through a tangential slot for imparting swirl on fluids passing from the feed channel into the swirl chamber. The tangential slot includes a smoothly rounded surface transitioning from the channel surface to the swirler surface for providing a smooth, substantially separation free transition in fluid flow from the channel into the swirl chamber.

Abstract: A swirler for swirling fluid in a nozzle has a swirler body. The swirler body defines an inlet end, an outlet end opposed to the inlet end, and a circumferential periphery. The circumferential periphery extends axially from the inlet end to the outlet end. The outlet end defines a first swirl chamber. The inlet end defines a second swirl chamber.

Abstract: A spray nozzle which employs a locking and an alignment feature to facilitate the replacement of internal nozzle components. The spray nozzle includes a nozzle body, a swirl element and an orifice disc. The nozzle body defines a central bore which extends between a fluid receiving section and a fluid discharge section and delineates a central axis and delimits an interior locating surface for swirl element and the orifice disc. The orifice disc includes a protuberance associated with the downstream surface thereof which protrudes into the spray opening of the nozzle body.

Abstract: A spray nozzle swirl element (24) is described which includes a swirl chamber 38 and an integral retaining portion (26). Retainer means (28) are provided on the retaining portion (26) to allow the swirl element (24) to be retained, in use, in a nozzle body (10) of the associated spray nozzle.

Abstract: A spray nozzle (300) which employs a locking and an alignment feature (330) to facilitate the replacement of internal nozzle components. The spray nozzle includes a nozzle body (310), a swirl element (314) and an orifice disc (312). The nozzle body defines a central bore which extends between a fluid receiving section and a fluid discharge section and delineates a central axis and delimits an interior locating surface for swirl element and the orifice disc. The orifice disc includes a protuberance (374) associated with the downstream surface thereof which protrudes into the spray opening of the nozzle body.

Abstract: A spray nozzle comprises a cap 38 having an outlet orifice 41 formed therein for producing an atomised spray, the cap 38 having an outer surface 62, and further fluid outlet means 70 whereby a curtain of fluid can be directed over at least part of the outer surface 62.

Abstract: A spray nozzle (300) which employs a locking and an alignment feature (330) to facilitate the replacement of internal nozzle components. The spray nozzle includes a nozzle body (310), a swirl element (314) and an orifice disc (312). The nozzle body defines a central bore which extends between a fluid receiving section and a fluid discharge section and delineates a central axis and delimits an interior locating surface for swirl element and the orifice disc. The orifice disc includes a protuberance (374) associated with the downstream surface thereof which protrudes into the spray opening of the nozzle body.

Abstract: Disclosed is a new and improved check valve for use in applications such as spray drying, for example. The check valve assembly includes a valve member or piston mounted for movement within an axial bore defined within the valve body. The piston controls the flow of fluid through the valve body and opens by moving in an upstream direction opposite the direction of fluid flow so as to minimize the pressure drop across the valve assembly.