Abstract: A liquid spraying system having a spray head and a recirculating liquid supply system for directing pressurized supply liquid to the spray head with a portion of the liquid being directed from the spray head as a discharging spray and a portion of the supply liquid exiting the spray head as a return liquid. The liquid supply system includes two separate selectively pressurizable liquid containable tanks each having a respective fluid conduit coupled to the spray head. The liquid supply system has (1) a first cycle of operation in which the first tank is pressurized and the second tank is depressurized so that pressurized liquid is supplied from the first tank to the spray head and return liquid is directed to the second tank, and (2) a second cycle of operation in which the second tank is pressurized and the first tank depressurized so that liquid is supplied to the spray head from the second tank and return liquid is directed to the first tank.

Abstract: A spray bar having a plurality of laterally spaced nozzles mounted in a row on a header block for discharging a row of liquid spray patterns, and a method of manufacture. The spray bar header includes a plurality of separate plates, each formed with a plurality of nozzle-receiving apertures and with one or more faces of adjacent interfacing plates being formed with grooves which define fluid passages for the supply liquid, atomizing and nozzle-actuating air, and heating fluid. The plates preferably are electroplated/electropolished for thorough and efficient cleaning upon disassembly.

Abstract: A spray nozzle for producing an asymmetrically distributed fluid discharge pattern such as for use in a container coating application is provided. The spray nozzles includes a body portion having an internal fluid passageway which terminates in a substantially hemispherical dome shaped end wall. A discharge orifice is provided in the end wall which is produced by superimposing on each other an approximately round opening and an elongated opening having opposed rounded ends. The elongated opening having a length greater than a diameter of the round opening and the round opening and the elongated opening defining respective edges of the discharge orifice which extend at different angles relative to a longitudinal axis of the fluid passageway. The resulting orifice produces a fluid discharge pattern wherein the amount of fluid discharged tapers in a continuous, non-linear manner from the location of maximum discharge to points of minimum flow at either end of the discharge pattern.

Abstract: A low pressure blower operated airknife having a housing with an elongated primary air discharge orifice for directing a narrow width curtain of air. The airknife includes an air-augmenting shroud which defines auxiliary discharge orifices on opposite longitudinal sides of the primary air discharge orifice such that air discharging from the primary discharge orifice creates a low pressure condition adjacent the auxiliary air discharge orifices for drawing additional air through the auxiliary discharge orifices which augments the velocity and volume of the discharging air current without the necessity for increasing the air inlet pressure or blower size. The shroud may take alternative forms, including pairs of wings disposed on opposite sides of the primary discharge orifice or hollow structures that surround the airknife housing. The airknife further is adapted for low pressure direction and application of air laden particles, such as preatomized liquid particles.

Abstract: An air assisted spray nozzle assembly, having particular utility in spraying liquid coolants in continuous metal casting systems, which is adapted for operation with substantially reduced air consumption. The nozzle body includes a pre-atomizing unit that has a relatively small sized pressurized air inlet, a liquid impingement post with a uniquely configured impingement face for enhancing liquid breakdown and intermixing with a pressurized air stream from the air inlet, and an expansion chamber configured to reduce eddy currents that detract from efficient pre-atomization of the liquid. The spray nozzle further includes an elongated spray tip supporting barrel adapted for releasable mounting in the pre-atomizing head in predetermined rotational orientation relative to its longitudinal axis for properly receiving and supporting a removable spray tip.

Abstract: A spray nozzle particularly useful for directing a liquid coolant onto continuously cast metal shapes. The spray nozzle includes a nozzle body having a liquid flow passageway communicating with a discharge orifice and a vane disposed within the passageway upstream of the discharge orifice. The vane has a central orifice for creating an axial flow stream and a plurality of circumferentially spaced angled passages for tangentially directing a plurality of liquid flow streams which create liquid turbulence, breakdown and intermixing with the axial flow stream such that liquid emitted from the discharge orifice is adapted for more uniform cooling of a cast metal notwithstanding changes in liquid pressure commensurate with changes in the rate at which the metal is cast.

Abstract: A spray nozzle particularly useful for directing a liquid coolant onto continuously cast metal shapes. The spray nozzle includes a nozzle body having a liquid flow passageway communicating with a discharge orifice and a vane disposed within the passageway upstream of the discharge orifice. The vane has a central orifice for creating an axial flow stream and a plurality of circumferentially spaced angled passages for tangentially directing a plurality of liquid flow streams which create liquid turbulence, breakdown and intermixing with the axial flow stream such that liquid emitted from the discharge orifice is adapted for more uniform cooling of a cast metal notwithstanding changes in liquid pressure commensurate with changes in the rate at which the metal is cast.

Abstract: A spray gun having a relatively simple outer heat jacket designed to accommodate a multiplicity of fluid supply lines connected to the spray gun while effectively heating and maintaining the supply fluids directed through the gun to the desired temperature for optimum spraying. The heat jacket is mountable and removable from the spray gun without disconnecting the fluid supply lines to the spray gun or the heating fluid supply line to the heat jacket. The illustrated heat jacket is formed with a plurality of external, longitudinally extending open-ended slot each for receiving a respective fluid supply line connected to the spray gun and an internal heating fluid passageway composed of a plurality of interconnected, longitudinally extending heat transfer chambers through which heating fluid is directed in swirling fashion.

Abstract: A liquid spraying system having a spray head and a recirculating liquid supply system for directing pressurized supply liquid to the spray head with a portion of the liquid being directed from the spray head as a discharging spray and a portion of the supply liquid exiting the spray head as a return liquid. The liquid supply system includes two separate selectively pressurizable liquid containable tanks each having a respective fluid conduit coupled to the spray head. The liquid supply system has (1) a first cycle of operation in which the first tank is pressurized and the second tank is depressurized so that pressurized liquid is supplied from the first tank to the spray head and return liquid is directed to the second tank, and (2) a second cycle of operation in which the second tank is pressurized and the first tank depressurized so that liquid is supplied to the spray head from the second tank and return liquid is directed to the first tank.

Abstract: An automatic spray gun incorporates threadless, sanitary couplings for all air and fluid flow path connections for less contamination and lower maintenance. The spray gun nozzle body has threadless connection inlet couplings for air and fluid supply lines. There are threadless connections between the fluid tip and the nozzle body and between the air cap and the fluid tip. The nozzle body/fluid tip connection may incorporate multiple passageways for air and fluid flow; for example a center passageway for fluid flow plus annular middle and outer passageways for atomizing air and fan air respectively, for which seals such as O-rings or a full face gasket may be incorporated at this interface. The nozzle body may also have a threadless connection coupling for the actuator.

Abstract: A gun-like spray device having a spray nozzle assembly at the discharge end and a reciprocatably movable valve needle for controlling the liquid flow through the discharge nozzle assembly. The nozzle assembly includes an orifice member which defines a liquid discharge orifice and a rigid valve seat for centering and precisely locating the valve needle in a closed position. An annular resilient sealing member is secured within the orifice member for engaging and creating a liquid seal about the valve needle separate and apart from the rigid seat when the valve needle is in a closed position. The spray nozzle assembly may be used with spray devices having different sized valve needles and includes a first rigid valve seat downstream of the resilient sealing member for receiving a relatively small diameter valve needle and a second rigid valve seat upstream of the resilient sealing member for receiving a relatively large diameter valve needle.

Abstract: A turret-type spray nozzle assembly having a rotatable turret which carries a plurality of spray nozzles and which is rotatable on the nozzle body for locating a selected one of the turret nozzles in an operative spray position. The spray nozzle assembly further includes an auxiliary spray nozzle adapted for directing a higher volume liquid spray than any one of the turret spray nozzles. The spray nozzle assembly includes a body which defines a more direct liquid flow passage, with fewer turns and lesser pressure losses, to the auxiliary nozzle than to a turret spray nozzle. An adaptor also is disclosed for convenient field conversion of a conventional turret spray nozzle into a nozzle assembly according to the invention.

Abstract: A spraying system having a plurality of spray nozzle assemblies mounted on a common liquid supply header. The spray nozzle assemblies each include a nozzle body fixed to the header and a spray tip secured to the body as an incident to rotation of the spray tip relative to the body. Each spray tip has an elongated discharge orifice adapted for emitting a flat spray pattern and is formed with radial gripping wings in aligned relation to the elongated discharge orifice which enable the user to know the orientation of the discharge orifice, and hence the orientation of the flat discharging spray pattern, prior to start up of a spray operation.

Abstract: A spray nozzle of a fire protection system is provided for discharging a hollow cone spray pattern. The nozzle generally includes a hollow, elongated body and an integral core subassembly which may be preassembled. The integral subassembly configuration simplifies the subsequent assembly, disassembly or service of the overall nozzle in the field. In an exemplary embodiment, the subassembly includes a unitary core holder having a plate portion and an annular wall portion, with a discharge orifice disposed centrally in the plate portion. Additionally, the subassembly includes a disc-shaped core having a plurality of sloped passages. The core and core holder are cooperatively shaped to define generally cylindrical a whirl chamber in a space between a downstream surface of the core and the plate portion of the core holder.

Abstract: A spray nozzle for producing an asymmetrically distributed fluid discharge pattern such as for use in a container coating application is provided. The spray nozzles includes a body portion having an internal fluid passageway which terminates in a substantially hemispherical dome shaped end wall. A discharge orifice is provided in the end wall which is produced by superimposing on each other an approximately round opening and an elongated opening having opposed rounded ends. The round opening and the elongated opening defining respective edges of the discharge orifice which extend at different angles relative to a longitudinal axis of the fluid passageway. The resulting orifice produces a fluid discharge pattern wherein the amount of fluid discharged tapers in a continuous, non-linear manner from the location of maximum discharge to points of minimum flow at either end of the discharge pattern.

Abstract: An air assisted spray nozzle assembly adapted for more efficiently producing a full cone spray distribution with finely atomized particles distributed throughout the conical spray pattern. The spray nozzle assembly includes a nozzle body having a liquid passage communicating with the pressurized liquid supply and at least one air passage communicating with a pressurized air supply.

Abstract: An air assisted spray nozzle assembly having an air cap effective for generating wide, flat spray patterns with improved liquid particle breakdown, utilizing relatively low air flow rates and pressures. The air cap includes a pair of longitudinally extending air passageways on opposite sides of a central liquid flow stream discharge orifice. The air flow passages each have a discharge orifice defined by a respective transverse deflector flange and a closely spaced inwardly tapered deflector surface which cooperate to deflect and guide pressurized air streams inwardly toward the discharging liquid flow stream for atomizing the liquid and for directing it into a well defined spray pattern.

Abstract: A quick disconnect spray nozzle assembly having a nozzle body for connection to a fluid supply source and a removable and replaceable spray tip. The spray tip carries an externally mounted, elongated, tubular seal and biasing member which has an asymmetrical design, including an enlarged cylindrical downstream end and a rounded upstream end, configured for effecting radial and axial sealing forces upon engagement with seal a seating cavity in the nozzle body. The spray tip further includes radial camming and locking lugs having planar camming, detent, and locking surfaces which cooperate with the nozzle body for drawing the spray tip into mounted engagement, with the elongated sealing member interposed therebetween, as an incident to quick turn rotation of the spray tip and without the necessity for manually forcing the spray tip against the seal and biasing member.