Features

The AA nozzle uses the energy in compressed air to produce highly atomized sprays at low flow rates. There are many interchangable components that can be assembled to achieve a variety of spraying objectives.

Spray set-ups

AA nozzles produce three distinctly different types of sprays, depending on which interchangeable air and fluid caps are selected. The spray type and flow rate are determined by the ‘set up’ –a specific combination of one air cap and one fluid cap.

Internai Mix set-up

Liquid and air streams meet within the nozzle and are mixed together and expelled through the same orifice.This internal mixing means the streams are not independent; a change in air flow will affect the liquid flow. This makes precise metering of the liquid more difficult than with an External Mix Set-up. Internal Mix Set-ups are able to produce the finest atomization of any of the AA set-ups, but they are generally not suitable for use with liquids which have a viscosity that is above 200 centipoise.

External mix set-ups

The air and liquid streams exit of the nozzle independently and are combined and mixed outside of the nozzle. Because there are no connection between the air and the liquid lines within the nozzle, the air and liquid flow rates can be controlled independently, allowing precise metering of the liquid. The atomization can be controlled by adjusting the air flow rate-more air produces finer atomization. In most cases these set-ups do not atomize as finely as internal Mix Set-ups. External Mix Set-ups may be used with liquid having a viscosity above 200 centipoise and for abrasive suspensions.

Siphon mix Set-ups

Internal and external Mix set-ups require the liquid to be supplied to the nozzle under pressure from a municipal water supply, pump, or pressure pot. Siphon set-ups use the flow of compressed air within the nozzle to siphon liquid from a container. Siphon set-ups are frequently used for spraying additives from a container without the use of a pump. They provide the lowest flow rates available in the AA series. They are generally not suitable for use with the liquids having a viscosity above 200 centipoise. BY supplying the liquid under pressure, SI set-ups may be used with liquids having a viscosity above 200 centipoise. In this case, the liquid flow rate is regulated by the fluid cap, and can be determined by using EF chart for the specific fluid cap

Basic operation

The basic AA nozzle assembly consisted of a body, a spray set-up and a hardware assembly that can provide shut-off and clean-out capability.

Non-Automatic Operation

The AA00 square body is the basic component of a non-automatic AA nozzle, Air and Liquid feeds are located at opposite ends, perpendicular to the spray.

The AA03 body has air and liquid feeds on one side, perpendicular to the spray axis.

The AA05 body has air and liquid inlets located in-line with the spray. Hardware assembly can not be used with the AA05 body

Hardware Assemblies for Non-Automated Operation

A. Plug: The minimum option hardware assembly required for AA operation. Provides neither clean-out nor shut-off

B. Shut-off: Turning the knurled knob will stop the flow of liquid to the nozzle. Should not be used to meter the flow of liquid.

C. Clean-out: Pressing the spring-loaded plunger will force a small diameter rod through the liquid orifice, cleaning any obstruction. Useful for intermittent spraying of a liquid that may dry in the orifice when not in use.

D. Clean-out/Shut-off: Combines functions of hardware assemblies B and S in one unit.

Materials:

Brass plated nickel, SUS303, SUS316

Applications:

Humidification, Coating for drug or food process. Spray of adhesives…

AIR-ATOMIZING SET-UP

---

AA-PR

Pressure-fed / Internal Mix / Narrow angle, Round , 1/4” pipe size

Design Features
- Internal Mix
- Finest atomization
- Narrow spray angle(12°~22°)
- Full cone Pattern

Standard Materials :Nickel plated Brass, SUS303, SUS316

AA-PR Set-Up Flow rate and dimensions

---

AA-PF

Pressure-fed / Internal Mix / Flat Fan, 1/4” pipe size

Design Features
- Internal Mix
- Finest atomization
- Flat fan, Wide angle spray Pattern (80°~120°)

Standard Materials :Nickel plated Brass, SUS303, SUS316

AA-PF set-ups flow rates and dimensions

---

AA-SR

Siphon feed, external Mix, Round spray pattern, 1/4” pipe size

Design Features
- lowest flow available
- Full cone pattern
- Very fine atomization
- Short to moderate forward spray projection
- Narrow spray angle(12°~22° )

Standard Materials :Nickel plated Brass, SUS303 and SUS316

AA-SR set-ups flow rates and dimensions

---

AA-EF

Pressure-fed / External Mix / Flat Fan, 1/4” pipe size

Design Features
- External mix: allows spraying of viscous materials
- Variable atomization
- Moderate spray angle(60°~90°)
- Precise metering of the liquid flow rate

Standard Materials :Nickel plated Brass, SUS303 and SUS316

AA-EF set-ups flow rates and dimensions

---

AA-SF

Siphon fed, Flat Fan spray pattern, 1/4” pipe size,

Design Features
- lowest flow available
- Flat Fan pattern
- Very fine atomizatio
- Small forward projection
- Siphon-fed

Standard Materials :Nickel plated Brass, SUS303 and SUS316

AA-SF set-ups flow rates and dimensions

---

AA-AD

Pressure-fed / Internal Mix / Wide angle Round, 1/4” pipe size

Design Features
- Internal mix
- finest atomization
- 70 Hollow cone spray pattern
- Moderate forward spray projection

Standard Materials :Nickel plated Brass, SUS303 and SUS316

AA-AD set-ups flow rates and dimensions

---

1/2” AA series

AA-2AD Pressure-fed, Internal Mix, wide angle round spray pattern, 1/2” Pipe size

AA-2PR Pressure-fed, Internal Mix, Round spray pattern, 1/2" pipe size

AA-2PF Pressure-fed / Internal Mix, Flat Spray pattern, 1/2” Pipe size

AA-2EF External Mix, Flat Spray Pattern, 1/2” Pipe size

AA-2SR Siphon Fed, External Mix, Round spray pattern, 1/2” Pipe Size