Internal Mix, Pressure-Fed Pneumatic Spray Nozzles
John Brooks Company carries a complete range of two-fluid (typically compressed air & water) atomizing BETE nozzles. The BETE XAPF spray nozzle is part of the BETE XA Spray Nozzle system. It uses the energy in compressed air to produce highly atomized sprays at low flow rates. XA Nozzles produce eight 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.
Design Features of BETE XAPF Spray Nozzles:
- Internal mix
- Very fine atomization
- Flat fan, wide angle spray patterns (between 80° and 90°)
Internal & External Mix Setups:
Internal Mixing
- Liquid and air streams come together inside the nozzle and are mixed, and they exit through the same orifice.
- The streams are not independent; airflow changes will affect the liquid flow.
- Not suitable for viscous liquids above 200 cP.
External Mixing
- The air and liquid streams exit the nozzle independently through each orifice.
- Air and liquid flow rates can be independently controlled, allowing precise fluid metering.
- Suitable for all liquids, including viscous liquids above 200 cP.
Siphon Set-Ups:
Internal and External Mix Set-ups require the liquid supplied to the nozzle under pressure from a municipal water supply, pump, or pressure vessel. 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 a pump. They provide the lowest flow rates available in the XA series (as low as 0.1 GPH).
Pressure System Set-Ups:
Spray Patterns:
- Fan Spray Nozzles
- Air Atomizing Spray Nozzles
How Spray Pattern is Achieved:
- In a pressure-fed system, the liquid is under pressure to either internal or external mix BETE XA Series nozzles. Air and liquid regulators control the fluid delivery pressure, while the air filter and liquid strainer ensure the supplied fluids are of high quality. Maintaining operational control is done by manual or solenoid valves used with various hardware assemblies.
- Liquid and air streams combine inside the nozzle, are mixed, and exit through the same opening, creating a deflected fan spray pattern.
- The streams are not independent; shifts in airflow will influence the liquid flow.
| Available Spray Angle | Materials | Available Connection Types |
| 85° |
Nickel-plated Brass, 303, 316, Nickel-plated Brass / 304, 303 / 304 |
|
Applications for BETE XAPF Spray Nozzles:
- Air Atomizing
- Air Conditioning
- Coating
- Concrete Curing
- Cooling: Evaporative
- Fogging
- Humidification
- Lubrication
- Misting
- Moistening
- Odor Control
- Scrubbing: Conditioning
- Scrubbing: Dry
