15
Product overview
3.4
High-pressure nozzles
3.4.1 Design
1
2
3
1 Filter insert 40μm
2 Nozzle hole / nozzle opening
3 Notch for attaching the nozzle wrench when replacing the nozzle
Fig. 4: High-pressure nozzle design
3.4.2 Properties
The nozzles mainly differ in terms of the liter output during operation. The design and properties are
identical. The letter (S, M, or L) is embossed on the nozzle edge to distinguish between the nozzles.
The humidification output relates to the working pressure at 85 bar. The pressure in the high-pressure
ring is highly dynamic due to installation and the frequency-controlled high-pressure system. On average,
a working pressure of 85 bar is achieved at the nozzles.
Variant
[Nozzle type]
Operating pres-
sure
[bar]
Humidification
output
[l/h]
Droplet size
[μm]
Cleanroom class
(ISO 14644-1)
1)
S nozzle
Min. 50
Typical: 85
Max. 110
Up to 1.0
< 15
7, 8, 9
M nozzle
Min. 50
Typical: 85
Max. 110
Up to 1.5
< 15
7, 8, 9
L nozzle
Min. 50
Typical: 85
Max. 110
Up to 2.5
< 15
7, 8, 9
1)
The droplet size and number of droplets in the aerosol mist decreases with increasing distance from
the nozzle and corresponds to the conditions for cleanroom class 7 in accordance with DIN EN ISO
14644-1.
CAUTION!
Use of ultrapure water (DI water) in clean rooms
The nozzles can be operated with pure water (RO water) or ultrapure water (DI water). Residual min-
erals in pure water can lead to dust formation in the room. Operation with ultrapure water is therefore
planned for use in cleanrooms!
CAUTION!
Use of ultrapure (DI) water and S-nozzles
Due to their micro-fine bore, S nozzles should not be operated with pure water. The remaining residual
minerals may clog the nozzle.
Summary of Contents for DRAABE HighPur
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