Technical data
20
Chemically-resistant Laboratory pump N820.18 EX / N840.18
6 Technical data
Technical data
Pump materials
Assembly
Pump head
Diaphragm
Valve
Connection
Hose connector
Gas ballast
Tab.9: Pump materials
Pneumatic data
N820G
Parameter
Max. permissible operating
pressure [bar rel*]
Ultimate vacuum [mbar abs.]
At min. speed:
Gas ballast closed
Gas ballast open
At max. speed:
Gas ballast closed
Gas ballast open
Flow rate at atm. pressure [l/
min]**
At min. speed:
At max. speed:
Tab.10: Pneumatic data N820G
*Bar rel related to 1013 hPa
**Liters in standard state (1013 hPa, 20°C)
Translation of Original Operating Instruction, KNF 317428-317425 05/21
Material
Modified PTFE
PTFE-coated
FFPM
PTFE/FFPM
PVDF/FFPM
PTFE/FFPM
Value
0.1
≤ 6
≤17
≤ 8
≤15
10 ± 10%
20 ± 10%
EX