Technical data
Diaphragm pump N87.9 EX
14
Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21
4 Technical data
4.1 N87TTE technical data
Pump materials
Assembly
Material
Pump head
PVDF
Diaphragm
PTFE-coated
Valve plate/seal
FFPM
Tab.9
Pneumatic values
Parameter
Value
Max. permissible operating pressure
[bar rel]
1.5
Ultimate vacuum [mbar abs.]
140
Flow rate at atm. pressure [l/min]*
7.5
Tab.10 *Liters in standard state (1013 mbar)
Other parameters
Parameter
Value
Permissible ambient temperature
[°C / °F]
+ 5 to + 40
Permissible media temperature [°C /
°F]
+ 5 to + 40
Dimensions
See Fig. 3, Chapter
Electrical data
See motor type plate
Gas tightness* of the pump head
< 6 x 10
-3
mbar l/s
Relative air humidity
80% for temperatures to 31°C, de-
creasing linearly to 50% at 40°C
(non-condensing).
Tab.11 *The gas tightness of the pump head is no longer ensured after the pump
head is opened or after replacing diaphragm and valve plates/seals. A leak test
can be used to determine whether the original gas tightness is achieved again.
Weight
Pump type
Value [kg]
N87 EX
6.65
Tab.12
