Technical data
Swing Piston Pumps NPK 25
6
Translation of original Operating and Installation Instructions, english, KNF 121581-121584 08/16
4. Technical data
Pump materials
Assembly
Material
Head plate; cylinder
Aluminium
Valve plate
Stainless steel
Piston seal
PTFE compound
O-ring
FPM
Retainer plate
Aluminium
Tab. 3
Pneumatic values
NPK 25 AC
Parameter
Value
Max. permissible operating pressure [bar g]
5
Ultimate vacuum [mbar abs.]
180
Delivery rate at atm. pressure [l/min]*
30
Tab. 4
*Liters in standard state (1,013 mbar)
NPK 25 DC
Parameter
Value
Max. permissible operating pressure [bar g]
4
Ultimate vacuum [mbar abs.]
180
Delivery rate at atm. pressure [l/min]*
25
Tab. 5
*Liters in standard state (1,013 mbar)
Electrical data
Parameter
Value
Electrical data
See type plate
Protection class
IP 20
Tab. 6
The AC motors used are fitted as standard with a thermal-switch to
protect against overloading.
Other parameters
Parameter
Values
Permissible
ambient temperature
+ 5 °C to + 40 °C
Permissible media temperature
+ 5 °C to + 40 °C
Gas-tightness
The gas-tightness of the pump
is dependent on the medium
used.*
* If you have questions about this, please contact your KNF advisor.
Tab. 7