7
0698-451 B70H - 07/2020
en
• Note the limit values for temperature and viscosity of the liquid being pumped (
→
technical data).
• The pump may only be operated with the discharge closed, if a bypass valve with return line has
been installed.
• Ensure that the safety valves for the protection of the pump against inadmissible increase of pressure
are not higher set than the maximum operating pressure (
→
technical data).
• For the protection of the pump sealing the pump is not allowed to run dry. This must be permanently
controlled by the operator.
If the product and supplied accessories are used for other purposes than the intended purpose, it is the
responsibility of the user to check the suitability and admissibility. Product use not confirmed in writing
by the manufacturer absolves the manufacturer of any liability.
The manufacturer is not liable for consequences of incorrect treatment, use, maintenance, servicing and
operation of the appliance, as well as normal wear and tear. The same applies if faults arise from intervention
or configurations on the part of the user not confirmed by the manufacturer.
2.2.1 Technical data
Pump size
12.1
25.1
25.2
50.1
75.1
Operating pressure up to (bar)*
6
8
10
8
8
Flow rate up to (l/min)*
12
25
25
50
75
Viscosity max. (mPas)
100000
Medium temperature max.
(°C) with different stator
materials
NBR light
80
FPM
140
PTFE
140
PTFE Ex
100
Ambient temperature (°C)
-20 up to 40
Speed max. (rpm)
900
* The maximum flow rate is a value determined by means of a test bench and measured with water at a medium
temperature of approx. 20°C. The measurement is carried out at the pressure joint of the pump, without hose,
nozzle or flow meter. The flow rate achievable in use is lower and depends on the individual application, the media
properties and the configuration of the pump. The max. delivery head is also dependent on the pump design,
motor and medium.
Part
Material
Outer tube, rotor and drive shaft
SS 1.4571, 1.4404
O-rings
EPDM, FPM, NBR
Mechanical seal
Carbon / CrMo casting,
alternatively: SiC/SiC, WoC/SiC, WoC/WoC
Stator
PTFE, NBR, FPM