Technical Data - LUTZ B70H Manuel D'utilisation

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• 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

Operating pressure* up to
Flow rate* up to
Viscosity max. (cps or mPas)
Medium temperature max.
with different stator materials
Ambient temperature
Speed max.
* T he maximum flow rate is a value determined by means of a test bench and measured with water at a medium
temperature of approx. 68 °F/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
Outer tube, rotor and drive shaft
O-rings
Mechanical seal
Stator
12.1
87 psi
6 bar
3.2 GPM
12 l/min.
NBR light
FPM
PTFE
PTFE Ex
Material
SS 1.4571, 1.4404
EPDM, FPM, NBR
Carbon / CrMo casting,
alternatively: SiC/SiC, WoC/SiC, WoC/WoC
PTFE, NBR, FPM
Pump size
25.1 25.2
116 psi 145 psi
8 bar 10 bar
6.6 GPM 6.6 GPM
25 l/min. 25 l/min.
100000
176 °F / 80 °C
284 °F / 140 °C
284 °F / 140 °C
212 °F / 100 °C
-4 up to 104 °F
-20 up to 40 °C
900 rpm
50.1 75.1
116 psi 116 psi
8 bar 8 bar
13.2 GPM 19.8 GPM
50 l/min. 75 l/min.
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