Technical Data - Wilo NL Serie Instrucciones De Instalación Y Funcionamiento

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11. Technical data

All the technical data of the pump or pump/unit
are described in the following chapter. If other
information were necessary, do not hesitate to
contact our technical department.
Pressure component operating limits
Material
Body cast iron
with impeller
cast iron or
impeller bronzes
Shaft sealing operating limits
Shaft sealing execution
Packing ring seal
Mechanical seal
NOTE: All indicated operating limits are not valid
for all liquids, which can be pumped. See techni-
cal data or delivery note.
Flange locations
Axial suction flange, discharge flange radialy
upwards.
Flanges
For body cast iron, DIN 2533 PN16, except for
150-200, 150-250 and 200-250 models, they are
PN10 at suction.
Direction of rotation
Clockwise seen from the drive end of the pump.
Materials of construction, and of shaft seals
See chapter 4.
Vibrations
NL range pumps comply with VDI 2056 and ISO
5199 Class K for pumps with a driving power of
up to 15 kW and Class M with a driving power of
more than 15 kW.
32
Temperature Pressure
16 bar 32-125 to 80-315
-20ºC to
80-400 to 300-
10 bar
120ºC
14 bar 150-500
14 bar 32-125 to 80-315
80-400 to
120ºC to
9 bar
170ºC
300-500
8 bar 150-500
Temperature limits
-40°C to +110°C
-20°C to +120°C
Noise level
The noise levels of the pump comply with the
Directive 001/30 - 1992 of the EUROPUMP
Commission.
The following table provides approximate values:
Type
500
Pump without motor
Note that additional noise can be generated by:
• The driver.
• A possible misalignment of the coupling.
• Pipework (note: the larger the pipe diameter, the
lower the pipe noise.
Volute casing pump
WILO AG 09/2007