Wilo NPG Series Installation And Operating Instructions Manual page 7

English
Maximum effective pressure at discharge in bar
DN
Impeller 150
200 4
250
300
315
350
355
400
450
500 16
650
3.2 Nomenclature
Designation of pump:
NPG 200 / 315 - 37 / 4-12 - ...
NPG Type of pump WILO
200 Nominal width of pipe mount
315 Diameter of impeller
37 Power of motor
4 2 or 4 poles motor
12 05 Mechanical seal-standard coupling
12 Mechanical seal-coupling with
01 Packing gland-standard coupling
02 Packing gland-coupling with spacer
XX Other design
... Options
Each pump is supplied with the following name-
plate:
Nameplate
1
2
3
4
5
1 Type of pump
2 Flow rate
3 Head
4 Date of construction and article number
5 Diameter of impeller
6 Speed of rotation
7 Mass
8 Maximum admissible pressure at 20 °C
9 Maxi/Mini temperature
10 Radial/Thrust bearing
10
NPG (cast iron EN-GJL-250) - PN 10
DN DN DN DN
200 250 300 350
4 4
4
8 8
4
8 8
8 8 8
8
10 10 10
spacer
NPG (cast iron EN GJS-400-15) - PN 16 - PN 10
DN DN DN DN
400 500 150 200
6
6
12
12
12
6.5 4 15
6.5
4 Installation
4.1 Location
The pump should be located to allow room for
access, ventilation, maintenance and inspection
with ample headroom for lifting and should be as
close as practicable to the supply of liquid to be
pumped.
6
7
8
9
10
DN DN DN DN
250 300 350 400
6
6
12
6
12
12 12
12
15 15 10
10
Wilo AG 09/2005
DN
500
6