Standard
Chemical Pump
of Plastic Material
Type Series NE
ISO 2858/DIN EN 22858
Conforms to ATEX
Unit Construction
Hydraulic
According to directive 94/9/EG
(ATEX), the NE pump is assigned to:
Equipment group II
Equipment category 2G
Temperature class T3 and T4
As FK- or FE series the chemical
standard pumps are also available in
unit construction. The connection
dimensions follow ISO 2858/ DIN EN
22858.
Following the different requirements
the standard pump can be equipped
with closed (G) or with a semi open
impeller (O). The use of a semi open
impeller is recommended for solid
loaded fluids. A non-chocable-pump
(F), which should be used for liquids
with higher solid content, can be
realized after a few modifications.
The hydraulic type is indicated with
the fourth letter of the pump´s name.
Shaft seal
The WERNERT bellow-type axial face
seal is of unique simple construction
that has proved itself a thousand
times over.
It can be equipped with quench
and/or continuous flushing if required.
Various single and double acting axial
face seals made by well known
manufacturers are also available for
special applications.
Process Design
This constructional conception allows
a quick exchange of the hydraulic
side of the pump, without detaching
the flanges or dismounting of the
electric motor.
Materials
The choice of plastics depends on
the chemical, thermal, mechanical
and abrasive loads.
The following plastics are used to
make the standard chemical pump
and are indicated by the third letter
of the type reference.
NEPO/NEPG/NEPF:
Ultra high molecular weight
low pressure polyethylene (UHMWPE)
NEWO/NEWG/NEWF:
Armoured Mineral Cast WERNIT®
NEKO/NEKG/NEKF:
Polyvinylidenefluoride (PVDF)
NETO/NETG/NETF:
Polytetrafluorethylene (PTFE) or
Perfluoralkoxy (PFA)
The temperature range in which these
materials can be used depends on
the pumping medium and is between
–50° C und +160° C.
Characteristic curves
Special applications on
request. We reserve the
right to make technical
modifications.
n = 1450 min-1
70
250-200-400*
IV
60
200-150-400
150-125-315
50
III
125-80-315
40
80-50-315
30
125-100-315
*Transnorm pump
II
III
IV
Pumps with same
bearing support size
80-50-250
I
50-32-200
10
1
2
3
50-32-160
0
40-25-160*
0
200-150-250
4 5 6 7 8 910
6540200
80
-50
-20
0
I
20
Head m
0
50-32-250
20
10
0-6
5-2
50
12
5-8
0-2
12
50
5-1
00
12
-20
50
10
025
0
II
65-40-250
125-80-200
30 40 50 607080 100
200
300
500 700 1000
2000
Flow m³/h
130
n = 2900 min-1
120
110
I
50-32-200
0
40-25-160*
65-40-20
0
50
I
II
III
Pumps with same
bearing support size
Head m
0
30
20
50
-3
216
0
40
*Transnorm pump
125-100-25
0
60
III
125-100-20
0
70
80-5
0-20
0
80
80-50
-250
10065-2
50
125
-80250
50-32-250
65-4
0-25
0
90
125
-80
-20
0
II
100
10
0
1
2
Flow m³/h
3
4
5 6 7 8 9 10
20
30 40 50 60 70 80 100
200
300 400 500 700 1000
Cross section
Part-No.
101
103
130
145
183
210
233
321
350
360
361
420.1
420.3
443
472
475
481
482
505
506.2
507
511
524
552.2
921
931
932
130
101
103
420.1 321
233
350
932 321 361
482
481
472
475
420.3
524
921
506.2
931
511
443 360 507 552.2 505
145
183
210
The type illustrated is the one with semi open impeller.
Only order spares according to the relevant parts list.
Dimensions table
a
f
h2
DNA
h1
DNE
x
k
depending on
manufacturer
Type NE
40-25-160*
50-32-160
50-32-200
50-32-250
65-40-200
65-40-250
80-50-200
80-50-250
80-50-315
100-65-250
125-80-200
125-80-250
125-80-315
125-100-200
125-100-250
125-100-315
150-125-315
200-150-250
200-150-400
250-200-400*
Flange
PN 16
DNE DNA
40 25
50 32
50 32
50 32
65 40
65 40
80 50
80 50
80 50
100 65
125 80
125 80
125 80
125 100
125 100
125 100
150 125
200 150
200 150
250 200
* Transnorm pump
Designation
Pump casing
Annular casing
Casing Part
Adaptor
Support foot
Shaft
Left-hand impeller
Radial ball bearing
Bearing housing
Bearing cover
Bearing end cover
Shaft seal ring
Shaft seal ring
Seal insert
Stationary seal ring
Rotating seal ring
Bellows
Bellows seat
Loose collar
Retaining ring
Thrower
Centering ring
Shaft wearing sleeve
Spanner
Shaft nut
Lockwasher
Circlips
a
80
80
80
100
100
100
100
125
125
125
125
125
125
125
140
140
140
160
160
180
f
385
385
385
500
385
500
385
500
500
500
500
500
530
500
530
530
530
530
670
670
h1
132
132
160
180
160
180
160
180
225
200
180
225
250
200
225
250
280
280
315
425
h2
160
160
180
225
180
225
200
225
280
250
250
280
315
280
280
315
355
375
450
500
x
100
100
100
100
100
100
100
100
100
140
140
140
140
140
140
140
140
180
180
180
Dimensions in mm
WERNERT-PUMPEN GMBH · P.O.Box 10 21 53 · D-45421 Mülheim an der Ruhr · Germany
Phone: +49 (0) 208 / 37 58 - 0 · Fax: +49 (0) 208 / 40 74 72 · e-mail: [email protected] · http://www.wernert.de