Technical Characteristics; Materials; Performance And Operating Limits - Wilo Drain SP Notice De Montage Et De Mise En Service

5 : (21) Complete pump set
11 Standard
12 With portable frame
Close coupled
13 On trolley
14 On trailer
21 Standard
22
On base frame
Biblock
23
On trolley
24
On trailer
31
On base frame
With bearing
assembly
35
Bareshaft
6 : (T) Motor power supply
T Three-phase
M Single phase
D Diesel
E Gasoline
N Without motor
7 : (11) Installed power (in kW)
8 : (2) Number of pole for an electric motor
Number of cylinders for an engine
9 : (K) Motor options
Code Option for
[empty]
K Electric motor
S
A, B, C, E,
Engine
F, G, H, N
10 : (3B) ATEX marking
This section of the pump code is indicated only if pump is ATEX certified.
Marking is engraved on pump nameplate. Correspondence between
code and ATEX description is indicated in the following table :
Code Related ATEX marking
A ZONE 1 - CAT.2 - II 2G T(x)
B ZONE 1 - CAT.2 - II 2G - Exd IIB T4
2 C ZONE 1 - CAT.2 - II 2G - Exd IIC T4
D ZONE 1 - CAT.2 - II 2G - Exde IIB T4
E ZONE 1 - CAT.2 - II 2G - Exde IIC T4
A ZONE 2 - CAT.3 - II 3G T(x)
B ZONE 2 - CAT.3 - II 3G - Exd IIB T4
3 C ZONE 2 - CAT.3 - II 3G - Exd IIC T4
D ZONE 2 - CAT.3 - II 3G - Exde IIB T4
E ZONE 2 - CAT.3 - II 3G - Exde IIC T4
11 : (-X) Special design
The marking "x" corresponds to a specific design and is indicated at the
end of the construction code. The detailed data regarding the pump are
available in the acknowledgment of order.

5.2 TECHNICAL CHARACTERISTICS

5.2.1

MATERIALS


Materials
The following table indicates pump parts materials according to pump
material code (see chapter « 5.1 Type key).
Code Pump casing Impeller
F Cast iron Cast iron
E Cast iron SS 316
Cast iron + Bronze or stainless
Z
zinc anode steel
B Bronze Bronze
X SS 316 SS 316
Description
No option
CTP sensor
ON/OFF switch
Variants of pump sets with engine
Shaft / sleeve
Cast iron or carbon
Stainless Steel
steel
Stainless Steel Stainless Steel
Bronze
Stainless Steel
steel
Stainless Steel Bronze
SS 316 Stainless Steel

The following table indicates mechanical seal and gaskets materials
according to pump material code (see chapter « 5.1 Type key).
Code
A
B
C
F
G
H
J
K
*Available up to size 2''
5.2.2
5.2.2.1
Maximum working temperature will be the most restrictive temperature
selected in the tables hereafter :
Temperature range according casing material :
Temperature range according gaskets :
Temperature range according motor assembly :
5.2.2.2
All pumps : 6 bar.
5.2.2.3
S pumps are designed so that they can be used on the complete
hydraulic curve range.
Runing the pump at duty points on extreme points of the curve
will drive to a faster wear of some pump parts.
When the pump is used in an ATEX zone it is necessary to measure
the duty point and check that temperature increase corresponding
to each working condition is acceptable regarding selected surface
temperature.
The formula below gives the correspondence between surface
temperature / fluid temperature and pump efficiency :
T =T +
o f v
Wear plate 
=[(g.H)/(c.)]*(1-)
v
With :
c=calorific capacity of fluid in J/Kg.K
or stainless
g=gravity in m/s²
H=pump head in m
T =liquid temperature in °C
f
T =surface temperature in °C
o
Sealing
Pump size Mechanical seal
All SiC/Ceram/FPM
All SiC/Ceram/FPM
40 to 42 WC/SiC/PTFE
45 to 161 WC/SiC/PTFE (bellows)
170 to 230 WC/SiC/PTFE
All Carbon/SiC/FPM
All Carbon/SiC/FPM
45 to 161 Carbon/SiC/PTFE
All Carbon/SiC/EPDM
All WC/WC/NBR

PERFORMANCE AND OPERATING LIMITS

TEMPERATURE
Cast iron -30 to +140°C
Stainless steel -40 to +140°C
NBR - 20 to +120°C
FPM -20 to +140°C
PTFE -40 to +140°C
EPDM -40 to +120°C
Close coupled
Biblock or on baseframe
MAXIMUM WORKING PRESSURE
OPERATING RANGE & MINIMUM FLOW
ENGLISH
Gaskets NRV
NBR NBR
FPM FPM
PTFE PTFE
PTFE PTFE*
PTFE No
NBR NBR
FPM FPM
PTFE PTFE*
EPDM EPDM
NBR NBR
-40 to +75°C
-40 to +140°C
9