en
Product description
52
WILO SE 2021-10
Max. immersion depth
20 m (66 ft)
Protection class
IP68
Insulation class
H
Max. switching frequency
15/h
5.1.2
Seal
Large-volume sealing chamber with double shaft sealing. The sealing chamber is filled
with white oil and absorbs the leakage from the seal on the fluid side. A corrosion- and
wear-resistant mechanical seal is used on the fluid side. The seal on the motor side in-
volves either a rotary shaft seal or a mechanical seal.
5.1.3
Propeller
2- or 3-bladed propeller made of solid material with a nominal propeller diameter of
200 mm to 400 mm. Clogging-free propeller geometry design made possible by back-
ward-curved incoming flow edge.
OPTI-TR 20-1 ...
EXCEL-TRE 20 ...
OPTI-TR 22 ...
OPTI-TR 28-1 ...
OPTI-TR 30-1 ...
EXCEL-TRE 30 ...
OPTI-TR 40-1 ...
EXCEL-TRE 40 ...
Nominal diameter in mm (in)
200
(8)
200
(8)
220
(8.5)
280
(11)
300
(11.5)
300
(11.5)
400
(16)
400
(16)
Number of blades
3
3
3
2
3
3
3
3
5.1.4
Materials
OPTI-TR 20-1 ...
EXCEL-TRE 20 ...
OPTI-TR 22 ...
OPTI-TR 28-1 ...
OPTI-TR 30-1 ...
EXCEL-TRE 30 ...
OPTI-TR 40-1 ...
EXCEL-TRE 40 ...
Motor housing
EN-GJL-250 (ASTM A48 Class 35/40B)
−
−
•
•
•
•
•
•
1.4408
(ASTM A 351)
•
•
−
−
−
−
−
−
Seal housing
1.4408
(ASTM A 351)
•
•
•
•
•
•
•
•
Seal, on the fluid side
SiC/SiC
•
•
•
•
•
•
•
•
Seal, on the motor side
NBR (nitrile)
−
−
•
−
•
•
•
•
SiC/SiC
•
•
−
•
−
−
−
−
Propeller
1.4408
(ASTM A 351)
•
•
•
•
•
•
•
•
• = standard, − = not available
5.2
Monitoring devices
Overview of possible monitoring devices for submersible mixers
without Ex rating
:
