Sub TWI 6.18-13-C | Wilo
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Sub TWI 6.18-13-C

Technical data
Tender text

Fully submersible, multistage pump for pumping industrial and drinking water (ACS rating) with radial or semi-axial impellers in sectional construction for vertical or horizontal installation, with built-in non-return valve. Corrosion-free, three-phase AC motor for direct or star-delta starting with water-glycol filling, alternatively with drinking water filling. Hermetically cast motor with enamel-insulated winding, resin-impregnated or rewindable with PVC-insulated winding, and self-lubricating bearings. The motor is cooled by the pumped fluid. Therefore, the unit must always be operated immersed. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. In cases of horizontal installation, a cooling jacket must always be provided .

Scope of delivery:

  • Submersible pump with connection cable and ACS rating
  • Installation and operating instructions
Operating data
Fluid media
Max. delivery head Hmax
140.9 m
Minimum efficiency index (MEI)
Pipe connection on the discharge side DNd
Rp 2½
Maximum operating pressure p
40.0 bar
Max. sand content
50 g/m³
Protection class motor
Max. immersion depth
350 m
Min. fluid temperature Tmin
3 °C
Max. fluid temperature Tmax
30 °C
Net weight, approx. m
68 kg
Dimensions Dmax
142 mm
Motor data
Motor design
Submersible motor acc. IEC 60034-1
Mains connection
3~400 V, 50 Hz
Rated power P2
7.5 kW
Rated speed n
2860 1/min
Rated current IN
17.4 A
Activation type
Direct (D)
Max. switching frequency t
20 1/h
Motor diameter DM
137 mm
Min. flow rate at the motor m/s
0.1 m/s
Connection cable length
4 m
Cable cross-section
4G4 mm²
Pump housing
Stainless steel
Motor housing
Cast iron
Stainless steel
Stainless steel
Ordering information
Net weight, approx. m
68 kg
Product description
Sub TWI 6.18-13-C
Article number

Installation and operating instructions

Wilo-Sub TWI 4-6

Article Number 4069717
Edition 0801
Page format A4
Number of pages 60
PDF (3 MB)

Wilo-Sub TWI 4-6

Article Number 4069717
Edition 0801
Page format A4
Number of pages 15
PDF (891 KB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)