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Wilo-Sub TWI 6 | Wilo
Your advantages
Wilo-Sub TWI 6

Your advantages

  • Long service life thanks to corrosion-resistant stainless steel, optionally in V4A quality
  • ACS certified for domestic hot water applications
  • A high degree of flexibility thanks to versions in the 4, 6, 8 and 10-inch area
  • High range of performance from 1 to 250 m³/h

Recommended services

Series description
Sub TWI 6

Design

Multistage 6" submersible pump in tie strap version for vertical or horizontal installation

Application

  • For water and drinking water supply from boreholes and rainwater storage tanks
  • Process water supply
  • For municipal water supply, sprinkling and irrigation
  • Pressure boosting
  • Lowering the water level
  • For pumping water in industrial applications
  • For pumping water without long-fibre and abrasive constituents

Equipment/function

  • Multistage submersible-motor pump with radial or semi-axial impellers
  • Integrated non-return valve
  • NEMA coupling
  • Three-phase motor
  • Hermetically cast motors
  • Rewindable motors

Typekey

Example:

Wilo-Sub TWI 6.18-04-C-SD

TWI

Submersible pump

6

Diameter of the hydraulic unit in inches ["]

18

Rated volume flow [m3/h]

04

Number of hydraulic stages

C

Series generation

I

Motor shroud in 1.4571, motor connection via flat male tab

SD

Starting modeWithout = Direct startingSD = star-delta starting

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Fluid temperature: 3-30 °C
  • Minimum flow rate at motor:
    • Hermetically cast motors: 0.08 - 0.16 m/s
    • Rewindable motors (SD-R): 0.1 - 0.5 m/s (depending on type)
  • Max. sand content: 50 g/m3
  • Max. number of starts: 20/h
  • Max. submersion depth:
    • Hermetically cast motors: 350 m
    • Rewindable motors: 100 m
  • Protection class: IP 68
  • Pressure connection: Rp 2½ - Rp 3

Materials

  • Hydraulic housing: Stainless steel 1.4301
  • Impellers: Stainless steel 1.4301
  • Hydraulic shaft: Stainless steel 1.4057
  • Motor housing: EN-GJL or stainless steel 1.4301
  • Motor shaft: Stainless steel 1.4305 or 1.4301

Construction

Submersible pump with ACS approval for vertical or horizontal installation.

Hydraulics

Multistage submersible-motor pump with 4" or 6" NEMA connection and radial or semi-axial impellers with sectional construction. Integrated non-return valve. All parts that come in contact with the fluid are made of corrosion-free materials.

Motor

Three-phase motor for direct and star-delta start. Sealed, hermetically cast motor with enamel-insulated winding, resin-impregnated, or rewindable motor with PVC-insulated winding, self-lubricating bearing, with water-glycol filling.

Cooling

The motor is cooled by the pumped fluid. The motor must always be immersed when operated. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. Horizontal installation must be performed in conjunction with a cooling jacket.

Pressure shroud

The pressure shroud is used for the direct installation of the unit in the pipe network. Standard models are without mounted non-return valves. The maximum inlet pressure is 10 bar.

Scope of delivery

  • Hydraulics and motor ready assembled
  • 4/5/10 m connecting cable approved for drinking water (cross-section: 4x2.5 mm2 or 4x4 mm2)
  • Installation and operating instructions
Documents

Installation and operating instructions

Wilo-Sub TWI 4-6

Article Number 4069717
Edition 2021-10
Page format 209.9 x 297.0 mm
Number of pages 60
PDF (3 MB)

Wilo-Sub TWI 4-6

Article Number 4069717
Edition 2021-10
Page format 209.9 x 297.0 mm
Number of pages 12
PDF (980 KB)

General overview

General Overview 2022 - International version

Edition 2022
Page format 209.9 x 297.0 mm
Number of pages 78
PDF (38 MB)

Certification booklet

Wilo-Sub TWI 4, Wilo-Sub TWI 6/TWI 06, Wilo-Sub TWI 8/TWI 08, Wilo-Sub TWI 010

Article Number 6080451
Edition 2022-02
Page format 209.9 x 297.0 mm
Number of pages 24
PDF (4 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)

Certificate

Wilo-Sub TWI

Article Number 6080451
Edition 1612
Page format A4
Number of pages 14
PDF (388 KB)
Product list
Number of results: 94
0.55 … 37 kW
[94]
Product descriptionMotor diameter ØNumber of stagesRated power P2Minimum efficiency index (MEI)ConnectionArticle number
Sub TWI 6.18-07-C
4 in (")
7
3.7 kW
0.4
Rp 2½
6075205
Sub TWI 6.18-10-C
4 in (")
10
5.5 kW
0.4
Rp 2½
6075206
Sub TWI 6.18-13-C
5 in (")
13
7.5 kW
0.4
Rp 2½
6075207
Sub TWI 6.18-17-C
5 in (")
17
9.3 kW
0.4
Rp 2½
6075208
Sub TWI 6.18-20-C
5 in (")
20
11 kW
0.4
Rp 2½
6075209
Sub TWI 6.18-20-C-SD
5 in (")
20
11 kW
0.4
Rp 2½
6075210
Sub TWI 6.18-22-C
5 in (")
22
15 kW
0.4
Rp 2½
6075211
Sub TWI 6.18-22-C-SD
5 in (")
22
15 kW
0.4
Rp 2½
6075212
Sub TWI 6.18-24-C
5 in (")
24
15 kW
0.4
Rp 2½
6075213
Sub TWI 6.18-24-C-SD
5 in (")
24
15 kW
0.4
Rp 2½
6075214
Sub TWI 6.18-27-C
5 in (")
27
15 kW
0.4
Rp 2½
6075215
Sub TWI 6.18-27-C-SD
5 in (")
27
15 kW
0.4
Rp 2½
6075216
Sub TWI 6.18-29-C
5 in (")
29
18.5 kW
0.4
Rp 2½
6075217
Sub TWI 6.18-29-C-SD
5 in (")
29
18.5 kW
0.4
Rp 2½
6075218
Sub TWI 6.18-31-C
5 in (")
31
18.5 kW
0.4
Rp 2½
6075219
Sub TWI 6.18-31-C-SD
5 in (")
31
18.5 kW
0.4
Rp 2½
6075220
Sub TWI 6.18-33-C
5 in (")
33
18.5 kW
0.4
Rp 2½
6075221
Sub TWI 6.18-33-C-SD
5 in (")
33
18.5 kW
0.4
Rp 2½
6075222
Sub TWI 6.18-36-C
5 in (")
36
22 kW
0.4
Rp 2½
6075223
Sub TWI 6.18-36-C-SD
5 in (")
36
22 kW
0.4
Rp 2½
6075224
Sub TWI 6.18-38-C
5 in (")
38
22 kW
0.4
Rp 2½
6075225
Sub TWI 6.18-38-C-SD
5 in (")
38
22 kW
0.4
Rp 2½
6075226
Sub TWI 6.18-40-C
5 in (")
40
22 kW
0.4
Rp 2½
6075227
Sub TWI 6.18-40-C-SD
5 in (")
40
22 kW
0.4
Rp 2½
6075228
Sub TWI 6.30-04-C
4 in (")
4
3.7 kW
0.4
Rp 3
6075231
Sub TWI 6.30-06-C
4 in (")
6
5.5 kW
0.4
Rp 3
6075232
Sub TWI 6.30-08-C
5 in (")
8
7.5 kW
0.4
Rp 3
6075233
Sub TWI 6.30-11-C
5 in (")
11
11 kW
0.4
Rp 3
6075234
Sub TWI 6.30-11-C-SD
5 in (")
11
11 kW
0.4
Rp 3
6075235
Sub TWI 6.30-13-C
5 in (")
13
15 kW
0.4
Rp 3
6075236
Sub TWI 6.30-13-C-SD
5 in (")
13
15 kW
0.4
Rp 3
6075237
Sub TWI 6.30-15-C
5 in (")
15
15 kW
0.4
Rp 3
6075238
Sub TWI 6.30-15-C-SD
5 in (")
15
15 kW
0.4
Rp 3
6075239
Sub TWI 6.30-17-C
5 in (")
17
15 kW
0.4
Rp 3
6075240
Sub TWI 6.30-17-C-SD
5 in (")
17
15 kW
0.4
Rp 3
6075241
Sub TWI 6.30-19-C
5 in (")
19
18.5 kW
0.4
Rp 3
6075242
Sub TWI 6.30-19-C-SD
5 in (")
19
18.5 kW
0.4
Rp 3
6075243
Sub TWI 6.30-21-C
5 in (")
21
18.5 kW
0.4
Rp 3
6075244
Sub TWI 6.30-21-C-SD
5 in (")
21
18.5 kW
0.4
Rp 3
6075245
Sub TWI 6.30-24-C
5 in (")
24
22 kW
0.4
Rp 3
6075246
Sub TWI 6.30-24-C-SD
5 in (")
24
22 kW
0.4
Rp 3
6075247
Sub TWI 6.30-26-C
5 in (")
26
30 kW
0.4
Rp 3
6075248
Sub TWI 6.30-26-C-SD
5 in (")
26
30 kW
0.4
Rp 3
6075249
Sub TWI 6.30-29-C
5 in (")
29
30 kW
0.4
Rp 3
6075250
Sub TWI 6.30-29-C-SD
5 in (")
29
30 kW
0.4
Rp 3
6075251
Sub TWI 6.30-32-C
5 in (")
32
30 kW
0.4
Rp 3
6075252
Sub TWI 6.30-32-C-SD
5 in (")
32
30 kW
0.4
Rp 3
6075253
Sub TWI 6.30-35-C
5 in (")
35
30 kW
0.4
Rp 3
6075254
Sub TWI 6.30-35-C-SD
5 in (")
35
30 kW
0.4
Rp 3
6075255
Sub TWI 6.50-03-C
4 in (")
3
5.5 kW
0.4
Rp 3
6075257