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Wilo-Sub TWI 4 | Wilo
Your advantages
Wilo-TWI 4

Your advantages

  • Long service life thanks to corrosion-resistant stainless steel, optionally in V4A quality
  • ACS certified for drinking 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 4, (3~400 V)

Design

Multistage 4" submersible pump in tie strap version for vertical or horizontal installation

Application

  • For water and drinking water supply from boreholes and rainwater storage
  • 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 impellers
  • Integrated non-return valve
  • NEMA coupling
  • Single-phase or three-phase motor
  • Hermetically cast motors

Typekey

E.g.

Wilo-Sub TWI 4.01-09-C

TWI

Submersible pump

4

Diameter of the hydraulic unit in inches ["]

01

Rated volume flow [m3/h]

09

Number of hydraulic stages

C

Series generation

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Fluid temperature: 3 – 30 °C
  • Minimum flow rate at motor: 0.1 m/s
  • Max. sand content: 50 g/m3
  • Max. number of starts: 20/h
  • Max. immersion depth: 150 m
  • Protection class: IP68
  • Pressure connection: Rp 1¼ – Rp 2

Materials

  • Hydraulic housing: 1.4301 stainless steel
  • Impellers: 1.4301 stainless steel
  • Hydraulics shaft: 1.4057 stainless steel
  • Motor housing: 1.4301 stainless steel
  • Motor shaft: 1.4305 stainless steel

Construction

Submersible pump with ACS approval for vertical or horizontal installation.

Hydraulics

Multistage submersible-motor pump with 4" 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

Corrosion-free single-phase or three-phase motor for direct starting. Sealed and hermetically cast motor, resin-impregnated, with enamel-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 + motor fully assembled
  • 1.5/2.5 m connecting cable approved for drinking water (cross-section: 4x1.5 mm2)
  • Single-phase version including switchbox with capacitor, thermal motor protection and On/Off switch
  • Installation and operating instructions
Documents

Installation and operating instructions

Wilo-Sub TWI 4..., TWI 4-...-QC

Article Number 6061724
Edition 1110
Page format A4
Number of pages 344
PDF (2 MB)

Wilo-Sub TWI 4..., TWI 4-...-QC

Article Number 6061724
Edition 1110
Page format A4
Number of pages 28
PDF (516 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: 104
0.37 … 7.5 kW
[104]
Product descriptionMotor diameter ØNumber of stagesRated power P2Minimum efficiency index (MEI)ConnectionArticle number
Sub TWI 4.01-09-D (1~230 V, 50 Hz)
4 in (")
9
0.37 kW
0.4
Rp 1¼
6091301
Sub TWI 4.01-09-D (3~400 V, 50 Hz)
4 in (")
9
0.37 kW
0.4
Rp 1¼
6091300
Sub TWI 4.01-14-D (1~230 V, 50 Hz)
4 in (")
14
0.55 kW
0.4
Rp 1¼
6091303
Sub TWI 4.01-14-D (3~400 V, 50 Hz)
4 in (")
14
0.55 kW
0.4
Rp 1¼
6091302
Sub TWI 4.01-18-D (1~230 V, 50 Hz)
4 in (")
18
0.55 kW
0.4
Rp 1¼
6091305
Sub TWI 4.01-18-D (3~400 V, 50 Hz)
4 in (")
18
0.55 kW
0.4
Rp 1¼
6091304
Sub TWI 4.01-21-CI (3~400 V, 50 Hz)
4 in (")
21
0.75 kW
0.4
Rp 1¼
6079241
Sub TWI 4.01-21-D (1~230 V, 50 Hz)
4 in (")
21
0.75 kW
0.4
Rp 1¼
6091307
Sub TWI 4.01-21-D (3~400 V, 50 Hz)
4 in (")
21
0.75 kW
0.4
Rp 1¼
6091306
Sub TWI 4.01-28-CI (3~400 V, 50 Hz)
4 in (")
28
1.1 kW
0.4
Rp 1¼
6079242
Sub TWI 4.01-28-D (1~230 V, 50 Hz)
4 in (")
28
1.1 kW
0.4
Rp 1¼
6091309
Sub TWI 4.01-28-D (3~400 V, 50 Hz)
4 in (")
28
1.1 kW
0.4
Rp 1¼
6091308
Sub TWI 4.01-36-D (1~230 V, 50 Hz)
4 in (")
36
1.1 kW
0.4
Rp 1¼
6091311
Sub TWI 4.01-36-D (3~400 V, 50 Hz)
4 in (")
36
1.1 kW
0.4
Rp 1¼
6091310
Sub TWI 4.01-42-CI (1~230 V, 50 Hz)
4 in (")
42
1.5 kW
0.4
Rp 1¼
6079206
Sub TWI 4.01-42-D (1~230 V, 50 Hz)
4 in (")
42
1.5 kW
0.4
Rp 1¼
6091313
Sub TWI 4.01-42-D (3~400 V, 50 Hz)
4 in (")
42
1.5 kW
0.4
Rp 1¼
6091312
Sub TWI 4.02-09-D (1~230 V, 50 Hz)
4 in (")
9
0.55 kW
0.4
Rp 1¼
6091315
Sub TWI 4.02-09-D (3~400 V, 50 Hz)
4 in (")
9
0.55 kW
0.7
Rp 1¼
6091314
Sub TWI 4.02-13-D (1~230 V, 50 Hz)
4 in (")
13
0.75 kW
0.7
Rp 1¼
6091317
Sub TWI 4.02-13-D (3~400 V, 50 Hz)
4 in (")
13
0.75 kW
0.7
Rp 1¼
6091316
Sub TWI 4.02-18-D (1~230 V, 50 Hz)
4 in (")
18
1.1 kW
0.7
Rp 1¼
6091319
Sub TWI 4.02-18-D (3~400 V, 50 Hz)
4 in (")
18
1.1 kW
0.7
Rp 1¼
6091318
Sub TWI 4.02-23-D (1~230 V, 50 Hz)
4 in (")
23
1.1 kW
0.7
Rp 1¼
6091321
Sub TWI 4.02-23-D (3~400 V, 50 Hz)
4 in (")
23
1.1 kW
0.7
Rp 1¼
6091320
Sub TWI 4.02-28-D (1~230 V, 50 Hz)
4 in (")
28
1.5 kW
0.7
Rp 1¼
6091323
Sub TWI 4.02-28-D (3~400 V, 50 Hz)
4 in (")
28
1.5 kW
0.7
Rp 1¼
6091322
Sub TWI 4.02-33-D (1~230 V, 50 Hz)
4 in (")
33
1.5 kW
0.7
Rp 1¼
6091325
Sub TWI 4.02-33-D (3~400 V, 50 Hz)
4 in (")
33
1.5 kW
0.7
Rp 1¼
6091324
Sub TWI 4.02-40-D (1~230 V, 50 Hz)
4 in (")
40
2.2 kW
0.7
Rp 1¼
6091327
Sub TWI 4.02-40-D (3~400 V, 50 Hz)
4 in (")
40
2.2 kW
0.7
Rp 1¼
6091326
Sub TWI 4.02-48-D (1~230 V, 50 Hz)
4 in (")
48
2.2 kW
0.7
Rp 1¼
6091329
Sub TWI 4.02-48-D (3~400 V, 50 Hz)
4 in (")
48
2.2 kW
0.7
Rp 1¼
6091328
Sub TWI 4.03-06-D (1~230 V, 50 Hz)
4 in (")
6
0.55 kW
0.7
Rp 1¼
6091331
Sub TWI 4.03-06-D (3~400 V, 50 Hz)
4 in (")
6
0.55 kW
0.7
Rp 1¼
6091330
Sub TWI 4.03-09-D (1~230 V, 50 Hz)
4 in (")
9
0.75 kW
0.7
Rp 1¼
6091333
Sub TWI 4.03-09-D (3~400 V, 50 Hz)
4 in (")
9
0.75 kW
0.7
Rp 1¼
6091332
Sub TWI 4.03-12-D (1~230 V, 50 Hz)
4 in (")
12
1.1 kW
0.7
Rp 1¼
6091335
Sub TWI 4.03-12-D (3~400 V, 50 Hz)
4 in (")
12
1.1 kW
0.7
Rp 1¼
6091334
Sub TWI 4.03-15-D (1~230 V, 50 Hz)
4 in (")
15
1.1 kW
0.7
Rp 1¼
6091337
Sub TWI 4.03-15-D (3~400 V, 50 Hz)
4 in (")
15
1.1 kW
0.7
Rp 1¼
6091336
Sub TWI 4.03-18-D (1~230 V, 50 Hz)
4 in (")
18
1.5 kW
0.7
Rp 1¼
6091339
Sub TWI 4.03-18-D (3~400 V, 50 Hz)
4 in (")
18
1.5 kW
0.7
Rp 1¼
6091338
Sub TWI 4.03-22-CI (1~230 V, 50 Hz)
4 in (")
22
1.5 kW
0.7
Rp 1¼
6079220
Sub TWI 4.03-22-D (1~230 V, 50 Hz)
4 in (")
22
1.5 kW
0.7
Rp 1¼
6091341
Sub TWI 4.03-22-D (3~400 V, 50 Hz)
4 in (")
22
1.5 kW
0.7
Rp 1¼
6091340
Sub TWI 4.03-25-D (1~230 V, 50 Hz)
4 in (")
25
2.2 kW
0.7
Rp 1¼
6091343
Sub TWI 4.03-25-D (3~400 V, 50 Hz)
4 in (")
25
2.2 kW
0.7
Rp 1¼
6091342
Sub TWI 4.03-29-D (1~230 V, 50 Hz)
4 in (")
29
2.2 kW
0.7
Rp 1¼
6091345
Sub TWI 4.03-29-D (3~400 V, 50 Hz)
4 in (")
29
2.2 kW
0.7
Rp 1¼
6091344