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

Your advantages

  • Long service life thanks to corrosion-resistant stainless steel, optionally available 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
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 of 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
  • Single-phase or three-phase AC motor
  • Hermetically sealed 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

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

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 system. Standard models are without mounted non-return valves. The maximum inlet pressure is 10 bar.

Delivery state

  • Hydraulics + motor completely assembled
  • 1.5/2.5 m connection cable drinking water approval (cross-section: 4 x 1.5 mm2)
  • Single-phase version including switchbox with capacitor and On/Off switch
  • Installation and operating instructions
Downloads

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 (Documents)

General overview 2019 International version

Article Number 2200591
Edition 2018
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (40 MB)

General overview 2021 International version

Edition 2020
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (10 MB)

Certification booklet

Wilo-EMU

Article Number 6080454
Edition 1702
Page format A4
Number of pages 8
PDF (417 KB)

Wilo-EMU D/DCH/K/KD/KM/NK/SCH / Wilo-Sub TWI/TWU / Wilo-Zetos K8

Article Number 6080455
Edition 1702
Page format A4
Number of pages 71
PDF (1 MB)

Wilo-EMU D/DCH/K/KM/SCH (w/o motor)#Wilo-Sub TWI/TWU (w/o motor)#Wilo-Actun ZETOS-K8 (w/o motor)#Wilo-Actun ZETOS-K10 (w/o motor)

Article Number 6080455
Edition 2021-06
Page format 209.9 x 297.0 mm
Number of pages 72
PDF (7 MB)

Certificate REACH (Documents)

REACH regulation

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

Certificate (Documents)

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 ØRated power P2Minimum efficiency index (MEI)ConnectionArticle number
Sub TWI 4.03-52-C (3~400 V, 50 Hz)
4 in
3.7 kW
0.7
Rp 1¼
6072926
Sub TWI 4.05-38-C (3~400 V, 50 Hz)
4 in
3.7 kW
0.4
Rp 1½
6072935
Sub TWI 4.05-44-C (3~400 V, 50 Hz)
4 in
4 kW
0.4
Rp 1½
6072936
Sub TWI 4.09-21-C (3~400 V, 50 Hz)
4 in
3.7 kW
0.4
Rp 2
6072943
Sub TWI 4.09-25-C (3~400 V, 50 Hz)
4 in
3.7 kW
0.4
Rp 2
6072944
Sub TWI 4.09-30-C (3~400 V, 50 Hz)
4 in
5.5 kW
0.4
Rp 2
6072945
Sub TWI 4.09-37-C (3~400 V, 50 Hz)
4 in
5.5 kW
0.4
Rp 2
6072946
Sub TWI 4.14-15-C (3~400 V, 50 Hz)
4 in
4 kW
0.4
Rp 2
6081548
Sub TWI 4.14-17-C (3~400 V, 50 Hz)
4 in
4 kW
0.4
Rp 2
6081549
Sub TWI 4.14-20-C (3~400 V, 50 Hz)
4 in
5.5 kW
0.4
Rp 2
6081550
Sub TWI 4.14-23-C (3~400 V, 50 Hz)
4 in
5.5 kW
0.4
Rp 2
6081551
Sub TWI 4.14-27-C (3~400 V, 50 Hz)
4 in
7.5 kW
0.4
Rp 2
6081552
Sub TWI 4.14-31-C (3~400 V, 50 Hz)
4 in
7.5 kW
0.4
Rp 2
6081553
Sub TWI 4.01-42-CI (1~230 V, 50 Hz)
4 in
1.5 kW
0.4
Rp 1¼
6079206
Sub TWI 4.01-21-CI (3~400 V, 50 Hz)
4 in
0.75 kW
0.4
Rp 1¼
6079241
Sub TWI 4.01-28-CI (3~400 V, 50 Hz)
4 in
1.1 kW
0.4
Rp 1¼
6079242
Sub TWI 4.03-22-CI (1~230 V, 50 Hz)
4 in
1.5 kW
0.7
Rp 1¼
6079220
Sub TWI 4.05-06-CI (1~230 V, 50 Hz)
4 in
0.55 kW
0.4
Rp 1½
6079225
Sub TWI 4.09-07-CI (1~230 V, 50 Hz)
4 in
1.1 kW
0.4
Rp 2
6079232
Sub TWI 4.14-06-CI (1~230 V, 50 Hz)
4 in
1.5 kW
0.4
Rp 2
6081541
Sub TWI 4.01-09-D (1~230 V, 50 Hz)
4 in
0.37 kW
0.4
Rp 1¼
6091301
Sub TWI 4.01-14-D (1~230 V, 50 Hz)
4 in
0.55 kW
0.4
Rp 1¼
6091303
Sub TWI 4.01-18-D (1~230 V, 50 Hz)
4 in
0.55 kW
0.4
Rp 1¼
6091305
Sub TWI 4.01-21-D (1~230 V, 50 Hz)
4 in
0.75 kW
0.4
Rp 1¼
6091307
Sub TWI 4.01-28-D (1~230 V, 50 Hz)
4 in
1.1 kW
0.4
Rp 1¼
6091309
Sub TWI 4.01-36-D (1~230 V, 50 Hz)
4 in
1.1 kW
0.4
Rp 1¼
6091311
Sub TWI 4.01-42-D (1~230 V, 50 Hz)
4 in
1.5 kW
0.4
Rp 1¼
6091313
Sub TWI 4.01-09-D (3~400 V, 50 Hz)
4 in
0.37 kW
0.4
Rp 1¼
6091300
Sub TWI 4.01-14-D (3~400 V, 50 Hz)
4 in
0.55 kW
0.4
Rp 1¼
6091302
Sub TWI 4.01-18-D (3~400 V, 50 Hz)
4 in
0.55 kW
0.4
Rp 1¼
6091304
Sub TWI 4.01-21-D (3~400 V, 50 Hz)
4 in
0.75 kW
0.4
Rp 1¼
6091306
Sub TWI 4.01-28-D (3~400 V, 50 Hz)
4 in
1.1 kW
0.4
Rp 1¼
6091308
Sub TWI 4.01-36-D (3~400 V, 50 Hz)
4 in
1.1 kW
0.4
Rp 1¼
6091310
Sub TWI 4.01-42-D (3~400 V, 50 Hz)
4 in
1.5 kW
0.4
Rp 1¼
6091312
Sub TWI 4.02-09-D (1~230 V, 50 Hz)
4 in
0.55 kW
0.4
Rp 1¼
6091315
Sub TWI 4.02-13-D (1~230 V, 50 Hz)
4 in
0.75 kW
0.7
Rp 1¼
6091317
Sub TWI 4.02-18-D (1~230 V, 50 Hz)
4 in
1.1 kW
0.7
Rp 1¼
6091319
Sub TWI 4.02-23-D (1~230 V, 50 Hz)
4 in
1.1 kW
0.7
Rp 1¼
6091321
Sub TWI 4.02-28-D (1~230 V, 50 Hz)
4 in
1.5 kW
0.7
Rp 1¼
6091323
Sub TWI 4.02-33-D (1~230 V, 50 Hz)
4 in
1.5 kW
0.7
Rp 1¼
6091325
Sub TWI 4.02-40-D (1~230 V, 50 Hz)
4 in
2.2 kW
0.7
Rp 1¼
6091327
Sub TWI 4.02-48-D (1~230 V, 50 Hz)
4 in
2.2 kW
0.7
Rp 1¼
6091329
Sub TWI 4.02-09-D (3~400 V, 50 Hz)
4 in
0.55 kW
0.7
Rp 1¼
6091314
Sub TWI 4.02-13-D (3~400 V, 50 Hz)
4 in
0.75 kW
0.7
Rp 1¼
6091316
Sub TWI 4.02-18-D (3~400 V, 50 Hz)
4 in
1.1 kW
0.7
Rp 1¼
6091318
Sub TWI 4.02-23-D (3~400 V, 50 Hz)
4 in
1.1 kW
0.7
Rp 1¼
6091320
Sub TWI 4.02-28-D (3~400 V, 50 Hz)
4 in
1.5 kW
0.7
Rp 1¼
6091322
Sub TWI 4.02-33-D (3~400 V, 50 Hz)
4 in
1.5 kW
0.7
Rp 1¼
6091324
Sub TWI 4.02-40-D (3~400 V, 50 Hz)
4 in
2.2 kW
0.7
Rp 1¼
6091326
Sub TWI 4.02-48-D (3~400 V, 50 Hz)
4 in
2.2 kW
0.7
Rp 1¼
6091328