Sub TWI 4 | Submersible pump | Wilo

Sub TWI 4

Submersible pump

The reliable and corrosion-resistant multistage 4″ submersible pump.

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

Wilo-TWI 4

Number of results: [97]

Mains connection

1~230 V, 50 Hz [39]

3~400 V, 50 Hz [58]

Rated power P₂

[0]

Product description	Mains connection	Motor diameter Ø	Number of stages	Rated power P₂	Minimum efficiency index (MEI)	Connection	Article number
Sub TWI 4.01-09-DM-D	3~400 V, 50 Hz	4 in (")	9	0.37 kW	0.4	Rp 1¼	6091300
Sub TWI 4.01-09-EM-D	1~230 V, 50 Hz	4 in (")	9	0.37 kW	0.4	Rp 1¼	6091301
Sub TWI 4.01-14-DM-D	3~400 V, 50 Hz	4 in (")	14	0.55 kW	0.4	Rp 1¼	6091302
Sub TWI 4.01-14-EM-D	1~230 V, 50 Hz	4 in (")	14	0.55 kW	0.4	Rp 1¼	6091303
Sub TWI 4.01-18-DM-D	3~400 V, 50 Hz	4 in (")	18	0.55 kW	0.4	Rp 1¼	6091304
Sub TWI 4.01-18-EM-D	1~230 V, 50 Hz	4 in (")	18	0.55 kW	0.4	Rp 1¼	6091305
Sub TWI 4.01-21-DM-D	3~400 V, 50 Hz	4 in (")	21	0.75 kW	0.4	Rp 1¼	6091306
Sub TWI 4.01-21-EM-D	1~230 V, 50 Hz	4 in (")	21	0.75 kW	0.4	Rp 1¼	6091307
Sub TWI 4.01-28-DM-D	3~400 V, 50 Hz	4 in (")	28	1.1 kW	0.4	Rp 1¼	6091308
Sub TWI 4.01-28-EM-D	1~230 V, 50 Hz	4 in (")	28	1.1 kW	0.4	Rp 1¼	6091309
Sub TWI 4.01-36-DM-D	3~400 V, 50 Hz	4 in (")	36	1.1 kW	0.4	Rp 1¼	6091310
Sub TWI 4.01-36-EM-D	1~230 V, 50 Hz	4 in (")	36	1.1 kW	0.4	Rp 1¼	6091311
Sub TWI 4.01-42-DM-D	3~400 V, 50 Hz	4 in (")	42	1.5 kW	0.4	Rp 1¼	6091312
Sub TWI 4.01-42-EM-D	1~230 V, 50 Hz	4 in (")	42	1.5 kW	0.4	Rp 1¼	6091313
Sub TWI 4.02-09-DM-D	3~400 V, 50 Hz	4 in (")	9	0.55 kW	0.7	Rp 1¼	6091314
Sub TWI 4.02-09-EM-D	1~230 V, 50 Hz	4 in (")	9	0.55 kW	0.4	Rp 1¼	6091315
Sub TWI 4.02-13-DM-D	3~400 V, 50 Hz	4 in (")	13	0.75 kW	0.7	Rp 1¼	6091316
Sub TWI 4.02-13-EM-D	1~230 V, 50 Hz	4 in (")	13	0.75 kW	0.7	Rp 1¼	6091317
Sub TWI 4.02-18-DM-D	3~400 V, 50 Hz	4 in (")	18	1.1 kW	0.7	Rp 1¼	6091318
Sub TWI 4.02-18-EM-D	1~230 V, 50 Hz	4 in (")	18	1.1 kW	0.7	Rp 1¼	6091319
Sub TWI 4.02-23-DM-D	3~400 V, 50 Hz	4 in (")	23	1.1 kW	0.7	Rp 1¼	6091320
Sub TWI 4.02-23-EM-D	1~230 V, 50 Hz	4 in (")	23	1.1 kW	0.7	Rp 1¼	6091321
Sub TWI 4.02-28-DM-D	3~400 V, 50 Hz	4 in (")	28	1.5 kW	0.7	Rp 1¼	6091322
Sub TWI 4.02-28-EM-D	1~230 V, 50 Hz	4 in (")	28	1.5 kW	0.7	Rp 1¼	6091323
Sub TWI 4.02-33-DM-D	3~400 V, 50 Hz	4 in (")	33	1.5 kW	0.7	Rp 1¼	6091324
Sub TWI 4.02-33-EM-D	1~230 V, 50 Hz	4 in (")	33	1.5 kW	0.7	Rp 1¼	6091325
Sub TWI 4.02-40-DM-D	3~400 V, 50 Hz	4 in (")	40	2.2 kW	0.7	Rp 1¼	6091326
Sub TWI 4.02-40-EM-D	1~230 V, 50 Hz	4 in (")	40	2.2 kW	0.7	Rp 1¼	6091327
Sub TWI 4.02-48-DM-D	3~400 V, 50 Hz	4 in (")	48	2.2 kW	0.7	Rp 1¼	6091328
Sub TWI 4.02-48-EM-D	1~230 V, 50 Hz	4 in (")	48	2.2 kW	0.7	Rp 1¼	6091329
Sub TWI 4.03-06-DM-D	3~400 V, 50 Hz	4 in (")	6	0.55 kW	0.7	Rp 1¼	6091330
Sub TWI 4.03-06-EM-D	1~230 V, 50 Hz	4 in (")	6	0.55 kW	0.7	Rp 1¼	6091331
Sub TWI 4.03-09-DM-D	3~400 V, 50 Hz	4 in (")	9	0.75 kW	0.7	Rp 1¼	6091332
Sub TWI 4.03-09-EM-D	1~230 V, 50 Hz	4 in (")	9	0.75 kW	0.7	Rp 1¼	6091333
Sub TWI 4.03-12-DM-D	3~400 V, 50 Hz	4 in (")	12	1.1 kW	0.7	Rp 1¼	6091334
Sub TWI 4.03-12-EM-D	1~230 V, 50 Hz	4 in (")	12	1.1 kW	0.7	Rp 1¼	6091335
Sub TWI 4.03-15-DM-D	3~400 V, 50 Hz	4 in (")	15	1.1 kW	0.7	Rp 1¼	6091336
Sub TWI 4.03-15-EM-D	1~230 V, 50 Hz	4 in (")	15	1.1 kW	0.7	Rp 1¼	6091337
Sub TWI 4.03-18-DM-D	3~400 V, 50 Hz	4 in (")	18	1.5 kW	0.7	Rp 1¼	6091338
Sub TWI 4.03-18-EM-D	1~230 V, 50 Hz	4 in (")	18	1.5 kW	0.7	Rp 1¼	6091339

Sub TWI 4, (3~400 V)

Design

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

Application

Designed for pumping drinking water (in accordance with ACS and RI.SE), rainwater and process water with up to 50 g/m³ sand content from wells and rainwater storage tanks for the following applications:

Irrigation
Sprinkling
Water supply
Pressure boosting
Ground water drainage and lowering

Equipment/function

Integrated non-return valve
Discharge port according to NEMA
Single-phase current motor with capacitor box with thermal motor protection

Type key

Example:	Wilo-Sub TWI 4.01-09-C
TWI	Series
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
IP rating: IP68
Discharge port: Rp 1¼ – Rp 2

Materials

Hydraulics housing: 1.4301 (AISI 304)
Impellers: 1.4301 (AISI 304)
Hydraulic shaft: 1.4057 (AISI 431)
Motor housing: 1.4301 (AISI 304)
Motor shaft: 1.4305 (AISI 303)

Construction

Hydraulics

Tie strap version of the multistage submersible pump with radial or semi-axial impellers, integrated non-return valve, and a standardised 4" NEMA connection. Discharge port with threaded flange and female thread. All parts that come in contact with the fluid are made of corrosion-free materials.

Motor

Single-phase or three-phase current motor for direct starting. Sealed motor with lacquer-insulated, resin-covered winding, water-glycol filling and self-lubricating motor bearings.

Cooling

The motor is cooled by the pumped fluid. Always operate the pump in a submerged state.
Vertical installation is possible with or without cooling jacket.
Horizontal installation must be performed in conjunction with a cooling jacket.

Scope of delivery

Hydraulics + motor completely assembled
1.5 m or 2.5 m connection cable with drinking water approval
AC version including switchbox with capacitor and on/off switch
Installation and operating instructions

Options

Hydraulics in 1.4401 (AISI 316)
Motor in 1.4401 (AISI 316)
Pressure shroud version for the direct installation of the pump in the pipe system (max. inlet pressure: 10 bar)
Custom-made

Accessories

Cooling shroud
Diaphragm expansion tank
Gate valve
Float switch
Pressure switch
Electrode
Switchgear
Alarm switchgear
Casting resin kit
Connection cable