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Wilo Sub TWI 4-inch multistage stainless steel submersible deep-well pump

Sub TWI 4.01-09-DM-D、Sub TWI 4.01-09-EM-D、Sub TWI 4.01-14-DM-D、Sub TWI 4.01-14-EM-D、Sub TWI 4.01-18-DM-D、Sub TWI 4.01-18-EM-D、Sub TWI 4.01-21-DM-D、Sub TWI 4.01-21-EM-D、Sub TWI 4.01-28-DM-D、Sub TWI 4.01-28-EM-D、Sub TWI 4.01-36-DM-D、Sub TWI 4.01-36-EM-D、Sub TWI 4.01-42-DM-D、Sub TWI 4.01-42-EM-D、Sub TWI 4.02-09-DM-D、Sub TWI 4.02-09-EM-D、Sub TWI 4.02-13-DM-D、Sub TWI 4.02-13-EM-D、Sub TWI 4.02-18-DM-D、Sub TWI 4.02-18-EM-D、Sub TWI 4.02-23-DM-D、Sub TWI 4.02-23-EM-D

The Wilo-Sub TWI series is a high-performance,4-inch multistage stainless steel submersible deep-well pump engineered for demanding deep-well environments.Constructed entirely from 304 stainless steel,it offers exceptional corrosion resistance and structural integrity,ensuring a longer service life and stable operation in deep-well applications.Featuring a standard 4-inch diameter,the pump delivers high head,high flow rates,
Product Consultation By telephone
Function
Parameters
Size
Video Introduction

Function

Features/Product Advantages

Corrosion-resistant stainless steel ensures a long service life; V4A grade available as an option
ACS certified for drinking water
High flexibility with models suitable for 4, 6, 8, and 10-inch applications
Wide performance range: 1 to 250 m³/h

Eco-friendly attributes

Durable stainless steel pump construction; easy maintenance and repair; long service life
Highly efficient hydraulics

Construction

Multistage 4" submersible pump (can be installed vertically or horizontally)

Applications

Pumping drinking water (ACS and RI.SE certified), rainwater, and industrial water from wells and reservoirs (sand content < 50 g/m³) for:

Irrigation systems
Sprinkling
Water supply
Pressure boosting
Groundwater drainage and lowering

Equipment/Functions

Integrated non-return valve
NEMA pressure connection
Single-phase AC motor with capacitor box containing an integrated thermal motor protector

Model Code

Example:

Wilo-Sub TWI 4.01-09-C

TWI

series

4

Hydraulic component diameter, unit: inches ["]

01

Rated volumetric flow rate [m³/h]

09

Number of hydraulic stages

C

Product Series

Technical Data

Power connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
Operation mode (submerged): S1
Fluid temperature: 3 – 30 °C
Minimum flow velocity at motor: 0.1 m/s
Max. sand content: 50 g/m³
Max. starts per hour: 20/h
Max. immersion depth: 150 m
Protection class: IP68
Pressure connection: Rp 1¼ – Rp 2

Materials

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

Type

Submersible pump suitable for vertical or horizontal installation.

Hydraulics

Multistage submersible pump with a strap-design casing, featuring radial or semi-axial impellers, a built-in check valve, and a standard 4" NEMA connection. Discharge port with threaded flange and internal thread. All parts in contact with the medium are made of corrosion-resistant materials.

Motor

Single-phase or three-phase AC motor for direct-on-line starting. Sealed motor featuring resin-impregnated windings, a water-glycol fill, and self-lubricating motor bearings.

Cooling

The motor is cooled by the pumped fluid. The pump must operate fully submerged.
Vertical installation is possible with or without a cooling shroud.
Horizontal installation requires the use of a cooling shroud.

Scope of delivery

Hydraulics + motor, ready for installation
Power cable (1.5 m or 2.5 m) certified for drinking water applications
AC models include a control box with a built-in capacitor and On/Off switch
Installation and operating instructions

Options

Hydraulics made of stainless steel 1.4401
Motor made of stainless steel 1.4401
60 Hz models

Accessories

Cooling shroud
Diaphragm pressure vessel
Gate valve
Float switch
Pressure switch
Electrodes
Switchgear
Alarm unit
Resin casting kit
Power cable

Parameters

model Voltage
(V)		 Flow rate
(m³/h)		 Head
(m)		 Power
(kW)		 Motor diameter (mm) caliber
Sub TWI 4.01-09-DM-D 380V 0.9 37.17 0.37 95 Rp 1 1/4
Sub TWI 4.01-09-EM-D 220V 0.9 37.17 0.37 98 Rp 1 1/4
Sub TWI 4.01-14-DM-D 380V 0.7 61.67 0.55 98 Rp 1 1/4
Sub TWI 4.01-14-EM-D 220V 0.7 61.67 0.55 98 Rp 1 1/4
Sub TWI 4.01-18-DM-D 380V 0.9 72.56 0.55 95 Rp 1 1/4
Sub TWI 4.01-18-EM-D 220V 0.9 72.56 0.55 98 Rp 1 1/4
Sub TWI 4.01-21-DM-D 380V 0.9 80.8 0.75 95 Rp 1 1/4
Sub TWI 4.01-21-EM-D 220V 0.9 80.8 0.75 98 Rp 1 1/4
Sub TWI 4.01-28-DM-D 380V 0.9 110.6 1.1 95 Rp 1 1/4
Sub TWI 4.01-28-EM-D 220V 0.9 110.6 1.1 98 Rp 1 1/4
Sub TWI 4.01-36-DM-D 380V 1 143.6 1.1 95 Rp 1 1/4
Sub TWI 4.01-36-EM-D 220V 1 143.6 1.1 98 Rp 1 1/4
Sub TWI 4.01-42-DM-D 380V 0.9 179.7 1.5 95 Rp 1 1/4
Sub TWI 4.01-42-EM-D 220V 0.9 179.7 1.5 98 Rp 1 1/4
Sub TWI 4.02-09-DM-D 380V 1.5 42.17 0.55 95 Rp 1 1/4
Sub TWI 4.02-09-EM-D 220V 1.5 42.17 0.55 98 Rp 1 1/4
Sub TWI 4.02-13-DM-D 380V 1.9 51.69 0.75 95 Rp 1 1/4
Sub TWI 4.02-13-EM-D 220V 1.9 51.69 0.75 98 Rp 1 1/4
Sub TWI 4.02-18-DM-D 380V 1.7 73.88 1.1 95 Rp 1 1/4
Sub TWI 4.02-18-EM-D 220V 1.7 73.88 1.1 98 Rp 1 1/4
Sub TWI 4.02-23-DM-D 380V 1.9 94.79 1.1 95 Rp 1 1/4
Sub TWI 4.02-23-EM-D 220V 1.9 94.79 1.1 98 Rp 1 1/4
Sub TWI 4.02-28-DM-D 380V 1.9 116.2 1.5 95 Rp 1 1/4
Sub TWI 4.02-28-EM-D 220V 1.9 116.2 1.5 98 Rp 1 1/4
Sub TWI 4.02-33-DM-D 380V 2 134.2 1.5 95 Rp 1 1/4
Sub TWI 4.02-33-EM-D 220V 2 134.1 1.5 98 Rp 1 1/4
Sub TWI 4.02-40-DM-D 380V 1.9 160.3 2.2 95 Rp 1 1/4
Sub TWI 4.02-40-EM-D 220V 1.9 160.3 2.2 98 Rp 1 1/4
Sub TWI 4.02-48-DM-D 380V 1.8 199.4 2.2 95 Rp 1 1/4
Sub TWI 4.02-48-EM-D 220V 1.8 199.4 2.2 98 Rp 1 1/4
Sub TWI 4.03-06-DM-D 380V 2.4 29.5 0.55 95 Rp 1 1/4
Sub TWI 4.03-06-EM-D 220V 2.4 29.5 0.55 98 Rp 1 1/4
Sub TWI 4.03-09-DM-D 380V 2.8 40.32 0.75 95 Rp 1 1/4
Sub TWI 4.03-09-EM-D 220V 2.8 40.32 0.75 98 Rp 1 1/4
Sub TWI 4.03-12-DM-D 380V 3 52.3 1.1 95 Rp 1 1/4
Sub TWI 4.03-12-EM-D 220V 3 52.3 1.1 98 Rp 1 1/4
Sub TWI 4.03-15-DM-D 380V 3 69.65 1.1 95 Rp 1 1/4
Sub TWI 4.03-15-EM-D 220V 3 69.65 1.1 98 Rp 1 1/4
Sub TWI 4.03-18-DM-D 380V 3 81.02 1.5 95 Rp 1 1/4
Sub TWI 4.03-18-EM-D 220V 3 81.02 1.5 98 Rp 1 1/4
Sub TWI 4.03-22-DM-D 380V 3 98.34 1.5 95 Rp 1 1/4
Sub TWI 4.03-22-EM-D 220V 3 98.34 1.5 98 Rp 1 1/4
Sub TWI 4.03-25-DM-D 380V 3 109.6 2.2 95 Rp 1 1/4
Sub TWI 4.03-25-EM-D 220V 3 109.6 2.2 98 Rp 1 1/4
Sub TWI 4.03-29-DM-D 380V 3.2 122.5 2.2 95 Rp 1 1/4
Sub TWI 4.03-29-EM-D 220V 3.2 122.5 2.2 98 Rp 1 1/4
Sub TWI 4.03-33-DM-D 380V 3 145.4 2.2 98 Rp 1 1/4
Sub TWI 4.03-33-EM-D 220V 3 145 2.2 98 Rp 1 1/4
Sub TWI 4.03-39-DM-D 380V 3 175 3 98 Rp 1 1/4
Sub TWI 4.03-45-DM-D 380V 2.9 198 3 98 Rp 1 1/4
Sub TWI 4.03-52-DM-C 380V 3.1 225 3.7 98 Rp 1 1/4
Sub TWI 4.05-04-DM-D 380V 4 18 0.55 98 Rp 1 1/2
Sub TWI 4.05-04-EM-D 220V 4 18 0.55 98 Rp 1 1/2
Sub TWI 4.05-06-DM-D 380V 4.2 26 0.55 98 Rp 1 1/2
Sub TWI 4.05-06-EM-D 220V 4.2 26 0.55 98 Rp 1 1/2
Sub TWI 4.05-08-DM-D 380V 4.7 33 0.75 98 Rp 1 1/2
Sub TWI 4.05-08-EM-D 220V 4.7 33 0.75 98 Rp 1 1/2
Sub TWI 4.05-12-DM-D 380V 4.9 50 1.5 95 Rp 1 1/2
Sub TWI 4.05-12-EM-D 220V 4.9 50 1.5 98 Rp 1 1/2
Sub TWI 4.05-17-DM-D 380V 5 68 2.2 98 Rp 1 1/2
Sub TWI 4.05-17-EM-D 220V 5 68 2.2 98 Rp 1 1/2
Sub TWI 4.05-21-DM-D 380V 5.4 78 2.2 98 Rp 1 1/2
Sub TWI 4.05-21-EM-D 220V 5.5 77 2.2 98 Rp 1 1/2
Sub TWI 4.05-25-DM-D 380V 5.4 91 2.2 98 Rp 1 1/2
Sub TWI 4.05-25-EM-D 220V 5.4 91 2.2 98 Rp 1 1/2
Sub TWI 4.05-33-DM-D 380V 5.3 125 3 98 Rp 1 1/2
Sub TWI 4.05-38-DM-C 380V 5.7 138 3.7 98 Rp 1 1/2
Sub TWI 4.05-44-DM-C 380V 5.6 160 4 98 Rp 1 1/2
Sub TWI 4.09-05-DM-D 380V 7.9 20 1.1 98 Rp 2
Sub TWI 4.09-05-EM-D 220V 7.9 20 1.1 98 Rp 2
Sub TWI 4.09-07-DM-D 380V 8.3 29 1.1 98 Rp 2
Sub TWI 4.09-07-EM-D 220V 8.3 29 1.1 98 Rp 2
Sub TWI 4.09-10-DM-D 380V 8.3 39 1.5 98 Rp 2
Sub TWI 4.09-10-EM-D 220V 8.3 39 1.5 98 Rp 2
Sub TWI 4.09-12-DM-D 380V 8.4 46 2.2 98 Rp 2
Sub TWI 4.09-12-EM-D 220V 8.5 46 2.2 98 Rp 2
Sub TWI 4.09-15-DM-D 380V 8.5 57 2.2 98 Rp 2
Sub TWI 4.09-15-EM-D 220V 8.5 57 2.2 98 Rp 2
Sub TWI 4.09-18-DM-D 380V 8.7 70 3 98 Rp 2
Sub TWI 4.09-21-DM-C 380V 8.6 82 3.7 98 Rp 2
Sub TWI 4.09-25-DM-C 380V 8.5 96 3.7 98 Rp 2
Sub TWI 4.09-30-DM-C 380V 9 120 5.5 98 Rp 2
Sub TWI 4.09-37-DM-C 380V 8.6 142 5.5 98 Rp 2
Sub TWI 4.14-04-DM-D 380V 13.8 16.8 1.1 98 Rp 2
Sub TWI 4.14-04-EM-D 220V 13.8 16.8 1.1 98 Rp 2
Sub TWI 4.14-06-DM-D 380V 13.8 25.28 1.5 95 Rp 2
Sub TWI 4.14-06-EM-D 220V 13.8 25.28 1.5 98 Rp 2
Sub TWI 4.14-08-DM-D 380V 13.8 33.71 2.2 95 Rp 2
Sub TWI 4.14-08-EM-D 220V 13.8 33.71 2.2 98 Rp 2
Sub TWI 4.14-11-DM-D 380V 13.8 46.34 3 95 Rp 2
Sub TWI 4.14-13-DM-D 380V 13.8 54.7 3 95 Rp 2
Sub TWI 4.14-15-DM-C 380V 13.8 63.2 4 98 Rp 2
Sub TWI 4.14-17-DM-C 380V 13.8 71.67 4 98 Rp 2
Sub TWI 4.14-20-DM-C 380V 13.8 87.43 5.5 98 Rp 2
Sub TWI 4.14-23-DM-C 380V 13.8 99.29 5.5 98 Rp 2
Sub TWI 4.14-27-DM-C 380V 13.8 118.2 7.5 98 Rp 2
Sub TWI 4.14-31-DM-C 380V 13.8 134.1 7.5 98 Rp 2

Size

Video Introduction

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