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Wilo Sub TWI 6-inch multistage stainless steel submersible deep-well pump

Sub TWI 6.18-02-D、Sub TWI 6.18-04-D、Sub TWI 6.18-05-D、Sub TWI 6.18-06-D、Sub TWI 6.18-07-C、Sub TWI 6.18-10-C、Sub TWI 6.18-13-C、Sub TWI 6.18-17-C、Sub TWI 6.18-20-C、Sub TWI 6.18-20-C-SD、Sub TWI 6.18-22-C、Sub TWI 6.18-22-C-SD、Sub TWI 6.18-24-C、Sub TWI 6.18-24-C-SD、Sub TWI 6.18-27-C、Sub TWI 6.18-27-C-SD、Sub TWI 6.18-29-C、Sub TWI 6.18-29-C-SD、Sub TWI 6.18-31-C、Sub TWI 6.18-31-C-SD、Sub TWI 6.18-33-C、Sub TWI 6.18-33-C-SD、Sub TWI 6.18-36-C、Sub TWI 6.18-36-C-SD、Sub TWI 6.18-38-C、Sub TWI 6.18-38-C-SD

The Wilo-Sub TWI 6 sectional stainless steel submersible deep-well pump is specifically designed for deep-well water extraction and high-rise water supply.Constructed from 304 stainless steel,it offers both high strength and corrosion resistance,making it suitable for challenging water conditions.Its sectional structure ensures efficient,stable operation,while the multistage design delivers high-head performance and excellent energy efficiency
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
Individually configurable motors and materials ensure reliable operation in any application
Drinking water models feature ACS certification
High flexibility through a wide range of models (4, 6, 8, and 10 inches)
Flow rate range: 1 to 250 m³/h

Construction

Multistage 6" submersible pump suitable for vertical or horizontal installation

Applications

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

Irrigation systems
Sprinkling
Water supply
Pressure boosting
Groundwater drainage and lowering

Equipment/Functions

Integrated non-return valve
NEMA pressure connection

Model Code

Example:

Wilo-Sub TWI 6.18-04-C-SD

TWI

series

6

Hydraulic component diameter, unit: inches ["]

18

Rated volumetric flow rate [m³/h]

04

Number of hydraulic stages

C

Product Series

SD

Starting Method

None = Direct start
SD = Star-Delta start

Technical Data

Mains connection: 3~400 V, 50 Hz

Submerged operating mode: S1

Fluid temperature: 3 – 30 °C

Minimum motor flow velocity: 0.08 – 0.5 m/s (depending on motor)

Max. sand content: 50 g/m³

Max. starts per hour: 20/h

Max. submersion depth: 100 m or 350 m (depending on motor)

Protection class: IP68

Pressure connection: Rp 2½ – Rp 3

Materials

Hydraulic housing: 1.4301 (AISI 304)

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

Type

Submersible pump suitable for vertical or horizontal installation.

Hydraulic section

Multistage submersible pump featuring a strap-design construction, equipped with radial or semi-axial impellers, a built-in check valve, and a standard connection:

4" connection: NEMA standard
6" connection: NEMA connection

Discharge port with threaded flange and internal thread. All parts in contact with the medium are made of corrosion-resistant materials.

Motor

Three-phase AC motor suitable for direct-on-line or star-delta starting:

Encapsulated motor with resin-impregnated, enameled-wire windings and water-glycol fill.
Rewindable motor with PVC-insulated windings and water-glycol fill.

Motor bearings are self-lubricating.

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.

As-delivered condition

Hydraulic unit + motor ready for immediate installation
Drinking water-certified connection cable (4 m, 5 m, or 10 m)
Installation and operating instructions

Options

Hydraulic unit made of stainless steel 1.4401
Motor made of stainless steel 1.4401, 1.4408, or 1.4571
60 Hz version
Star-delta starting
Rewindable motor
Rewindable motor with drinking water filling
Pump configured for special specifications

Accessories

Cooling jacket
Pressure shroud
Diaphragm pressure vessel
Gate valve
Float switch
Pressure switch
Electrodes
Switchgear
Alarm device
Cast-resin kit
Connection cable

Parameters

model Voltage
(V)		 Flow rate
(m³/h)		 Head
(m)		 Power
(kW)		 Motor diameter (mm) caliber
Sub TWI 6.18-02-D 380V 14.7 8.3 0.55 95 Rp 2 1/2
Sub TWI 6.18-04-D 380V 15.4 16.72 1.5 95 Rp 2 1/2
Sub TWI 6.18-05-D 380V 15.6 32.67 2.2 95 Rp 2 1/2
Sub TWI 6.18-06-D 380V 15.9 40.71 3 95 Rp 2 1/2
Sub TWI 6.18-07-C 380V 15.8 48.65 3 95 Rp 2 1/2
Sub TWI 6.18-10-C 380V 16 82.91 3.7 98 Rp 2 1/2
Sub TWI 6.18-13-C 380V 15.8 108.7 5.5 137 Rp 2 1/2
Sub TWI 6.18-17-C 380V 16.2 143.4 7.5 137 Rp 2 1/2
Sub TWI 6.18-20-C 380V 15.5 167.7 9.3 137 Rp 2 1/2
Sub TWI 6.18-20-C-SD 380V 15.5 167.7 11 137 Rp 2 1/2
Sub TWI 6.18-22-C 380V 14.8 196.5 11 137 Rp 2 1/2
Sub TWI 6.18-22-C-SD 380V 14.8 196.5 15 137 Rp 2 1/2
Sub TWI 6.18-24-C 380V 16.2 196 15 137 Rp 2 1/2
Sub TWI 6.18-24-C-SD 380V 16.2 196 15 137 Rp 2 1/2
Sub TWI 6.18-27-C 380V 15.8 226.1 15 137 Rp 2 1/2
Sub TWI 6.18-27-C-SD 380V 15.8 226.1 15 137 Rp 2 1/2
Sub TWI 6.18-29-C 380V 16.2 242.7 18.5 137 Rp 2 1/2
Sub TWI 6.18-29-C-SD 380V 16.2 242.7 18.5 137 Rp 2 1/2
Sub TWI 6.18-31-C 380V 15.8 261.2 18.5 137 Rp 2 1/2
Sub TWI 6.18-31-C-SD 380V 15.8 261.2 18.5 137 Rp 2 1/2
Sub TWI 6.18-33-C 380V 15.3 284 18.5 137 Rp 2 1/2
Sub TWI 6.18-33-C-SD 380V 15.3 284 18.5 137 Rp 2 1/2
Sub TWI 6.18-36-C 380V 16.1 306.8 22 137 Rp 2 1/2
Sub TWI 6.18-36-C-SD 380V 16.1 306.8 22 137 Rp 2 1/2
Sub TWI 6.18-38-C 380V 15.8 318.7 22 137 Rp 2 1/2
Sub TWI 6.18-38-C-SD 380V 15.8 318.7 22 137 Rp 2 1/2
Sub TWI 6.18-40-C 380V 15.8 336.7 22 137 Rp 2 1/2
Sub TWI 6.18-40-C-SD 380V 15.8 336.7 22 137 Rp 2 1/2
Sub TWI 6.30-02-D 380V 28.5 15.45 2.2 95 Rp 3
Sub TWI 6.30-03-D 380V 28.3 23.09 3 95 Rp 3
Sub TWI 6.30-04-C 380V 28 30.55 3.7 98 Rp 3
Sub TWI 6.30-06-C 380V 28.3 48.09 5.5 98 Rp 3
Sub TWI 6.30-08-C 380V 27.8 63.08 7.5 137 Rp 3
Sub TWI 6.30-11-C 380V 28.5 87.58 11 137 Rp 3
Sub TWI 6.30-11-C-SD 380V 28.5 87.58 11 137 Rp 3
Sub TWI 6.30-13-C 380V 28.3 101.9 15 137 Rp 3
Sub TWI 6.30-13-C-SD 380V 28.3 101.9 15 137 Rp 3
Sub TWI 6.30-15-C 380V 29.2 118.8 15 137 Rp 3
Sub TWI 6.30-15-C-SD 380V 29.2 118.8 15 137 Rp 3
Sub TWI 6.30-17-C 380V 28.9 132.4 15 137 Rp 3
Sub TWI 6.30-17-C-SD 380V 28.9 132.4 15 137 Rp 3
Sub TWI 6.30-19-C 380V 29.1 144.5 18.5 137 Rp 3
Sub TWI 6.30-19-C-SD 380V 29.1 144.5 18.5 137 Rp 3
Sub TWI 6.30-21-C 380V 29.1 154.7 18.5 137 Rp 3
Sub TWI 6.30-21-C-SD 380V 29.1 154.7 18.5 137 Rp 3
Sub TWI 6.30-24-C 380V 28.7 188 22 137 Rp 3
Sub TWI 6.30-24-C-SD 380V 28.7 188 22 137 Rp 3
Sub TWI 6.30-26-C 380V 28.9 199.9 30 137 Rp 3
Sub TWI 6.30-26-C-SD 380V 28.9 199.9 30 137 Rp 3
Sub TWI 6.30-29-C 380V 28.9 240.7 30 137 Rp 3
Sub TWI 6.30-29-C-SD 380V 28.9 240.7 30 137 Rp 3
Sub TWI 6.30-32-C 380V 28.7 251.5 30 137 Rp 3
Sub TWI 6.30-32-C-SD 380V 28.7 251.5 30 137 Rp 3
Sub TWI 6.30-35-C 380V 29.3 276.5 30 137 Rp 3
Sub TWI 6.30-35-C-SD 380V 29.3 276.5 30 137 Rp 3
Sub TWI 6.50-02-D 380V 43.2 16.56 3 95 Rp 3
Sub TWI 6.50-03-C 380V 41.9 26.78 5.5 98 Rp 3
Sub TWI 6.50-05-C 380V 42.7 43.29 7.5 137 Rp 3
Sub TWI 6.50-07-C 380V 44.2 61.19 11 137 Rp 3
Sub TWI 6.50-07-C-SD 380V 44.2 61.19 11 137 Rp 3
Sub TWI 6.50-10-C 380V 44.8 85.88 15 137 Rp 3
Sub TWI 6.50-10-C-SD 380V 44.8 85.88 15 137 Rp 3
Sub TWI 6.50-12-C 380V 44.3 105.2 18.5 137 Rp 3
Sub TWI 6.50-12-C-SD 380V 44.3 105.2 18.5 137 Rp 3
Sub TWI 6.50-15-C 380V 44.9 130.8 22 137 Rp 3
Sub TWI 6.50-15-C-SD 380V 44.9 130.8 22 137 Rp 3
Sub TWI 6.50-17-C 380V 45.7 147.9 30 137 Rp 3
Sub TWI 6.50-17-C-SD 380V 45.7 147.9 30 137 Rp 3
Sub TWI 6.50-19-C 380V 45.3 166.5 30 137 Rp 3
Sub TWI 6.50-19-C-SD 380V 45.3 166.5 30 137 Rp 3
Sub TWI 6.50-22-C 380V 46.5 188 37 137 Rp 3
Sub TWI 6.50-22-C-SD 380V 46.5 188 37 137 Rp 3
Sub TWI 6.50-24-C 380V 47 204.6 37 137 Rp 3
Sub TWI 6.50-24-C-SD 380V 47 204.6 37 137 Rp 3
Sub TWI 6.60-02-C 380V 49.3 15.88 3.7 98 Rp 3
Sub TWI 6.60-03-C 380V 52.2 24.16 5.5 98 Rp 3
Sub TWI 6.60-04-C 380V 54.1 31.7 7.5 137 Rp 3
Sub TWI 6.60-06-C 380V 55.6 47.16 11 137 Rp 3
Sub TWI 6.60-06-C-SD 380V 55.6 47.16 11 137 Rp 3
Sub TWI 6.60-08-C 380V 56.9 64.37 15 137 Rp 3
Sub TWI 6.60-08-C-SD 380V 56.9 64.37 15 137 Rp 3
Sub TWI 6.60-10-C 380V 57.1 75.72 18.5 137 Rp 3
Sub TWI 6.60-10-C-SD 380V 57.1 75.72 18.5 137 Rp 3
Sub TWI 6.60-12-C 380V 58.4 95.49 22 137 Rp 3
Sub TWI 6.60-12-C-SD 380V 58.4 95.49 22 137 Rp 3
Sub TWI 6.60-14-C 380V 58.2 112.6 30 137 Rp 3
Sub TWI 6.60-14-C-SD 380V 58.2 112.6 30 137 Rp 3
Sub TWI 6.60-16-C 380V 53.1 135.7 30 137 Rp 3
Sub TWI 6.60-16-C-SD 380V 53.1 135.7 30 137 Rp 3
Sub TWI 6.60-18-C 380V 59 142.5 30 137 Rp 3
Sub TWI 6.60-18-C-SD 380V 59 142.5 30 137 Rp 3
Sub TWI 6.60-20-C 380V 58.5 157.6 37 137 Rp 3
Sub TWI 6.60-20-C-SD 380V 58.5 157.6 37 137 Rp 3

Size

Video Introduction

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