Wilo-Sub TWI 8

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Overview

Long service life due to the use of corrosion-resistant stainless steel, optional V4A steel
Individual configuration of motors and materials for reliable operation in any application
Drinking water versions with ACS approval
High versatility with 4, 6, 8, and 10 in.
Flow range from 1 to 250 m³/h

Type
8" multi-section submersible pump in tie-bar version for vertical or horizontal installation

Application

Water supply, e.g. drinking water from wells and cisterns
Supply of service water
Use in public water supply systems, for irrigation and watering
Pressure boosting
Water level lowering
Pumping water for industrial use
Pumping water without long fibrous and abrasive impurities

Equipment/function

Multistage submersible motor pump with semi-axial impellers
Built-in check valve
NEMA compliant clutch
Three phase electric motor
Sealed motors
Rewindable motors

Scope of delivery

Complete hydraulic section with motor
4/8/10 m power cable with drinking water approval (cross section: 4x2.5 mm2 or 4x4 mm2 or separate conductor)
Installation and operating instructions

Model overview

Products

Show

Product designation	Motor connection	Motor diameter DM	Motor head, H_max	Run rate max. Q_max	Nominal motor powerP₂	gross weight approx. m	Article number
Sub TWI 8.80-01-C	3~400 V, 50 Hz	137 mm	19.6 m	118.8 m³/h	4.00 kW	88.0 kg	6075400
Sub TWI 8.80-02-C-SD	3~400 V, 50 Hz	137 mm	37.4 m	118.8 m³/h	7.50 kW	99.0 kg	6075401
Sub TWI 8.80-03-C-SD	3~400 V, 50 Hz	137 mm	52.9 m	118.8 m³/h	11.00 kW	112.0 kg	6075402
Sub TWI 8.80-04-C-SD	3~400 V, 50 Hz	137 mm	75.7 m	118.8 m³/h	15.00 kW	124.0 kg	6075403
Sub TWI 8.80-05-C-SD	3~400 V, 50 Hz	137 mm	94.1 m	118.8 m³/h	18.50 kW	139.0 kg	6075404
Sub TWI 8.80-06-C-SD	3~400 V, 50 Hz	137 mm	113.3 m	118.8 m³/h	22.00 kW	153.0 kg	6075405
Sub TWI 8.80-07-C-SD	3~400 V, 50 Hz	137 mm	135.0 m	118.8 m³/h	30.00 kW	171.0 kg	6075406
Sub TWI 8.80-08-C-SD	3~400 V, 50 Hz	137 mm	145.6 m	118.8 m³/h	30.00 kW	184.0 kg	6075407
Sub TWI 8.80-09-C-SD	3~400 V, 50 Hz	137 mm	164.9 m	118.8 m³/h	30.00 kW	187.0 kg	6075408
Sub TWI 8.80-10-C-SD	3~400 V, 50 Hz	137 mm	181.1 m	118.8 m³/h	37.00 kW	232.0 kg	6075409
Sub TWI 8.80-11-C-SD	3~400 V, 50 Hz	137 mm	204.2 m	118.8 m³/h	45.00 kW	255.0 kg	6075410
Sub TWI 8.80-12-C-SD	3~400 V, 50 Hz	191 mm	230.3 m	118.8 m³/h	55.00 kW	297.0 kg	6075411
Sub TWI 8.80-15-C-SD	3~400 V, 50 Hz	191 mm	286.8 m	118.8 m³/h	75.00 kW	355.0 kg	6075412
Sub TWI 8.80-16-C-SD	3~400 V, 50 Hz	191 mm	307.5 m	118.8 m³/h	75.00 kW	359.0 kg	6075413
Sub TWI 8.80-18-C-SD	3~400 V, 50 Hz	191 mm	359.1 m	118.8 m³/h	75.00 kW	370.0 kg	6075414
Sub TWI 8.80-20-C-SD	3~400 V, 50 Hz	191 mm	404.0 m	118.8 m³/h	75.00 kW	393.0 kg	6075415
Sub TWI 8.90-01-C-SD	3~400 V, 50 Hz	137 mm	20.8 m	136.8 m³/h	5.50 kW	92.0 kg	6075416
Sub TWI 8.90-02-C-SD	3~400 V, 50 Hz	137 mm	41.3 m	136.8 m³/h	11.00 kW	105.0 kg	6075417
Sub TWI 8.90-03-C-SD	3~400 V, 50 Hz	137 mm	61.7 m	136.8 m³/h	15.00 kW	121.0 kg	6075418
Sub TWI 8.90-04-C-SD	3~400 V, 50 Hz	137 mm	81.0 m	136.8 m³/h	18.50 kW	146.0 kg	6075419
Sub TWI 8.90-05-C-SD	3~400 V, 50 Hz	137 mm	103.4 m	136.8 m³/h	22.00 kW	145.0 kg	6075420
Sub TWI 8.90-06-C-SD	3~400 V, 50 Hz	137 mm	125.2 m	136.8 m³/h	30.00 kW	187.0 kg	6075421
Sub TWI 8.90-07-C-SD	3~400 V, 50 Hz	137 mm	143.5 m	136.8 m³/h	37.00 kW	215.0 kg	6075422
Sub TWI 8.90-08-C-SD	3~400 V, 50 Hz	137 mm	166.6 m	136.8 m³/h	37.00 kW	225.0 kg	6075423
Sub TWI 8.90-09-C-SD	3~400 V, 50 Hz	137 mm	183.7 m	136.8 m³/h	45.00 kW	244.0 kg	6075424
Sub TWI 8.90-10-C-SD	3~400 V, 50 Hz	191 mm	204.2 m	136.8 m³/h	55.00 kW	289.0 kg	6075425
Sub TWI 8.90-11-C-SD	3~400 V, 50 Hz	191 mm	229.3 m	136.8 m³/h	55.00 kW	292.0 kg	6075426
Sub TWI 8.90-12-C-SD	3~400 V, 50 Hz	191 mm	251.5 m	136.8 m³/h	55.00 kW	297.0 kg	6075427
Sub TWI 8.90-13-C-SD	3~400 V, 50 Hz	191 mm	265.8 m	136.8 m³/h	75.00 kW	343.0 kg	6075428
Sub TWI 8.90-14-C-SD	3~400 V, 50 Hz	191 mm	295.9 m	136.8 m³/h	75.00 kW	347.0 kg	6075429
Sub TWI 8.90-15-C-SD	3~400 V, 50 Hz	191 mm	319.4 m	136.8 m³/h	75.00 kW	355.0 kg	6075430
Sub TWI 8.90-17-C-SD	3~400 V, 50 Hz	196 mm	345.9 m	136.8 m³/h	93.00 kW	460.0 kg	6075431
Sub TWI 8.90-18-C-SD	3~400 V, 50 Hz	196 mm	356.1 m	136.8 m³/h	93.00 kW	464.0 kg	6075432
Sub TWI 8.90-20-C-SD	3~400 V, 50 Hz	196 mm	411.7 m	136.8 m³/h	93.00 kW	471.0 kg	6075433

Those. information

Name decoding

For example:	Wilo-Sub TWI 8.80-02-C-SD
TWI	Submersible pump
8	Diameter of the hydraulic part in inches ["]
80	Nominal volumetric flow [m³/h]
02	Number of hydraulic stages
C	Designation of pump generation
SD	Startup type Unmarked = direct start SD = start «star-delta»

Technical Specifications

Mains connection: 3~400 V, 50 Hz
Operating mode in immersed state: S1
Pumped liquid temperature:
- Hermetically sealed motors: 3-20 °C or 3-30 °C (depending on type)
- Rewindable motors: 3-30°C (depending on type)
Minimum motor winding speed: 0.1 to 0.5 m/s (depending on type)
Max. sand content: 50 g/m3
Max. starts: 10 - 20/h (depending on type)
Max. immersion depth: 100 - 350 m (depending on type)
Protection class: IP 68
Pressure connection: Rp 5

Materials

Casing hydraulic section: stainless steel 1.4301
Impellers: Stainless steel 1.4301
Hydraulic shaft: Stainless steel 1.4057
Motor housing: EN-GJL or stainless steel 1.4301
Motor shaft: Stainless steel 1.4021, 1.4301 or 1.4305

Description/construction
Submersible motor pump with ACS approval for vertical or horizontal installation.

Hydraulic part

Multistage submersible pump with 6" or 8" NEMA connections and semi-axial impellers in split casing design. Integral check valve. All parts in contact with fluid are made of corrosion-resistant materials.

Electric motor

Three phase electric motor with direct or star-delta starting. Fully encapsulated resin-impregnated motor, winding with insulating coating, or motor with rewindable winding, PVC-insulated winding, self-lubricating bearings, water-glycol mixture filling. Electric motors of series NU 611, NU 8... .... alternatively are allowed to be filled with potable water (T version).

Cooling

The motor is cooled by the fluid being pumped. The motor may only be operated in immersed state. The maximum temperature limits for the pumped liquid and the minimum flow speed must be observed. Vertical installation can be carried out with or without a cooling jacket - at the customer's choice. Horizontal installation can be done with a cooling jacket.

Pressure Cover

The pressure jacket makes it possible to install the unit directly into the piping system. The standard design of the pump inside the pressure jacket is without a non-return valve. The maximum inlet pressure is 10 bar.

Download

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

Colors

DOP

Wilo CAD

The Wilo CAD online library contains DWG drawings of Wilo pumping equipment. In this library, the dimensions of the pumping equipment are given as a guideline. Please note that the contents of the Wilo CAD online library are subject to technical changes.

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