Wilo-Sub TWI 8

Wilo-Sub TWI 8 Multi-section 8 ' submersible pump in strap design for vertical or horizontal installation

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


Product designation Motor connection Motor diameter DM Motor head, Hmax Run rate max. Qmax 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

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