Wilo-Sub TWI 10

Series description

Special features/product advantages

  • Optimised hydraulics with efficiency of up to 80 %.
  • Long service life thanks to corrosion-resistant stainless steel, optionally in V4A quality
  • ACS certified for domestic hot water applications
  • High range of performance from 1 to 250 m³/h
  • A high degree of flexibility thanks to versions in the 4, 6, 8 and 10-inch area

Design type

Multistage 10" submersible pump in tie strap version for vertical or horizontal installation

Application

  • For water and drinking water supply from boreholes and rainwater storage
  • Process water supply
  • For municipal water supply, sprinkling and irrigation
  • Pressure boosting
  • Lowering the water level
  • For pumping water in industrial applications
  • For pumping water without long-fibre and abrasive constituents

Equipment/function

  • Multistage submersible-motor pump with semi-axial impellers
  • Integrated non-return valve, spring-mounted
  • NEMA coupling up to 8" motor connection, standardised connection for 10" motor and larger
  • Three-phase motor
  • Hermetically cast motors
  • Rewindable motors

Scope of delivery

  • Hydraulics + motor fully assembled
  • Connecting cable approved for drinking water, cable cross-section and length per standard design or per customer request
  • Installation and operating instructions

Type key

Example:

Wilo-Sub TWI 010,125-02-NB + NU 811-2/90

Hydraulics:

TWI 010.125-02-NB

TWI

Hydraulics

0

Configurable series

10

Diameter of the hydraulic unit in inches ["]

125

Rated volume flow [m3/h]

02

Number of hydraulic stages

N

Impeller diameter (N = Standard, S = trimmed)

B

Series generation

Motor:

NU 811-2/90

NU

Submersible motor

811

Size (5…, 6... = 6"; 7…, 8… = 8")

2

Number of poles

90

Package length

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Immersed operating mode: S1
  • Fluid temperature:
    • Hermetically cast motors: 3-20 °C or 3-30 °C (depending on type)
    • Rewindable motors: 3-30 °C (depending on type)
  • Minimum motor flow: 0.1-0.5 m/s (depending on type)
  • Max. sand content: 50 g/m3
  • Max. number of starts: 10-20/h (depending on type)
  • Max. immersion depth: 100 - 350 m (depending on type)
  • Protection class: IP 68
  • Pressure connection: Rp 6

Materials

  • Hydraulic housing: Stainless steel 1.4301
  • Impellers: Stainless steel 1.4301
  • Hydraulics shaft: Stainless steel 1.4057
  • Motor housing: EN-GJL or stainless steel 1.4301
  • Motor shaft: Stainless steel 1.4542 or 1.4462 (depending on type)

Description/construction

Submersible pump with ACS approval for vertical or horizontal installation.

Hydraulics

Multistage submersible-motor pump with 6/8"-NEMA- or from 10" and larger with standardised connection and semi-axial impellers in sectional construction. Integrated non-return valve. All parts that come in contact with the fluid are made of corrosion-free materials.

Motor

Three-phase motor for direct or star-delta start. Sealed, hermetically cast motor, resin-impregnated, with enamel-insulated winding or rewindable motor with PVC-insulated winding, self-lubricating bearing, with water-glycol filling. Motors of the NU 611, NU 8..., NU 9... series are also available in drinking water version (T version).

Cooling

The motor is cooled by the pumped fluid. The motor must always be immersed when operated. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. Horizontal installation must be performed in conjunction with a cooling jacket.

Pressure shroud

The pressure shroud is used for the direct installation of the unit in the pipe network. Standard models are without mounted non-return valves. The maximum inlet pressure is 10 bar.

Downloads

General overview 2018 International version

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 72

PDF (11 MB)

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