Wilo-Sub TWI 4 -...- QC
Your advantages
- Quick and easy extension of motor cable, without dismantling the pump
- Easy maintenance due to quick installation and dismantling
- Integrated non-return valve
- Vertical and horizontal installation possible
Design
Multistage 4" submersible pump in tie strap version for vertical or horizontal installation
Application
- For water and drinking water supply from boreholes and rainwater storage tanks
- 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 radial impellers
- Integrated non-return valve
- NEMA coupling
- Three-phase motor
- Hermetically cast motor
Typekey
NO VALUE |
Technical data
- Mains connection: 3~400 V, 50 Hz
- Submerged operating mode: S1
- Fluid temperature: 3-30 °C
- Minimum flow rate at motor: 0.1 m/s
- Max. sand content: 50 g/m3
- Max. number of starts: 20/h
- Max. submersion depth: 350 m
- IP rating: IP68
- Pressure connection: Rp 1¼
Materials
- Hydraulic housing: Stainless steel 1.4301
- Impellers: Stainless steel 1.4301
- Hydraulics shaft: 1.4057 stainless steel
- Motor housing: Stainless steel 1.4301
- Motor shaft: 1.4305 stainless steel
Construction
Submersible-motor pump for vertical or horizontal installation.
Hydraulics
Multistage submersible-motor pump with 4" NEMA connection and radial or semi-axial impellers with sectional construction. Integrated non-return valve. All parts in contact with the fluid are made of corrosion-free materials.
Motor
Corrosion-free three-phase AC motor for direct starting. Sealed and hermetically cast motor, resin-impregnated, with enamel-insulated winding, self-lubricating bearing, with water-glycol filling.
Cooling
The motor is cooled by the fluid. The motor must always be operated in submerged state. The limit values for the max. fluid temperature and the minimum flow rate must not be exceeded. Vertical installation is possible optionally with or without cooling jacket. Cooling jacket is required for horizontal installation.
Scope of delivery
- Hydraulics + motor fully mounted
- 1.5 m connecting cable approved for drinking water (cross-section: 4x1.5 mm2)
- Installation and operating instructions
Options
- Hydraulics in 1.4401 stainless steel
- Motor in stainless steel 1.4401
Accessories
- Cooling shrouds
- Diaphragm pressure vessel
- Cable kits for potable and process water
- Float switch
- Switchgears
- Connection and installation material
Installation and operating instructions
Wilo-Sub TWI 4..., TWI 4-...-QC
| Article Number | 6061724 |
| Edition | 1110 |
| Number of pages | 344 |
| Language | da, en, et, fi, lv, mk, no, pt, sl, sr |
PDF (2 MB)Wilo-Sub TWI 4..., TWI 4-...-QC
| Article Number | 6061724 |
| Edition | 1110 |
| Number of pages | 28 |
| Language | en |
PDF (516 KB)Certification booklet
Wilo-Sub TWI 4, Wilo-Sub TWI 6/TWI 06, Wilo-Sub TWI 8/TWI 08, Wilo-Sub TWI 010
| Article Number | 6080451 |
| Edition | 2022-02 |
| Number of pages | 24 |
| Language | language neutral |
PDF (4 MB)Group Statement
Group Statement REACH
| Edition | 2021-05 |
| Number of pages | 5 |
| Language | language neutral |
PDF (271 KB)