Wilo-Sub TWI 6
Your advantages
- Long service life thanks to corrosion-resistant stainless steel, optionally in V4A quality
- ACS certified for domestic hot water applications
- A high degree of flexibility thanks to versions in the 4, 6, 8 and 10-inch area
- High range of performance from 1 to 250 m³/h
Recommended services
Design
Multistage 6" submersible pump in tie strap version for vertical or horizontal installation
Application
For pumping drinking water (acc. to ACS and RI.SE), rainwater and industrial water with a maximum sand content of 50 g/m³ from boreholes and wells for:
- Irrigation
- Sprinkling
- Water supply
- Pressure boosting
- Groundwater level and lowering
Equipment/function
- Integrated non-return valve
- Discharge port acc. to NEMA
Typekey
Example: | Wilo-Sub TWI 6.18-04-C-SD |
TWI | Series |
6 | Diameter of the hydraulic unit in inches ["] |
18 | Rated volume flow [m3/h] |
04 | Number of hydraulic stages |
C | Series generation |
SD | Starting method
|
Technical data
- Mains connection: 3~400 V, 50 Hz
- Submerged operating mode: S1
- Fluid temperature: 3 – 30 °C
- Minimum flow rate at motor: 0.08 - 0.5 m/s (depending on motor)
- Max. sand content: 50 g/m3
- Max. number of starts: 20/h
- Max. submersion depth: 100 m or 350 m (depending on motor)
- Protection class: IP68
- Pressure connection: Rp 2½ - Rp 3
Materials
- Hydraulics housing: 1.4301 (AISI 304)
- Impellers: 1.4301 (AISI 304)
- Hydraulics shaft: 1.4057 (AISI 431)
- Motor housing: 1.4301 (AISI 304)
- Motor shaft: 1.4301 (AISI 304) or 1.4305 (AISI 303)
Construction
Submersible motor pump for vertical or horizontal installation.
Hydraulics
Multistage submersible-motor pump in tie strap version with radial or semi-axial impellers, integrated non-return valve and a standardised connection:
- 4" motor connection: NEMA standard
- 6" motor connection: NEMA standard
Discharge port with threaded flange and internal thread. All parts that come in contact with the fluid are made of corrosion-free materials.
Motor
Three-phase AC motor for direct or star-delta start:
- Encapsulated motor with enamel-insulated, resin-impregnated winding and water-glycol filling
- Rewindable motor with PVC-insulated winding and water-glycol filling
The motor bearings are self-lubricating.
Cooling
- The motor is cooled by the pumped fluid. Operate the motor always immersed.
- Vertical installation is possible with or without cooling jacket.
- Horizontal installation must be performed in conjunction with a cooling jacket.
Scope of delivery
- Hydraulics + motor completely assembled
- 4 m, 5 m or 10 m connecting cable with drinking water approval
- Installation and operating instructions
Options
- Hydraulics in 1.4401 (AISI 316)
- Motor in 1.4401 (AISI 316), 1.4408 (ASTM A 351) or 1.4571 (AISI 316TI)
- Rewindable motor
- Motor with drinking water filling
- Pressure shroud version for the direct installation of the pump in the pipe system (max. inlet pressure: 10 bar)
- Custom-made
Accessories
- Cooling jacket
- Booster shroud
- Diaphragm pressure vessel
- Gate valve
- Float switch
- Pressure switch
- Electrode
- Switchgear
- Alarm switchgear
- Casting resin kit
- Connection cable
Installation and operating instructions
Wilo-Sub TWI 4-6
| Article Number | 4069717 |
| Edition | 2021-10 |
| Number of pages | 60 |
| Language | bg, cs, da, el, en, et, fi, hr, hu, it, lt, lv, mk, nl, no, pl, pt, ro, sl, sr, sv, uk |
PDF (3 MB)Wilo-Sub TWI 4-6
| Article Number | 4069717 |
| Edition | 2021-10 |
| Number of pages | 12 |
| Language | en |
PDF (980 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 (327 KB)Certificate
Wilo-Sub TWI
| Article Number | 6080451 |
| Edition | 1612 |
| Number of pages | 14 |
| Language | language neutral |
PDF (388 KB)RCM
RCM 2223465
| Number of pages | 1 |
| Language | language neutral |
PDF (218 KB)RCM 2223484
| Number of pages | 1 |
| Language | language neutral |
PDF (198 KB)