Wilo-Sub TWI 8
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 8" submersible pump in tie strap version for vertical or horizontal installation
Application
Designed for pumping drinking water (in accordance with ACS and RI.SE) and process water with up to 50 g/m³ sand content from wells and rainwater storage tanks for the following applications:
- Water supply
- Pressure boosting
- Ground water drainage and lowering
Equipment/function
- Integrated non-return valve
- Discharge port according to NEMA
Typekey
Example: | Wilo-Sub TWI 8.80-02-C-SD |
TWI | Series |
8 | Diameter of the hydraulic unit in inches ["] |
80 | Rated volume flow [m3/h] |
02 | Number of hydraulic stages |
C | Series generation |
SD | Starting mode
|
Technical data
- Mains connection: 3~400 V, 50 Hz
- Submerged operating mode: S1
- Fluid temperature: 3 – 20 °C or 3 – 30 °C (depending on motor)
- Minimum flow rate at motor: 0.1 – 0.5 m/s (depending on motor)
- Max. sand content: 50 g/m3
- Max. number of starts: 10/h or 20/h (depending on motor)
- Max. immersion depth: 100 m or 350 m (depending on motor)
- Protection class: IP68
- Discharge port: Rp 5
Materials
- Hydraulics housing: 1.4301 (AISI 304)
- Impellers: 1.4301 (AISI 304)
- Hydraulic shaft: 1.4057 (AISI 431)
- Motor housing: EN-GJL-250 (ASTM A48 Class 35/40B) and 1.4301 (AISI 304)
- Motor shaft: 1.4021 (AISI 420) or 1.4301 (AISI 304) or 1.4305 (AISI 303)
Construction
Submersible pump for vertical or horizontal installation.
Hydraulics
Tie strap version of multistage submersible pump with semi-axial impellers, integrated non-return valve and a standardised connection:
- 6" connection: NEMA standard
- 8" connection: NEMA connection
Discharge port with threaded flange and female thread. All parts that come in contact with the fluid are made of corrosion-free materials.
Motor
Three-phase current motor for direct or star-delta start:
- Sealed motor with lacquer-insulated, resin-covered 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. Always operate the pump in a submerged state.
- 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, 8 m or 10 m connection cable approved for drinking water
- Installation and operating instructions
Options
- Hydraulics in 1.4401 (AISI 316)
- Motor in 1.4401 (AISI 316) or 1.4571 (AISI 316TI)
- 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 shroud
- Pressure shroud
- Diaphragm expansion tank
- Gate valve
- Float switch
- Pressure switch
- Electrode
- Switchgear
- Alarm switchgear
- Casting resin kit
- Connection cable
Installation and operating instructions
Submersible motor pump - motor pre-filled
| Article Number | 6094322 |
| Edition | 2007-05 |
| Number of pages | 72 |
| Language | en |
PDF (1 MB)Submersible motor pump - motor non-filled
| Article Number | 6094323 |
| Edition | 2007-05 |
| Number of pages | 72 |
| Language | en |
PDF (1 MB)Submersible motor pump in booster shroud - motor pre-filled
| Article Number | 6094324 |
| Edition | 2007-05 |
| Number of pages | 60 |
| Language | en |
PDF (922 KB)Submersible motor pump in booster shroud - motor non-filled
| Article Number | 6094325 |
| Edition | 2007-05 |
| Number of pages | 68 |
| Language | en |
PDF (1 MB)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)