Wilo Twi890-20-b-sd Borehole Pump 6047768

Wilo product

29% 29 percent off rrp

Department:

Wilo Subson Submersible Pumps

Wilo Twi890-20-b-sd Borehole Pump 6047768

• Easy maintenance due to rapid installation and dismantling
• Integrated non-return valve
• Vertical and horizontal (stage-dependent) installation possible
• Standard and configurable versions available
• Star/delta starting
• Cast and rewindable motors

WILO TWI890-20-B-SD BOREHOLE PUMP
Submersible-motor pump for vertical or horizontal installation.

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

Motor
Three-phase motor for direct or star-delta starting Sealed, hermetically cast motor, resin-impregnated, with enamel-insulated winding or rewindable motor with PVC-insulated winding, self-lubricating bearing, with water-glycol filling. NU 611, NU 8...-series motors can also be filled with potable water (T version).

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.

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

Manufacture:

Wilo

Notes:

Mains connection: 3~400 V, 50 Hz
Submerged operating mode: S1
Fluid temperature:
Hermetically cast motors: 3-20 °C or 3-30 °C (depending on type)
Rewindable motors (SD-R): 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 port: Rp 5

Material:

Standard version:
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 1.4021, 1.4301 or 1.4305<