WILO Zetos K8.50-5 (22KW) deep well pump, 5" internal thread

Deep well pump / Submersible pump / Underwater pump / Electric pump WILO Actun Zetos K8.50.5-KOR (22 kW)

Efficient raw water extraction for every application

The Wilo-Actun ZETOS is our universal solution for efficient raw water extraction, whether in municipal water supply, agriculture, or mining. With the highest pump efficiency in its class, up to 85.5%, it is ideal for energy-efficient water supply in virtually any process. Its durable stainless steel casting and robust design guarantee a long service life and consistently high performance, even under challenging conditions, such as sand content of up to 150 g/m³.

Pump (type): K8.50-5 KOR
Number of steps: 5 steps
Pump (size): 8"
Connection: discharge connection with internal thread 5"
Pump diameter: Ø 204 mm (without cooling jacket)
Rotor diameter: Ø 139 mm
Material Pump (hydraulics): Housing and impellers made of precision-cast stainless steel (1.4408)
Sand content: max.: 150 g/m³
Recommended operating range: 15 - 67 m³/h
Engine: NU611-2/22
Rated engine power: 22 kW
Cable: 20 m in star/delta configuration (7-pin) S07BB-F 2x4G4 mm²
Frequency: 50 Hz
Warranty: 2+1 years

Benefits for the user:
✔️ 20 m of motor cable as standard (without breaks or interruptions)
✔️ Pump and motor production - Made in Germany
✔️ 2+1 year warranty from the date of purchase
✔️ Energy-saving water supply thanks to maximum pump efficiency of 85%
✔️ Economical operation thanks to the highest overall efficiency in its class
✔️ Exceptional corrosion resistance thanks to hydraulic components made entirely of precision-cast stainless steel 1.4408 (AISI 316)
✔️ High wear resistance: Maximum sand content 150 g/m³
✔️ ACS approved for use in drinking water

Performance data (guideline values):
(Rotor twisted to 140 mm)

m³/h - bar
20 - 13.2
40 - 12.3
50 - 11.3
55 - 10.8
60 - 10.2
65 - 9.5
70 - 8.7
max. 68 m³/h
The 22 kW motor is operating at its limit during start-up (star-delta starting current)!

Therefore, the electric pump should only be started when the valve is closed.

Important information:
A water flow of 0.2 m/s is required to cool the engine.
This is guaranteed for wells up to 300 mm in diameter. For wells larger than 300 mm, WILO recommends using a cooling jacket.
For more information, please refer to the technical data sheet in the Documents section.

Scope of delivery:
Zetos K8.50-5 pump + NU611-2/22 engine
(delivered assembled)
20 m long cable, 7-pin - for star-delta connection
without protective cover (suitable additional accessory)
Shielded cable available for additional charge

Dimensions (mm):
Total length (L): 2076 mm
Engine length (M): 1079 mm
Step length (G): 124 mm
Diameter without cooling jacket (G): 204 mm
Diameter with cooling jacket (G): 300 mm

Would you like to buy WILO products?

High-quality materials and technology maximize the performance and therefore the availability of WILO deep well pumps.