Wilo-Sub TWI 5-504EM-FS water pump 4144940
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TECHNICAL DATA
Sales unit dimensions and weight: 1 pcs
Wilo-Sub TWI 5-504EM-FS water pump 4144940
Submersible water pump – a reliable source of clean water
The Wilo-Sub TWI 5-504EM-FS water pump is a solid and efficient device designed to supply water from wells, boreholes or tanks. The construction based on durable materials, such as stainless steel, guarantees a long service life and corrosion resistance, even in difficult conditions. This is an ideal solution for both single-family homes and professional applications where reliability and efficiency are required.
Construction and application
The Wilo-Sub TWI 5-504EM-FS pump is designed for pumping clean water. Its 5-inch housing made of stainless steel (grade 304 – 1.4301) provides strength and resistance to external factors. Equipped with a 0.75 kW motor, the pump achieves a maximum performance of 9.2 m³/h and a maximum head of 44.26 m. An integrated float switch (FS version) protects the pump from running dry, which significantly extends its life. The power cable with plug simplifies installation and connection to the 230 V power grid.
Key features and benefits
- Durability and reliability: Made of high-quality stainless steel (housing, impeller, shaft), which ensures corrosion resistance and long-term use.
- High efficiency: Maximum performance of 9.2 m³/h allows for efficient water supply even with high demand.
- Dry-running protection: The integrated float switch automatically shuts off the pump in the event of a lack of water, protecting the motor from damage.
- Easy installation: The power cable with plug simplifies the installation and connection process to the power grid.
- Wide range of applications: Ideal for wells, boreholes and tanks for clean water – both in domestic and industrial applications.
- Resistance to impurities: The pump is adapted to work in water containing up to 50 g/m³ of sand, which increases its reliability in less ideal conditions.
- Protection class IP68: Guarantees complete sealing and the possibility of immersing the pump to a depth of up to 17 meters without risk of damage.
- Motor with self-cooling: Allows the pump to operate even when partially submerged in water or with short-term flow interruption.
The Wilo-Sub TWI 5-504EM-FS pump is an investment in comfort and safety of access to clean water for years to come. Its solid construction and advanced technological solutions make it a recommended choice for both professional installers and demanding end users.

