Welcome to the BIG range!

The Grundfos Unilift KP 150-AV-1 is a high-quality stainless steel submersible drainage pump, designed for pumping clean and slightly dirty water / grey water from flooded cellars, pits, tanks and utility areas.

This model comes complete with an integrated vertical tube float switch (AV) and a 5 m mains cable, providing automatic level control in compact chambers where a standard swinging float may not have space to move freely. It’s particularly well suited to narrow sumps, plant rooms, service pits and applications where reliable, hands-off operation is essential.

The Unilift KP 150 range is built with a robust stainless steel housing, open impeller and free passage for small particles, offering dependable performance for domestic and light commercial use. Grundfos engineering ensures smooth, quiet running and long service life when correctly installed.

✔ Automatic operation with vertical tube float switch
✔ Stainless steel construction for durability and corrosion resistance
✔ Compact footprint – ideal for confined sumps and pits
✔ Suitable for grey water and slightly dirty water (not raw sewage)
✔ Trusted Grundfos build quality, backed by BIG’s hands-on experience

At Blue Industries Group, we only supply pump solutions we trust on real jobs — specified, selected and BuiltByBIG approved.

Brand: Grundfos
Series: Unilift KP
Model: KP 150-AV-1
Product Code: 011K7500
Pump Type: Submersible drainage / sump pump
Voltage: 1 × 220–240 V AC, 50 Hz
Motor Power: Approx. 0.15 kW (150 W class)
Cable Length: 5 m
Level Control: Integrated vertical tube float switch (AV) – automatic start/stop
Max Flow Rate: Up to approx. 9 m³/h (150 l/min), depending on head
Max Head: Up to approx. 10 m (see Grundfos curve for exact duty)
Max Immersion Depth: As per Grundfos installation guidance
Max Liquid Temperature: 0 °C to +50 °C
Max Particle Size: Up to 10 mm (suitable for slightly dirty / grey water)
Outlet Connection: Rp 1 ¼" (internal thread)
Material (Key Wet Parts):

• Pump housing & sleeve: Stainless steel

• Impeller: Stainless steel

• Shaft: Stainless steel

• Seals / O-rings: NBR

Protection & Performance:

• Enclosure Class: IP68

• Insulation Class: F

• Built-in thermal overload protection

• Designed for portable or permanent installation

Suitable Applications:

• Flooded cellar and basement drainage

• Sump pits and small chambers

• Grey water from showers, sinks, washing machines (no long fibres)

• Drainage of tanks, surface water pits, plant areas

• General emergency pump-out and light-duty site use

(Always refer to the official Grundfos documentation for detailed pump curve and installation requirements.)