4" ST 8-20 - Submersible Pump
The IBO 4" ST 8-20 submersible pump is a multistage centrifugal unit with a diameter of 100 mm, powered by three-phase 400 V electricity. Thanks to its increased resistance to sand and floating impellers, it also operates reliably in water intakes with poorer water quality. It is designed to draw and pump raw water from a deep drilled well for use in residential and agricultural applications and irrigation systems.
Who it's for
- Owners of single- and multi-family homes with their own deep well – for the continuous, reliable drawing and pumping of raw water.
- Farms – increased resistance to sand and continuous operation are suitable for intensive water intake.
- Users of irrigation systems – the pump supplies sprinklers, drip lines, and drainage systems.
- Installers – three-phase power and a durable design make it easier to select the pump for more demanding installations.
Applications
The 4" ST 8-20 submersible pump is designed to draw and pump technically clean raw water from drilled deep wells. It is used in homes and farms supplied by their own water intake, in heat pump installations, and for supplying irrigation and drainage systems. The pump is not a water treatment device – when using it for other purposes, we recommend ensuring appropriate water preparation.
The pump operates in a vertical position, submerged in a well with a minimum internal diameter of 115 mm. The pumped raw water must not contain mechanical impurities apart from the permissible sand content, and its temperature should not exceed 35°C. The 4" ST 8-20 400V submersible pump is a durable solution for long-term operation on a farm.
Features of the 4" ST 8-20 pump
The 4" ST 8-20 pump is a multistage centrifugal unit with a diameter of 100 mm, powered by three-phase 400 V electricity. The use of floating impellers and increased resistance to sand enable reliable operation in water intakes where standard submersible pumps would undergo accelerated wear. The permissible sand content is up to 5%, and the motor is oil-cooled.
Thermal protection built into the motor winding protects the device against overheating. The suction and discharge bodies are made of brass; the housing, shaft, and rotor are made of AISI 304 stainless steel; and the impellers and diffusers are made of PPO polymer. The mechanical seal uses a SiC/SiC/NBR arrangement. The pump is supplied as standard with a 2 m power cable.
- Type: multistage centrifugal submersible pump
- Pump diameter: 100 mm
- Minimum well diameter: 115 mm
- Power supply: 3~ 400 V / 50 Hz
- Protection rating / insulation class: IP68 / class B
- Operating mode: continuous
- Max. liquid temperature: 35°C
- Max. immersion depth: 150 m
- Power cable: 2 m
- Materials: brass, AISI 304 stainless steel, PPO polymer
IBO – 24-month (2-year) manufacturer’s warranty. Warranty service and post-warranty service are provided by Dambat.
Dambat – a trusted manufacturer of pumps and hydrotechnical equipment with quality certificates.
Frequently Asked Questions (FAQ) – 4" ST 8-20 submersible pump
What is the 4" ST 8-20 submersible pump used for?
The IBO 4" ST 8-20 pump is used to draw and pump technically clean raw water from drilled deep wells. It is suitable for homes and farms as well as irrigation systems.
How does the 4" ST differ from the 4" STM?
4" ST pumps are powered by three-phase 400 V electricity, while 4" STM pumps use single-phase 230 V electricity. The hydraulics of both versions are the same, and the choice depends on the type of power supply available in the installation.
In what type of well can the 4" ST 8-20 pump be installed?
The pump can be installed in a well with a minimum internal diameter of 115 mm, in a vertical position. The maximum immersion depth is 150 m, and the discharge connection should be located at least 2 m above the lowest water level.
Can the 4" ST 8-20 pump handle sandy water?
The pump has increased resistance to sand thanks to its floating impellers and permits a sand content of up to 5%. However, please note that pumping sandy water still shortens the service life of the working components.
Which liquids must not be pumped with the 4" ST 8-20 pump?
The pump must not be used for salt water or water containing corrosive, flammable, petroleum-based, or long-fiber contaminants. It is also unsuitable for food products or water with an excessive mineral content.
Where can I buy the 4" ST 8-20 submersible pump?
As the manufacturer, we do not sell directly. The IBO 4" ST 8-20 submersible pump can be purchased from our sales partners, installation wholesalers, and authorized online distributors.
What warranty does the 4" ST 8-20 pump come with?
The IBO 4" ST 8-20 submersible pump is covered by a 24-month (2-year) manufacturer’s warranty. Warranty service and post-warranty service are provided by Dambat.
