Domestic waterworks with submersible pump 3" STM 28/140l stainless steel - RTS

Product detailed description

Domestic waterworks with submersible pumps are essential in systems requiring reliable water supply from deep wells or boreholes. This unit is commonly used in residential homes, summer cottages, schools and agricultural facilities. It integrates a submersible pump, pressure tank and ancillary components for stable operation. Installers typically work with systems where water sources are located at significant depths and require resistance to abrasive particles such as sand. The unit is suitable for new or existing wells, especially those with high sediment content.

The installation involves placing the pump in the well, connecting the pressure tank and ensuring correct electrical and hydraulic connections. The system is designed to handle both potable and utility water supply and supports irrigation and garden watering applications. The floating impeller design reduces wear from suspended particles, making it ideal for environments with variable water quality.

Technical parameters

EAN	8585054501861
Length of supply cable (m)	20
Maximum flow (l/min)	100
Pump voltage (V)	230 V
Dimensions Height x Width x Depth (cm)	173 x 7.62
Weight	108
Weight	40 kg
Code	PR_40041

The maximum flow rate of 100 l/min indicates the unit's capacity to supply water under normal conditions, while the head of 108 m reflects its ability to lift water from deep wells. The 230 V rating specifies the required electrical supply. These parameters are crucial for determining the suitability of the unit for specific well depths and water demand levels. The 20 m cable length ensures sufficient reach for most installation scenarios.

Installation and connection

The installation process begins with verifying the well depth and water quality. The pump must be lowered into the well using a suitable support structure to avoid direct contact with the well walls. The pressure tank should be mounted at ground level, with the inlet and outlet connections aligned to the required system layout. The 3 inch inlet and outlet ports require compatible fittings for secure connections. Key checkpoints include confirming the correct polarity of the electrical supply and testing the pressure tank's pre-charge. Common installation errors include incorrect cable routing, which can lead to overheating, and improper alignment of the pump with the well casing, causing vibration and mechanical stress. The 20 m cable length allows flexibility in positioning the control panel near the power source.

Compatibility and accessories

This waterworks unit is compatible with standard domestic and agricultural water distribution systems. It includes a 140L stainless steel pressure tank, check valve, pressure switch and various fittings for system integration. Additional components such as expansion vessels, filters and control panels may be required depending on the system configuration. The stainless steel construction ensures compatibility with potable water supply systems and minimises corrosion risks.

Technical background for designers

The submersible pump operates by converting electrical energy into mechanical energy through an electric motor. The impeller draws water into the pump casing and expels it through the discharge port. The floating impeller design allows the blades to adjust to varying sediment loads, reducing wear from abrasive particles. The stainless steel tank provides a durable storage solution and maintains water pressure between pump cycles. The system is integrated into the water supply network using standard pipe connections and fittings. The pressure switch regulates pump activation based on system demand, optimising energy consumption and extending component lifespan. The design prioritises reliability in environments with fluctuating water quality and requires minimal maintenance.

Service and operation

Routine maintenance includes inspecting the pump for signs of wear and checking the pressure tank's pre-charge level. The check valve should be tested for proper sealing to prevent backflow. No scheduled service intervals are specified in the brief, but periodic visual inspections are recommended to ensure continued performance. The stainless steel components reduce the need for frequent replacement and contribute to long-term operational efficiency.

Frequently asked questions

Can this unit be used in newly drilled wells?
Yes, the floating impeller design allows the pump to handle water with higher sediment content, making it suitable for newly drilled wells where sand or grit may be present.

What is the maximum depth this pump can operate at?
The pump is suitable for depths exceeding 8 m, with a total head capacity of 108 m, making it appropriate for deep wells and boreholes.

Is a pressure tank included in the set?
Yes, the set includes a 140L stainless steel pressure tank, which helps stabilise water pressure and reduce pump cycling.

Can this pump be controlled by a programmable controller?
The pump operates via a pressure switch included in the set. For advanced control, an external programmable controller may be added to regulate pump operation based on specific requirements.