Domestic waterworks with submersible pump 2,5" STM 24 / 90L stainless steel - RTS

Product detailed description

This domestic water supply system with submersible pump is commonly installed in residential properties, summer homes, schools and agricultural facilities where a stable water supply is required from wells or boreholes. The system is designed for environments where the water source is located at depths greater than 8 m and may contain abrasive particles such as sand. Installers typically encounter this system in off-grid properties, irrigation systems and small-scale water distribution networks. The stainless steel construction and floating impeller design make it suitable for both new and existing water sources with variable water quality.

The system is particularly useful in locations where water extraction requires resistance to abrasion and sediment. The pressure tank ensures consistent water delivery, while the submersible pump provides high head capacity. This makes the system ideal for use in rural areas, farms and properties with self-supply water systems. The compact dimensions and standard electrical connection simplify integration into existing infrastructure.

Technical parameters

EAN	8585054501526
Length of power cable (m)	20
Maximum flow rate (l/min)	45
Pump voltage (V)	230 V
Dimensions H x W x D (cm)	120 x 6.35
Pump head (m)	66
Weight	26.8 kg
Code	PR_39991

The maximum flow rate of 45 l/min and a head of 66 m allow for sizing based on the required water demand and elevation differences in the system. The 230 V motor operates on standard single-phase power supplies, making it compatible with most European electrical systems. The 20 m cable length should be considered when planning the distance between the pump and the control panel. The 90L pressure tank provides sufficient storage for intermittent usage patterns.

Installation and connection

To install the system, begin by securing the submersible pump to the pipe and lowering it into the well or borehole. Connect the power supply using a dedicated circuit with appropriate protection devices. The pump inlet is equipped with a 1" socket, requiring a compatible pipe connection. Ensure the pressure tank is mounted securely and the pressure switch is correctly adjusted. Verify the installation by checking for leaks at all connections and ensuring the pump starts and stops within the expected pressure range. Common errors include incorrect pressure switch settings, improper cable routing and failure to bleed air from the system before commissioning.

Compatibility and accessories

This system is compatible with standard domestic water supply piping systems using 1" connections. Additional components such as pressure regulators, expansion vessels and filtration units may be required depending on the application. The included ball valve allows for system isolation during maintenance. While no related products are specified in the brief, typical additions might include pressure gauges, check valves and electrical protection devices.

Technical background for designers

The submersible pump operates on a centrifugal principle, with the motor sealed within the pump housing to prevent water ingress. The stainless steel construction provides corrosion resistance, while the floating impellers reduce wear caused by abrasive particles. The pump is integrated into the system via a pressure tank that maintains a stable supply and reduces pump cycling. The service life is influenced by water quality, correct pressure settings and regular inspection of the sealing elements. The 230 V electrical connection requires proper earthing and overload protection.

Service and operation

Regular checks should include monitoring the pressure tank’s air pressure and inspecting the pump cable for damage. Ensure the pressure switch functions correctly and the pump starts and stops at the expected pressure levels. Clean the pump intake filter if installed and verify the integrity of all seals. No specific service intervals are provided in the brief, but annual inspections are recommended for long-term reliability.

Frequently asked questions

Can this system be used with a new borehole containing sand?
Yes, the floating impellers increase resistance to abrasion, making it suitable for new wells with higher sand content.

Is a separate pressure regulator required?
No, the included pressure tank and switch provide sufficient regulation for standard domestic use.

What type of pipe connections are needed?
The pump uses a 1" socket, requiring compatible fittings for secure installation.

Can the pump be controlled remotely?
Remote control would require additional wiring and a compatible control panel, which is not included in the standard set.