Domestic waterworks with submersible pump 2,5" STM 31 / 140l stainless steel - RTS

Product detailed description

This domestic water supply system is designed for installation in deep wells, boreholes and newly constructed water sources where water may contain abrasive particles such as sand. It is commonly used in residential properties, summer homes, schools and agricultural facilities. The system is suitable for potable and utility water supply, irrigation and garden watering applications. The submersible pump operates at 230 V and is equipped with floating impellers to reduce wear from abrasive particles. The system includes a 140L stainless steel pressure tank, pressure switch and various fittings for secure installation.

Installers typically encounter this system in scenarios where water sources are deep or contain sediment. The system is compatible with standard domestic water distribution systems and can be integrated with pressure regulators and control units. It is important to ensure the pump is fully submerged and the pressure tank is correctly sized for the system demand.

Technical parameters

EAN	8585054501618
Inlet cable length (m)	20
Maximum flow (l/min)	45
Pump voltage (V)	230 V
Dimensions H x W x D (cm)	143 x 6.35
Pump head (m)	85
Weight	33.5 kg
Code	PR_40007

The maximum flow rate of 45 l/min and a head of 85 m indicate the pump's ability to supply water to elevated or distant points. The 230 V supply voltage is standard for single-phase systems. The 140L stainless steel pressure tank provides sufficient storage for intermittent demand. The 20 m cable length allows for installation in deep wells or boreholes.Installation and connection The installation process involves lowering the submersible pump into the water source using the 20 m supply cable. The pump must be fully submerged to prevent dry running. The pressure tank is connected via 1 inch fittings and must be pre-pressurised using the 1/2 inch stainless steel valve. A check valve and pressure switch are included to regulate system operation. Installers should verify that all connections are secure and leak-free. Common installation errors include incorrect tank pressure settings and improper cable routing, which can lead to system inefficiency or failure.Compatibility and accessories This system is compatible with standard domestic water distribution systems and can be integrated with pressure regulators, control units and expansion vessels. The included components such as the pressure switch, check valve and fittings are sufficient for most installations. Additional accessories such as filters or flow meters may be required depending on the water quality and system requirements. Installers should ensure that all components are correctly sized and compatible with the system's flow and pressure characteristics.Technical background for designers The submersible pump operates on a centrifugal principle, using floating impellers to reduce wear from abrasive particles. The stainless steel pressure tank provides corrosion resistance and long-term reliability. The system is designed to operate with a 230 V supply and must be integrated with a suitable electrical circuit. The pump's performance is affected by the depth of the water source, the presence of sediment and the system's demand. Designers should consider the total dynamic head and flow requirements when sizing the system for a specific application.Service and operation The system requires periodic inspection to ensure the pump is functioning correctly and the pressure tank is maintaining the correct pressure. The check valve and pressure switch should be checked for wear and replaced if necessary. The pump should be removed for inspection and cleaning if the water source contains high levels of sediment. There are no specified service intervals in the brief, but regular maintenance is recommended to ensure long-term performance.Frequently asked questions

Can this system be used in a newly drilled borehole?
Yes, the floating impellers and sand resistance make it suitable for new boreholes where water may contain sediment.

What is the maximum depth this pump can operate at?
The pump is suitable for depths exceeding 8 m, making it ideal for deep wells and boreholes.

Is the pressure tank compatible with other pressure switches?
The included pressure switch is designed for this system, but compatible alternatives can be used if they match the system's pressure range.

Can the pump be used with a variable frequency drive?
There is no information in the brief about compatibility with variable frequency drives; consult the manufacturer's technical data sheet for details.