Domestic waterworks with submersible pump 3" STM 28 / 90l stainless steel - RTS

Product detailed description

This domestic water supply system is commonly installed in private homes, summer cottages, educational facilities, agricultural buildings, and irrigation systems. It is designed for environments where water sources such as wells or boreholes require a reliable pumping solution. The system handles water extraction from depths exceeding 8 m and is particularly useful in newly constructed wells or boreholes where sand content in the water may be high. The system supports continuous operation under variable hydraulic conditions and integrates with standard plumbing infrastructure.

Installers typically deal with system setup involving underground installation of the submersible pump, piping connections, and integration with pressure vessels and control components. The system requires careful alignment of inlet and outlet connections and adherence to sealing standards to prevent leaks. Proper positioning of the pump within the water source is crucial to ensure efficient performance and longevity.

Technical parameters

EAN	8585054501854
Length of supply cable (m)	20
Maximum flow rate (l/min)	100
Pump voltage (V)	230 V
Dimensions H x W x D (cm)	173 x 7.62
Pump head (m)	108
Weight	35 kg
Code	PR_40034

The maximum flow rate of 100 l/min indicates the system’s ability to deliver water quickly, while the head capacity of 108 m determines how high the water can be pumped against gravity. The 20 m cable length provides sufficient reach for most deep well installations. The 230 V power requirement ensures compatibility with standard single-phase electrical systems. The overall dimensions (173 x 7.62 cm) are relevant for fitting the unit within available spaces during installation planning.

Installation and connection

To install the system, position the submersible pump vertically within the well casing, ensuring it is fully submerged. Connect the pump to the discharge pipe using a 1-inch threaded coupling and secure all joints with sealing tape or gaskets. The pressure tank should be mounted at ground level, and the expansion valve must be adjusted according to the tank’s specifications. Verify that the electrical supply matches the pump’s voltage requirements and that the circuit includes appropriate protective devices such as fuses or circuit breakers. Common installation errors include incorrect pump depth, insufficient sealing of pipe connections, and failure to align the pump axis with the well casing, which can lead to mechanical stress and reduced efficiency.

Compatibility and accessories

The system is compatible with standard 1-inch threaded fittings and includes a check valve, ball valve, pressure switch, and pressure vessel. Additional components such as pressure regulators, flow meters, or filtration units may need to be ordered separately depending on the specific application requirements. For optimal performance, ensure all connections are made with corrosion-resistant materials, especially when working with stainless steel components.

Technical background for designers

The submersible pump operates on centrifugal force generated by the rotating impeller, which increases the kinetic energy of the water and converts it into pressure energy. The stainless steel construction offers resistance to corrosion and wear, making it suitable for long-term exposure to water. Floating impellers reduce the risk of abrasion caused by sand or other particulate matter, extending the operational lifespan of the system. Integration into larger systems requires careful calculation of total dynamic head and flow rate to match the pump’s capabilities. Factors affecting performance include water quality, ambient temperature, and the presence of dissolved gases, which can influence cavitation risk and pump efficiency.

Service and operation

Regular inspection of the pump housing for signs of wear or leakage is recommended. Clean the inlet filter periodically to prevent blockage from debris. Check the pressure tank’s air pressure using the built-in pressure gauge and adjust if necessary. Ensure that the electrical connections remain dry and free from corrosion. No scheduled service intervals are specified in the provided documentation; however, abnormal noise, reduced flow, or fluctuating pressure levels may indicate the need for further investigation or maintenance.

Frequently asked questions

Can this pump operate in water with high sand content?
Yes, the pump is specifically designed with floating impellers to handle water containing sand and abrasive particles, making it suitable for newly drilled wells or boreholes.

What type of electrical supply is required for the pump?
The pump requires a 230 V single-phase supply. Ensure the circuit includes a dedicated fuse or circuit breaker rated for the motor’s current draw.

Is this system suitable for irrigation purposes?
Yes, the system delivers a consistent flow rate and sufficient pressure for irrigation tasks, including garden sprinklers and drip systems.

How is the pressure tank integrated into the system?
The pressure tank is connected via standard 1-inch fittings and acts as a buffer to maintain stable pressure between pump cycles. An internal diaphragm separates the air chamber from the water chamber to ensure even pressure distribution.