Submersible pump Pedrollo 4SR8-23

The hydraulic section is the key element of any deep-well pump. It is responsible for moving water from depth to the surface, creating working pressure, and ensuring an uninterrupted flow. The reliability, structural precision, and material quality of this part are critical for long-term, trouble-free operation. The Pedrollo 4SR8-23 model belongs to the professional series of pumps with increased flow rate and head, designed for operation in harsh conditions and for facilities with high water consumption. It is a powerful and reliable solution, combining engineering precision with wear-resistant materials.

Design and Technologies of Pedrollo 4SR8-23

The 4SR8-23 model is equipped with 23 hydraulic stages, which provides significant head and stable water supply in systems with large vertical lifts or complex piping. At the same time, the pump demonstrates excellent resistance to sand contamination (up to 150 g/m³), which is critically important for wells in Moldova and other regions with mineralized water.

Design features:

Large diameter impellers, made of reinforced technopolymer, are resistant to abrasive wear and water hammer.

Diffusers are optimized in shape for improved water flow and reduced pressure losses.

Stainless steel shaft with reinforced bearing supports for operation under high axial loads.

Innovative axial insert protects internal mechanisms from the penetration of sand and solid particles.

High maintainability – modular design facilitates technical service.

Technical Specifications

Number of stages: 23.

Well diameter: from 4" (100 mm).

Maximum submersion depth:

up to 200 m with 4PD motor,

up to 100 m with 4PS motor.

Water temperature: up to +35°C.

Permissible sand content: up to 150 g/m³.

Installation type: vertical or horizontal (with the use of a safety cable).

Compatibility: with Pedrollo 4PD and 4PS electric motors.

Application of Pedrollo 4SR8-23

This powerful model is recommended for tasks requiring high performance and reliability: 

✅ Commercial water supply: hotels, residential complexes, public buildings with constant water demand. 

✅ Agriculture and farms: large-volume irrigation systems, including drip and sprinkler installations. 

✅ Industrial facilities where the pump operates continuously – cooling systems, wastewater disposal, treatment plants. 

✅ Firefighting stations: main or backup water source. 

✅ Individual water supply – for large country houses or estates with increased water needs.

Advantages of Pedrollo 4SR8-23

Increased performance – water supply with high flow rate and stable high head.

Protection against contamination – safely operates even in wells with sand impurities.

Resistance to loads – designed for long-term continuous operation.

Energy efficiency and durability – minimum energy losses with high output.

Reliable assembly and modularity – facilitates maintenance and replacement of parts if necessary.

The Pedrollo 4SR8-23 is professional equipment designed for high performance in harsh operating conditions. Thanks to its 23 stages, reinforced design, and patented sand protection system, this hydraulic section is ideally suited for industrial, agricultural, and commercial facilities requiring a powerful and reliable water supply system. It's not just a pump part – it's an investment in stability, efficiency, and Italian quality.