Submersible pump Pedrollo 4SR4-14

The hydraulic section is the "heart" of a borehole pump, responsible for generating head and lifting water from depth. It includes a multi-stage system of impellers, diffusers, a shaft, and protective components. The Pedrollo 4SR4-14 model is a multi-stage (14 impellers) hydraulic section, specially designed for operation in conditions requiring high pressure and stable water supply, including the presence of minor sand impurities (up to 150 g/m³).

Design and Technical Solutions of Pedrollo 4SR4-14

The Pedrollo 4SR4-14 combines advanced engineering developments from Pedrollo, aimed at ensuring durability, energy efficiency, and resistance to contamination:

14 working stages create a high head at moderate flow, ideally suited for systems with significant vertical lift.

Impellers are made of high-strength technopolymer, reinforced with glass fiber – this increases resistance to mechanical stress and abrasion.

The patented front insert directs axial water movement and blocks sand passage into moving parts.

A stainless steel shaft and high-precision diffusers ensure stable operation without vibrations or wear.

Corrosion-resistant materials, resistant to aggressive environments, allow the pump to be used in difficult conditions and for a long service life.

This model is compatible with Pedrollo 4PD (oil-filled) and 4PS (water-cooled) electric motors, is installed in wells with a diameter of 4 inches or more, and allows for both vertical and horizontal installation.

Technical Specifications

Number of stages: 14.

Recommended well diameter: from 100 mm (4").

Submersion depth: up to 200 m with 4PD motor / up to 100 m with 4PS.

Maximum permissible sand content: up to 150 g/m³.

Compatible motors: Pedrollo 4PD and 4PS.

Materials: technopolymer, stainless steel, wear-resistant seals.

Areas of Application for Pedrollo 4SR4-14

Thanks to its high performance and reliable design, the Pedrollo 4SR4-14 model is in demand for a wide range of tasks:

 ✅ Autonomous water supply for cottages and residential complexes where consistent high pressure is required. 

✅ Irrigation and watering of large areas – greenhouses, vineyards, agricultural fields. 

✅ Industrial facilities and enterprises where water supply over long distances or with high elevation differences is needed. 

✅ Fire reservoirs – for pumping water from depth in emergency systems. 

✅ Pressure boosting stations, pressure maintenance units in water mains.

Key Advantages of Pedrollo 4SR4-14

High head – 14 impellers create powerful lift, ideal for deep wells and multi-level distribution networks.

Increased resistance to contamination – allows for sand content up to 150 g/m³.

Safety and reliability – patented sand protection extends the unit's service life.

Efficiency and economy – due to precise hydrodynamic calculations, each stage operates with maximum output.

Installation flexibility – vertical or horizontal mounting, compatibility with multiple motor types.

If you are looking for pump hydraulics capable of providing a powerful and stable water flow even in deep well conditions or extensive irrigation systems, the Pedrollo 4SR4-14 will be an ideal choice. It is a time-tested solution from an Italian brand with an international reputation, combining performance, reliability, and technical elegance. It is ideal for users who value high quality and durability of equipment combined with accessible maintenance.