Submersible pump Pedrollo 4SR4-7

Pedrollo 4SR4-7 is the hydraulic section of a deep-well centrifugal pump, designed for lifting and supplying clean water from boreholes and wells. The hydraulic section is the main working part of the pump, where water is drawn in and pressure is generated. In the 4SR4-7 model, this task is achieved through a multi-stage design with a series of impellers and diffusers arranged axially. Such pumps provide high pressure and stable flow even at great depths, making them indispensable in domestic and agricultural applications.

Design Features and Technology

Pedrollo 4SR4-7 is designed for operation in near-real conditions, including wells with a small amount of sand (up to 150 g/m³). The patented hydraulic design includes axial water movement and a specially formed front insert that prevents solid particles from entering the central shaft and the working components of the pump.

Main structural elements:

Impellers made of glass fiber-reinforced technopolymer, resistant to wear.

Stainless steel shaft with anti-corrosion protection.

Diffusers ensuring laminar flow movement.

Compact modular design, providing quick access to components for maintenance.

The entire hydraulic section is designed to work with Pedrollo 4PD (oil-filled) and 4PS (water-cooled) electric motors. It can be installed in both vertical and horizontal positions—ideal for limited installation conditions.

Technical Parameters and Compatibility

Permissible submersion depth: up to 200 meters with 4PD, up to 100 meters with 4PS.

Minimum well diameter: 4 inches (100 mm).

Maximum sand content: 150 g/m³.

Working medium type: clean water.

Installation: vertical or horizontal (a safety cable is recommended for vertical installation).

Areas of Application for Pedrollo 4SR4-7

The 4SR4-7 model is suitable for a wide range of tasks: 

✅ Domestic water supply: stable water supply to private houses, cottages, and country houses. 

✅ Agriculture: used for irrigating gardens, vegetable gardens, greenhouses, and on farms. 

✅ Pressure boosting systems: helps to ensure constant pressure in local water supply networks. 

✅ Low-power industrial facilities: used in car washes, workshops, and production lines. 

✅ Firefighting systems: a reliable water source with a backup tank.

Advantages of the 4SR4-7 Model

Reliability in contaminated conditions: unique protection against clogging and wear.

Compactness and ease of maintenance: well-thought-out modular structure.

Energy efficiency: the impeller design reduces energy consumption while maintaining high pressure.

Durability: resistance to corrosion and mechanical wear.

Versatility of application: from domestic to industrial use.

This is one of the most balanced models in the 4SR series, designed for users who value compactness, economy, and reliability. The high quality of components and strict production control ensure stable operation even in intensive conditions. If you need a pump with proven efficiency that will serve for decades, the Pedrollo 4SR4-7 will fully meet your expectations.