Submersible pump Pedrollo 4SR1.5-25

The hydraulic section is a key component of a borehole pump, responsible for lifting and moving water. It includes all elements that ensure the pump's operation without considering the electric motor: impellers, diffusers, shaft, bearings, and connecting assemblies. This part creates the necessary pressure and head of water and directly affects performance, durability, and resistance to contamination. In the case of Pedrollo 4SR series pumps, the hydraulic section is designed for operation in deep wells and the possible presence of solid particles in the water.

Design and Operating Principle of Pedrollo 4SR1.5-25

The 4SR1.5-25 model belongs to the line of deep-well pumps designed for operation in wells with a diameter of at least 100 mm (4 inches). It is equipped with a multi-stage hydraulic section with axial (reactive) water movement. The impellers and diffusers are made of durable, corrosion-resistant materials that are resistant to the abrasive action of sand particles. A patented front insert and the original shape of the flow part prevent solid particles from penetrating the mechanism.

The pump's operation is based on the principle of converting kinetic energy into pressure: the rotation of the electric motor is transmitted via the shaft to the impellers, which create pressure by moving water through all cascades of the hydraulic section up the discharge pipe.

Main Technical Features of Pedrollo 4SR1.5-25

Maximum permissible sand content: up to 150 g/m³ – allowing the pump to be used even in wells with a small amount of impurities.

Well diameter: from 4" (100 mm), suitable for standard household wells.

Maximum submersion depth: up to 200 meters when operating with a Pedrollo 4PD motor (oil-filled) and up to 100 meters with a water-cooled 4PS motor.

Materials: high-quality stainless steel and technopolymers, ensuring resistance to corrosion and wear.

Installation type: both vertical and horizontal installation is possible. For vertical installation, the use of a safety cable is recommended.

Areas of Application

The Pedrollo 4SR1.5-25 is a versatile solution suitable for a variety of tasks, including:

Autonomous water supply for private homes, dachas, and cottages: Provides stable water supply from wells for domestic needs.

Irrigation systems: Excellent for water supply tasks in gardens, vegetable gardens, greenhouses, and farms.

Increasing pressure in water supply systems: Used to increase pressure in local and centralized networks.

Operation as part of pumping stations: The hydraulic section can be used as part of automated pressure maintenance systems.

Fire fighting water supply systems: Thanks to its stable head and reliability, it can be used in fire fighting circuits.

Advantages of Choosing Pedrollo 4SR1.5-25

✅ High energy efficiency: The optimized hydraulic design reduces the load on the motor and increases the system's efficiency. 

✅ Durability: The design is resistant to abrasive wear, preventing premature failure due to contamination. 

✅ Compatibility with different motor types: Suitable for both oil-filled and water-cooled Pedrollo motors. 

✅ Versatility: The model is suitable for both domestic and professional use. 

✅ Guaranteed quality: Pedrollo is one of the leaders in European pumping equipment, with a focus on reliability and innovation.

The Pedrollo 4SR1.5-25 hydraulic section is the ideal choice for those looking for a reliable and time-tested component for a deep-well pump. It ensures stable water supply, is resistant to contamination, and easily adapts to various operating conditions. It is especially recommended for homeowners, farmers, and systems requiring a constant and uninterrupted flow of clean water.