Submersible pump Pedrollo 4SR8-42

The hydraulic section of a pump is a multi-stage module where water is drawn from depth, pressure is generated, and the fluid is moved through the pipeline. The performance and reliability of the pump depend precisely on the quality and design of this section. The Pedrollo 4SR8-42 model is designed for operation in the most demanding conditions, where high water delivery under significant head is required. It is an ideal choice for the agricultural sector, industrial facilities, municipal water intakes, and fire suppression systems.

Engineering Features and Design of Pedrollo 4SR8-42

The 4SR8 series consists of powerful hydraulic sections with increased flow rates. And the 4SR8-42 model, equipped with 42 working stages, is among the highest-head models in this family. This design allows for lifting water from depths of up to 200 meters while maintaining stable flow and resistance to contamination.

Key design elements: 

✅ 42 multi-stage impellers made of technopolymer with fiberglass reinforcement – high wear resistance and durability. 

✅ Specially geometrically shaped diffusers, reducing hydraulic losses and increasing efficiency. 

✅ Stainless steel shaft and reinforced bearing supports ensure stable operation at great depths and high pressure. 

✅ Patented anti-sand insert, preventing solid particles from entering moving elements (up to 150 g/m³ of permissible impurities).

✅ Balanced modular design, which simplifies maintenance and repair.

Technical Specifications

Number of stages: 42.

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

Submersion depth:

up to 200 m with 4PD motor,

up to 100 m with 4PS motor.

Water temperature: up to +35°C.

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

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

Compatibility with motors: Pedrollo 4PD (oil-filled) and 4PS (water-cooled).

Areas of Application for Pedrollo 4SR8-42

The 4SR8-42 model is ideally suited for cases where it is important to ensure maximum head and stable flow over a long period: 

✅ Deep-well water supply systems in industry and on agricultural farms. 

✅ Municipal and communal water intakes, reservoirs, water towers. 

✅ High-rise buildings, residential complexes, and public facilities requiring high water delivery to upper levels. 

✅ Irrigation installations, including drip, sprinkler, and spray irrigation. 

✅ Fire suppression systems – as a main or backup high-pressure pump.

Advantages of the Pedrollo 4SR8-42 Model

Maximum head in the 4SR8 series – ideal for water delivery from depth and to height.

Reliability when working with contaminated water – the design is resistant to sand inclusions.

Energy efficiency and minimal losses – optimized hydrodynamics and precise assembly.

Long service life – high-quality materials and proven Italian engineering.

Flexibility in application – suitable for both constant water supply and emergency systems.

The Pedrollo 4SR8-42 is a powerful hydraulic section for those seeking maximum performance and reliability in deep-well conditions and high water demand. Thanks to its well-thought-out design, established brand reputation, and resistance to contamination, this model becomes an ideal solution for the agricultural sector, industry, and facilities with increased operational requirements. This is a professional level of water supply, created for many years of service.