Pedrollo 6SR12 / 25-PD submersible apple

For tackling the most ambitious water supply challenges from extremely deep wells, where maximum head, immense pumped water volume, and absolute reliability are required, we present the Pedrollo 6SR12/25-PD submersible pump. This most powerful multi-stage centrifugal electric pump is designed for continuous submerged operation, providing record efficiency and unparalleled durability. It is the ideal choice for the largest industrial enterprises, municipal waterworks, large-scale agricultural complexes, and critical facilities where a guaranteed and stable water flow is necessary under any, even the most extreme conditions, including high-performance irrigation and fire safety systems.

Engineering Solutions and Operating Principle:

The pumps of the 6SR12 series, of which the Pedrollo 6SR12/25-PD is the pinnacle, operate on the principle of multi-stage centrifugal pumps. Liquid sequentially passes through numerous impellers, each rotating on a single drive shaft inside its guide vane diffuser. This process ensures a sequential increase in fluid pressure: upon exiting each impeller, it is directed to the suction port of the next stage. The summation of pressure differentials at each of the many stages allows for achieving maximum head and flow rate indicators, which are critically important for the most demanding systems. The motor connects to the pump via a bracket whose parameters comply with strict NEMA standards, guaranteeing an absolutely robust, reliable, and sealed connection capable of withstanding extreme operational loads.

Operating Conditions and Installation:

The Pedrollo 6SR12/25-PD pump is designed for operation in wells with a minimum diameter of 6 inches (152 mm) and is capable of pumping clean water with a sand content of no more than 100 g/m³. This characteristic highlights its specialization in working with clean sources, minimizing the risk of abrasive wear. For safe and efficient operation, the electric pump must be lowered into the well via the discharge pipeline to a depth where it is fully submerged. It is important that even during operation, when the liquid level in the well may drop, the pump remains fully submerged (minimum 50 cm from the upper water level). Furthermore, to prevent the intake of bottom sediments, the distance to the bottom of the well must be at least 1 meter. As a critically important precautionary measure and to ensure absolutely reliable fixation of the pump in the well, it is highly recommended to use a strong stainless steel or nylon rope, secured through the specially provided holes in the discharge casing.

The Pedrollo 6SR12/25-PD is an uncompromising, high-tech, and extremely powerful piece of equipment, created to provide uninterrupted, efficient, and long-lasting water supply for the most critical, large-scale, and strategic projects.