Energy saving in submersible electropumps: why precision-cast stainless steel makes the difference

Energy saving in water lifting and supply systems begins well before the electropump is first turned on. The choice between a cast iron submersible electropump and a precision-cast stainless steel submersible electropump directly affects hydraulic efficiency, electricity consumption, and the continuity of the system's operation.

In the deep drilling and well sector, where submersible pumps often work continuously and in harsh conditions, the material of the pump body is not a detail: it determines how much energy will be absorbed daily to guarantee the same flow rate and head.

Precision-cast stainless steel vs. cast iron: real impact on electropump efficiency and consumption

The operation of a submersible electropump is governed by clear principles of fluid dynamics: the smoother and more regular the internal path, the lower the pressure losses and friction that the water encounters along the passage.

Cast iron electropumps have naturally rough and porous internal surfaces. This characteristic, especially over time, tends to generate:

• Greater flow turbulence.
• Higher pressure losses along the pump body.
• Increased motor absorption and higher kWh consumption to maintain the required flow rate and head.

Conversely, precision-cast stainless steel electropumps offer much smoother and more regular internal surfaces. Water flows more harmoniously, with a significant reduction in internal friction and resistance. The result is lower energy absorption for the same operating point.

FB electropumps in precision-cast stainless steel from the FBSX range are designed to ensure high yields and concrete energy savings, thanks to an optimized internal passage and high-efficiency hydraulic components.

Energy saving starts with the choice of the electropump. The FBSX series

The choice of a precision-cast stainless steel electropump over a cast iron one therefore represents a concrete lever for energy saving. The greater hydraulic efficiency, combined with resistance to corrosion and wear, makes it possible to reduce consumption, limit operating costs, and ensure continuity of service in water lifting systems.

FB's approach to consumption reduction is not limited to the simple electrical efficiency of the motor but starts precisely from a complete vision of the electropump + motor system. The real energy saving is born "upstream," in the hydraulic design and the choice of materials.

The FBSX series represents the synthesis of the FB strategy focused on energy saving in submersible electropumps. These pump bodies are entirely made of precision-cast stainless steel, available in AISI 304, AISI 316, and AISI 904L, to cover a wide spectrum of operating conditions.

Key features of FBSX submersible electropumps:

• Sizes 6", 8", 10" and 12".
• Flow rates up to 9500 l/min and heads up to 700 m, depending on the model.
• Industry-leading energy efficiency, with high yields in real operating conditions.
• Materials selected based on water aggressiveness (drinking, brackish, seawater, thermal, corrosive).

These features make the FBSX series particularly suitable for:

• Water supply systems from deep wells.
• Intensive agricultural irrigation systems.
• Industrial and mining applications with continuous cycles.
• Desalination and reverse osmosis.

To configure the most suitable model based on flow rate, head, and water characteristics, the Selector available on fbpompe.com supports the choice of the most energy-efficient FB submersible electropump.