What are the design advantages of two-stage double suction pumps?

They combine hydraulic axial balancing with high-head capabilities. The first stage ensures excellent suction (low NPSH), while the second stage provides the necessary pressure for high-head applications.

What are the primary applications for these high-pressure units?

Primary applications include water trunk pipelines, pressure maintenance in oil fields, fire protection in high-rise buildings, and industrial boiler feed systems.

Why is the split-case design beneficial for two-stage pumps?

The axially split-case allows for maintenance of the rotor and bearings without dismantling the main pipelines, saving significant time and maintenance costs.

How can I get a technical selection for a two-stage pump from Ekvives?

Contact our engineering team with your specific flow and head requirements. Ekvives provides professional selection for your duty point along with official warranties and support.

Two-stage double-entry pump units

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PDD150-570X2 two-stage double-entry pump unit

Type of pump unit: double-stage double-entry; Appointment: Призначений для перекачування великих обсягів рідин, за щільністю близьких до води, під високим тиском у важких промислових умовах, забезпечуючи високу надійність та легкість обслуговування; Voltage, V: 6000; Frequency, Hz: 50; Max Head, m: 260; Max Productivity, m3/h: 700; Engine power, kW: 450

Two-stage centrifugal pump with double suction: Reliability and Power for Industrial ApplicationsInt..

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FAQ: Two-Stage Double Suction Pump Units

These pumps combine the benefits of double suction (hydraulic balancing of axial forces) with two-stage compression. The first impeller features a double-inlet design for superior suction capability and lower NPSH, while the second stage allows the unit to reach significantly higher heads compared to single-stage models, all while maintaining high flow rates.

Two-stage double suction units are essential for projects requiring high pressure over long distances or elevations. They are typically used in trunk water pipelines, oil field water injection (pressure maintenance), high-rise fire protection systems, and as feed pumps for medium-pressure industrial boilers.

The axially split-case design allows for easy inspection and maintenance of the rotor and internal components. Technical teams can perform service or replace parts without disconnecting the suction or discharge piping, significantly reducing downtime and labor costs for large-scale operations.

To ensure the most efficient operation, Ekvives engineers analyze your specific duty point (flow and head requirements), fluid properties, and installation site conditions. We provide energy-efficient configurations with an official warranty and full lifecycle technical support.

Two-Stage Double-Suction Centrifugal Pump Units: Efficiency and Reliability for Industry

Welcome to our category of two-stage double-suction centrifugal pump units — high-tech equipment developed and manufactured by our company. These units are ideally suited for industrial applications requiring high flow and high head, including metallurgical plants, power stations, large water utility pumping stations, and other critical facilities.

Reliability and Advanced Technologies

We integrate advanced expertise in designing two-stage bisected pumps with high-precision manufacturing on specialized machine tools. This ensures that every pump unit in this category meets the highest standards of efficiency, stability, and reliability.

Our pumps are designed for pumping water or water-like liquids across a wide temperature range – from -10 °C to 80 °C. Depending on the model, they can provide flow rates of up to 1600 cubic meters per hour and heads of up to 270 meters. Each unit is equipped with a powerful high-voltage motor (280-1120 kW), ensuring maximum performance.

Innovations for Maximum Efficiency

Optimized Design: The use of double suction on the first stage and single suction on the second stage significantly improves the pumps' anti-cavitation characteristics, reducing their axial dimensions. This ensures stable operation without excessive vibrations at a rotation speed of 1480 rpm.
Reduced Radial Force: The pump casing features a double volute design, which effectively reduces radial force and extends the equipment's service life.
World-Class Engineering: Each pump is designed using international leading hydromechanical software, undergoes 3DM modeling, and strength verification using finite element analysis software. This guarantees high efficiency, stability, and reliability in the most challenging conditions.

Ease of Maintenance and Durability

We understand the importance of simple operation and maintenance. Therefore, our pumps offer the following advantages:

Convenient Access: Water inlet and outlet are integrated into the pump casing. For major overhaul, you simply need to lift the pump cover, which significantly facilitates maintenance.
Reliable Bearings: The use of rolling bearings and the option of lubrication with grease or oil simplifies their upkeep.
Flawless Sealing: A fully mechanical seal ensures no leakage for 8000 hours. Gland packing sealing can also be customized for specific needs.
Application Flexibility: Standard pump rotation is clockwise, but counter-clockwise rotation can be customized upon request.

By choosing our two-stage double-suction centrifugal pump units, you get a powerful, reliable, and efficient solution that will meet the highest demands of your production.

Would you like to learn more about specific models or customization options?

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