KSOW Type Mid-Open Volute Single-Stage Double-Suction Centrifugal Pump | Overview of Mid-Open Pumps

The KSOW series pumps are mid‑open volute‑type, single‑stage, double‑suction centrifugal pumps. Developed by our company in response to market demand and based on the introduction of advanced foreign technologies, these pumps feature prototype and modified impellers, along with optimized impeller trimming. With a comprehensive and broad performance range, they deliver high efficiency and can meet diverse user requirements by providing pump operating points that precisely match any desired flow rate and head within their rated performance envelope.

The KSOW series employs state-of-the-art hydraulic models—both domestically and internationally—that effectively self‑balance axial and radial forces. It offers stable performance, high efficiency, a compact design, low vibration, high pressure resistance in the pump casing, and convenient installation and maintenance.

KSOW-type mid‑open volute single‑stage double‑suction centrifugal pump | Features of mid‑open pumps

1. Integrated Sealed Lubrication System: The TPOW series pumps feature an integrated sealed lubrication system, ensuring that the sealing circulation water provides more direct and effective lubrication and flushing for the pump’s sealing system.

2. Externally elegant: The pump features a streamlined, linear design with reinforcing ribs on the pump cover, while its integrated sealing and lubrication system ensures a seamless, unified structure. Its flexible structural design further enhances its refined and sophisticated appearance.

3. High Efficiency: Utilizing CFD (Computational Fluid Dynamics), we analyze and calculate the pressure and velocity distributions within the pump, optimizing the flow passage design to ensure an efficient hydraulic profile and thereby enhancing overall pump efficiency. Most pump casings feature a dual‑channel design to minimize radial forces. The pump casing, cover, impeller, and other wetted components are manufactured using resin‑bonded sand molds, ensuring superior appearance, precise flow‑path dimensions, and optimal hydraulic performance. The TPOW series pumps deliver 3–5% higher efficiency compared to conventional double‑suction pumps.

4. High balancing accuracy: The rotor assembly achieves a dynamic balancing accuracy of G1.0.

5. Shaft: The shaft is short and highly rigid; its diameter has been increased to extend the service life of the bearings and mechanical seals. The shaft features a fully sealed design, ensuring no contact with the process fluid, resistance to corrosion, and long service life.

6. Double Volute: High-head pumps employ a double-volute design to reduce radial forces.

KSOW Type Mid-Open Volute Single-Stage Double-Suction Centrifugal Pump | Application Scope of Mid-Open Pumps

Suitable for applications involving the conveyance of liquids in municipal water treatment plants, irrigation systems, drainage pumping stations, power stations, air-conditioning recirculation systems, industrial water supply systems, fire‑fighting systems, the marine industry, oil refining facilities, and mining operations.

KSOW Type Mid-Open Volute Single-Stage Double-Suction Centrifugal Pump | Technical Specifications of Mid-Open Pumps

Flow rate: 60–11,600 (m³/h)

Head: 8–200 m

Rotational speed: 730–2900 r/min

Caliber: Φ80–Φ800 (mm)

Motor power: 4–2500 kW

Voltage: 380V, 660V, 6kV, 10kV

Temperature range: ≤105℃

Working pressure: ≤2.5 MPa

KSOW Type Mid-Open Volute Single-Stage Double-Suction Centrifugal Pump | Meaning of Mid-Open Pump Model Designations

KSOW 300 - 450 (I) A

KSOW – Volute-type Double-Suction Centrifugal Pump

300 – Pump discharge outlet diameter (mm)

450 – Impeller nominal diameter (mm)

I – Traffic Classification

A – Impeller subjected to its first cutting operation