Product Overview of S and SH Type Single-Stage Double-Suction Mid-Open Centrifugal Pumps

The S and SH series single-stage, double-suction, mid‑open centrifugal pumps are a new generation of energy‑efficient horizontal mid‑open pumps. They consist primarily of a pump casing, pump cover, shaft, impeller, sealing ring, shaft sleeve, and bearing assembly. Both the suction and discharge ports are located below the pump’s centerline; during maintenance, simply removing the pump cover allows all components to be disassembled for servicing. These pumps are designed to convey clean water or other liquids with physicochemical properties similar to water. Upon customer request, modifications to the pump’s design and materials enable them to handle highly silt‑laden water or various corrosive fluids. Their performance complies with the JB/T 1050‑93 standard “Types and Basic Parameters of Single‑ and Double‑Suction Clean Water Centrifugal Pumps.” Featuring stable operation, high efficiency, and energy savings, these pumps offer a broad range of applications and are well suited for industrial plants, mines, municipal water supply and drainage systems, power stations, agricultural irrigation, and diverse hydraulic engineering projects.

Application Scope of S and SH Type Single-Stage Double-Suction Mid-Open Centrifugal Pumps

Suitable for factories, mines, urban water supply systems, power plants, municipal waterworks, agricultural irrigation, and various hydraulic engineering projects.

S and SH Type Single-Stage Double-Suction Mid-Open Centrifugal Pumps: Performance and Advantages

1. Compact structure, aesthetically pleasing appearance, smooth operation, and low noise;

2. Both the pump’s suction inlet and discharge outlet are located below the pump shaft centerline, oriented horizontally perpendicular to the shaft axis. This design facilitates maintenance, eliminating the need to disconnect the suction and discharge piping or the motor, while delivering high efficiency, energy savings, and a broad range of applications.

3. The pump shaft seal is available in two configurations: a high-quality mechanical seal and a soft packing seal, allowing users to select the appropriate option for different operating conditions.

4. The impeller, which has undergone static balancing verification, is secured to the pump shaft with a lock nut, and its axial position can be adjusted by means of this lock nut.

5. The pump is driven directly by an electric motor via an elastic coupling; when necessary, it may also be driven by an internal-combustion engine.

6. Viewed from the drive end, the pump rotates in a clockwise direction (it can also be configured for counterclockwise rotation upon customer request).

Technical Parameters of S and SH Type Single-Stage Double-Suction Mid-Open Centrifugal Pumps

Flow rate: 80–3,170 (m³/h)

Lift: 19–130 m

Rotational Speed: 1450–2900 r/min

Diameter: Φ100–Φ600 (mm)

Temperature range: ≤0~+80℃

Working pressure: ≤1.6 MPa

Meaning of the Model Designation for S and SH Type Single-Stage Double-Suction Mid-Open Centrifugal Pumps

For example: 300 S 90 A

300 – Suction inlet diameter (mm)

S – Single-stage double-suction centrifugal pump

90 – Design Head (m)

A – Impeller subjected to its first cutting operation