The split-case double-suction pump is a highly efficient centrifugal pump characterized by: a double-suction impeller design consisting of two back-to-back impellers, equivalent to parallel operation of single-suction impellers, doubling flow rates under identical impeller diameters; a horizontally split casing along the axis enabling maintenance without pipeline disassembly; a symmetrical impeller structure eliminating axial thrust and ensuring low vibration/noise through balanced vane design; and a compact layout with inlet/outlet ports perpendicular to the pump shaft on the same horizontal plane for simplified piping installation. Its advantages include: high-flow (up to thousands of m³/h) and medium-to-high head capabilities for water, wastewater, and industrial fluids; 10%-15% higher energy efficiency than standard centrifugal pumps through optimized flow channels; corrosion-resistant stainless steel construction for media below 80°C (200°C in special models) and 8,000+ hour bearing lifespan; and low maintenance costs via quick-access horizontal casing and mechanical seals minimizing leakage
Application purpose
Applications span municipal engineering (water supply, sewage treatment, flood control), industrial systems (power plant cooling, chemical corrosive fluid transfer, metallurgical high-temperature circulation), agricultural/water conservancy projects (large-scale irrigation, reservoir transfer), and firefighting/emergency systems (high-rise building water supply, ship ballast operations). Its integrated performance makes it the preferred solution for high-flow, stability-critical scenarios.
PUMP SPECS
| TYPE | FLOW(m3/h) | HEAD(m) | SPEED(rpm) | POWER（kw） |
| SOW80 | 58~194 | 12~90 | 1450~2900 | 2.2~90 |
| SOW100 | 94~367 | 11~123 | 1450~2900 | 11~200 |
| SOW125 | 173~535 | 9.1~166 | 1450~2900 | 11~220 |
| SOW150 | 300~580 | 11.5~135 | 1450 | 22~315 |
| SOW200 | 500~810 | 17~200 | 1450 | 37~710 |
| SOW250 | 800~1240 | 22~~186 | 1450 | 75~1000 |
| SOW300 | 700~1680 | 11.5~156 | 1450 | 37~1250 |
| SOW350 | 1180~2650 | 17.8~195 | 1450 | 90~2000 |
| SOW400 | 1768~3500 | 45~138 | 1450 | 315~1800 |
| SOW500 | 1600~4000 | 7.7~150 | 730~980 | 75~2000 |