Large Capacity Double Suction Split Case Centrifugal Pump for Municipal Drainage

BB4 pumps are widely applied in high-pressure continuous process industries, including petroleum refining, petrochemical processing, chemical plant medium delivery, power plant auxiliary systems, boiler feed water circulation, industrial high-pressure water supply and process fluid pressurization. It is especially suitable for working conditions requiring stable high-head pressurization and long-term non-stop operation.

Firstly, the radial split casing structure of BB4 pump has far higher pressure-bearing limit than ordinary end-suction and axial split pumps. Secondly, the optimized high-head hydraulic impeller and volute structure converts more kinetic energy into pressure energy with low hydraulic loss. In addition, the high-rigidity between-bearing rotor system avoids performance attenuation caused by shaft deformation under high pressure, ensuring stable high-head output.

BB4 pump features modular and standardized design for easy maintenance. Although its radial split structure requires pipeline disassembly during integral rotor maintenance, all wearing parts (shaft sleeve, wear ring, mechanical seal) are universal and standardized. The independent bearing and sealing structures support separate replacement and maintenance, with simple operation and low maintenance difficulty and cost for daily routine upkeep.

The high reliability comes from three core designs. First, the API 610 heavy-duty mechanical design ensures structural safety margin for high-pressure operation. Second, the between-bearing rotor structure effectively reduces vibration and shaft load. Third, the optimized hydraulic structure avoids cavitation, turbulence and local overload. All designs are verified for long-period continuous operation, greatly reducing equipment failure probability.

Yes. The BB4 pump has a robust pressure-resistant casing structure and a wide efficient operating range. It can resist instantaneous system pressure impact and maintain stable hydraulic performance when pipeline pressure and flow fluctuate within the allowable range. Its low-vibration rotor design ensures no abnormal noise, vibration or efficiency drop during variable-pressure operation, adapting to complex fluctuating process working conditions.