API Pump Product
Horizontal segmental multi-stage pump (BB4)
Modular multistage pump for boiler feedwater, reverse osmosis, and high-pressure industrial services.
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Description
Product Overview
This series of pumps adopts modular design and universal components. Standard design includes various hydraulic, bearing, sealing arrangements, and different materials.
The maximum working pressures are 18.0 and 27.0 MPa, respectively. The model with Z is a self balancing multi-stage pump, and the impeller is symmetrically arranged back-to-back, eliminating the traditional balance drum and balance disc design.
This arrangement is more suitable for conveying media containing particles, while bearings can adopt self-lubricating or forced lubrication structures based on power and speed. Explore the full API 610 pump lineup.
Technical Specifications
Modular hydraulic design, flexible lubrication options, and stable performance for demanding services.
Materials Used
The pump body and overcurrent components are made of high-strength steel or stainless steel, and the seals are made of high-quality mechanical seals.
Scope of Applications
Used for boiler feedwater, reverse osmosis, and other industrial high-pressure applications. See our industrial applications guide.
Why Choose FEIYUE
Why Choose Feiyue
Since 1957, Jiangsu Feiyue has manufactured industrial pumps for refinery, petrochemical, chemical processing and utility projects worldwide. We provide complete solutions from R&D and casting through machining, assembly and quality control — helping customers achieve reliable operation and lower lifecycle costs.
Our API 610 pump portfolio includes OH2 pump, BB1 pump, BB2 pump, BB3 pump and BB5 pump designs for demanding process services. Certified to ISO 9001, ISO 14001, OHSAS 18001, API and CE, with TÜV factory inspection approval.
FEIYUE pumps are trusted across general water, power generation, petrochemical industry, chemical processing industry, mining, oil and gas, and seawater treatment applications. Materials include carbon steel, stainless steel, duplex stainless steel, titanium, Hastelloy and specialty alloys for corrosive and high-temperature duties.
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What can we do for you?
Whether you are looking to purchase products or need professional advice from experts in Feiyue Pump Industry, we are more than happy to provide technical support for pump solutions.
Want to learn more about product specifications and application scenarios? Please send us your requirements, and our engineers will provide a professional solution within 12 hours.
Do you have any questions about after-sales service? Feel free to contact our engineering team for detailed answers and professional technical support.
Project Support
Discuss your BB4 multistage pump requirements
Tell us your medium, temperature, flow rate, head, material requirement, and operating conditions. Our engineering team can recommend a suitable pump specification for your project. For high-temperature duties, see our high temperature pumps. Browse all API pumps or request a quote.

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