Question 1

Standard delivery lead time?

Accepted Answer

Standard cast iron/carbon steel common size: 30~35 working days; stainless steel & custom high-alloy model: 50~70 working days; bulk order negotiable for shorter schedule.

Question 2

Warranty period?

Accepted Answer

Standard 12-month after on-site commissioning or 18 months ex-factory (whichever comes first); critical spare parts (mechanical seal, bearing) follow separate warranty clause.

Question 3

Typical BB1 application industries?

Accepted Answer

Refinery CDU/FCC crude transfer, crude/product pipeline booster, power plant cooling circulation, desalination, large waterworks, tank farm loading/unloading, fire water pump, chemical reflux circulation.

Question 4

Drive options besides electric motor?

Accepted Answer

Steam turbine, diesel engine, gear reducer drive available per client site power condition.

Question 5

Is ATEX certification available for hazardous zone?

Accepted Answer

Yes, ATEX Ex d/Ex e motor & full pump set certification for Zone1/Zone2 explosive oil & gas site on request.

Question 6

Working temperature range of BB1 pump?

Accepted Answer

Standard carbon steel: -40 ~ +180 Celsius degree; special high-temp alloy trim available up to 400Celsius degree; cryogenic option down to -100Celsius degree for LPG & cold hydrocarbon.

Question 7

What's BB1 efficiency level?

Accepted Answer

Best efficiency point (BEP): 78%~88%, double suction hydraulic design improves overall efficiency 3~4% vs conventional split casing pumpBaker Hughes.

Question 8

What is BB1 max flow capacity?

Accepted Answer

Standard BB1 single-stage axially split pump: normal range 20 ~15,000 m3/h, customized large-size model up to 40,000 m3/h; double suction impeller version covers ultra-high flow for pipeline & circulating water service

Question 9

What is BB1 maximum head?

Accepted Answer

Standard single-stage BB1 max head 150~200 m; 2-stage BB1 design can reach up to 350 m, max casing design pressure up to 34 bar (3.4 MPa).

Question 10

What working conditions and industries is the BB1 pump suitable for?

Accepted Answer

BB1 pump is mainly applicable to large-flow, medium-high pressure continuous fluid transmission scenarios. It is widely used in power generation plant water supply, petrochemical medium transportation, urban municipal water supply and drainage, district heating, industrial circulating water systems, fire-fighting water supply and flood control drainage, adapting to various non-corrosive and weakly corrosive low-viscosity fluid transportation.

Question 11

Why is the maintenance efficiency of BB1 pump higher than other pump types?

Accepted Answer

Thanks to the axial split casing design, users can directly open the upper pump casing to inspect, repair or replace internal rotors, seals and wear parts without dismantling inlet and outlet pipelines or moving the motor. This design greatly shortens maintenance time, reduces equipment downtime, and avoids pipeline misalignment and leakage risks caused by repeated disassembly and assembly.

Question 12

How does the BB1 pump achieve energy-saving operation?

Accepted Answer

Firstly, the CFD-optimized hydraulic flow channel reduces fluid turbulence and transmission resistance loss. Secondly, the double-suction impeller balance design reduces mechanical friction and bearing load. In addition, its efficient working range covers most conventional operating conditions, ensuring the pump runs near the best efficiency point for a long time, effectively reducing power consumption and improving comprehensive energy efficiency.

Question 13

What causes low NPSHr of BB1 pump and what is the benefit?

Accepted Answer

The low NPSHr is derived from the optimized double-suction impeller and streamlined suction flow channel design, which ensures smooth fluid inflow and avoids local pressure drop. The core benefit is effective prevention of pump cavitation, eliminating cavitation vibration, noise and impeller damage, ensuring stable and efficient operation of the pump under low suction pressure working conditions.

Question 14

Can BB1 pump operate stably under variable load conditions?

Accepted Answer

Yes. The pump has a wide efficient operating range, and can maintain stable hydraulic performance and high efficiency when the flow and load fluctuate within 80%-110% of the best efficiency point. Its balanced force structure and stable rotor design ensure no obvious vibration, pressure fluctuation or efficiency drop during variable load operation, adapting to fluctuating industrial working conditions.

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