Audited Supplier
BL series marine
Provide 24 - Hour Online Technical Support
Free Maintenance Within One Year
50-80m
>400 L/min
Motor
Single-Stage Pump
Middle Pressure Pump
Single Suction Pump
Horizontal Pump
Horizontal Split Pumps
Since Irrigation Centrifugal Pumps
Closed
Pump, Pumps
10-250
16-32
2900
380V
Cagon
Wooden Case Packaging
China
8413709990
Product Description
BL series marine horizontal centrifugal pump
The BL Series marine horizontal centrifugal pumps are suitable for fire control, cooling, and sanitation applications. They are used in various industries, city water supply and drainage, as well as agricultural and orchard irrigation
Main technical parameter
performance parameters when power frequency is50Hz
Brief Introduction to Antirust Material Spray Painting Technology
Factory seawater simulation test:
Two 50cL - 30 marine vertical centrifugal pumps were used for the contrast test. The base material of their main parts was the same (cast silicon brass, ZCuZn16Si4). One pump's body, cover, impeller, and gland were treated with KsF severe - corrosion - protection spraying (average coating thickness 0.45mm), and the other was not. The test medium was simulated seawater (11.62kg sea salt added to 0.33m³ fresh water, weight ratio 3.52%). The unpainted pump started the test on September 14, 2004, and the painted one on October 14, 2004, with continuous 24 - hour operation required.
The two pumps were disassembled for the first check on December 2, 2004, reassembled, and continued the test. On March 7, 2005, By then, the unpainted pump had run for 4000h and the painted one for 3380h. The inspection results were as follows:
picture of body, cover and impeller of the painted pump after test
picture of body, cover and impeller of the unpainted pump after test
Test machine ensure high quality goods
The BL Series marine horizontal centrifugal pumps are suitable for fire control, cooling, and sanitation applications. They are used in various industries, city water supply and drainage, as well as agricultural and orchard irrigation
Main technical parameter
performance parameters when power frequency is50Hz
Type | (50Hz) Main technical parameter | Motor type & power kw | Remarks | |||||
| capacity m3/h | Head m | speed r/min | m | shaft power kw | ||||
| 1BL-3D | 1.5 | 25 | 2810 | Y801-2H | 0.75 | |||
11/2BL-6 | 6 | 20.3 | 2900 | 6.6 | 0.745 | Y90s-2H | 1.5 | 44 |
| 11 | 17.4 | 6.7 | 0.923 | |||||
| 14 | 14 | 6.0 | 1.01 | |||||
11/2BL-6A | 5 | 16 | 2900 | 6.5 | 0.578 | Y90s-2H | 1.5 | |
| 9.5 | 14.2 | 6.9 | 0.713 | |||||
| 13.5 | 11.2 | 6.1 | 0.825 | |||||
11/2 BL-6B | 4.5 | 12.8 | 2900 | 6.4 | 0.448 | Y802-2H | 1.1 | |
| 9 | 11.4 | 7.0 | 0.57 | |||||
| 13 | 8.8 | 6.3 | 0.693 | |||||
| 2BL-2 | 2 | 25 | 2900 | Y802-2H | 1.1 | |||
2BL-6 | 10 | 34.5 | 2900 | 8.2 | 1.86 | Y112M-2H | 4 | 80 |
| 20 | 30.8 | 7.2 | 2.61 | |||||
| 30 | 24 | 5.7 | 3.09 | |||||
2BL-6A | 10 | 28.5 | 2900 | 8.2 | 1.43 | Y100L-2H | 3 | |
| 20 | 25.2 | 7.2 | 2.07 | |||||
| 30 | 20 | 5.7 | 2.55 | |||||
11/2BL-6A | 5 | 16 | 2900 | 6.5 | 0.578 | Y90s-2H | 1.5 | |
| 9.5 | 14.2 | 6.9 | 0.713 | |||||
| 13.5 | 11.2 | 6.1 | 0.825 | |||||
11/2 BL-6B | 4.5 | 12.8 | 2900 | 6.4 | 0.448 | Y802-2H | 1.1 | |
| 9 | 11.4 | 7.0 | 0.57 | |||||
| 13 | 8.8 | 6.3 | 0.693 | |||||
2BL-6 | 10 | 34.5 | 2900 | 8.2 | 1.86 | Y112M-2H | 4 | 80 |
| 20 | 30.8 | 7.2 | 2.61 | |||||
| 30 | 24 | 5.7 | 3.09 | |||||
2BL-6A | 10 | 28.5 | 2900 | 8.2 | 1.43 | Y100L-2H | 3 | |
| 20 | 25.2 | 7.2 | 2.07 | |||||
| 30 | 20 | 5.7 | 2.55 | |||||
2BL-6B | 10 | 22 | 2900 | 8.2 | 1.10 | Y90L-2H | 2.2 | |
| 20 | 18.8 | 7.2 | 1.57 | |||||
| 25 | 16.3 | 6.6 | 1.73 | |||||
2BL-9 | 11 | 21 | 2900 | 8.0 | 1.12 | Y90L-2H | 2.2 | |
| 20 | 18.5 | 6.8 | 1.47 | |||||
| 25 | 16 | 6.0 | 1.66 | |||||
2BL-9A | 10 | 16.8 | 2900 | 8.1 | 0.85 | Y90L-2H | 2.2 | |
| 17 | 15 | 7.3 | 1.06 | |||||
| 22 | 13 | 6.5 | 1.23 | |||||
2BL-9B | 10 | 13 | 2900 | 8.1 | 0.70 | Y90s-2H | 1.5 | 46 |
| 15 | 12 | 7.6 | 0.82 | |||||
| 20 | 10.3 | 9.8 | 0.91 | |||||
Type | (50Hz) Main technical parameter | Motor type & power kw | Remarks | |||||
| capacity m3/h | Head m | Speed r/min | m | Shaft power kw | ||||
3BL-6 | 30 | 62 | 2950 | 7.7 | 9.3 | Y160M2-2H | 15 | |
| 45 | 67 | 6.7 | 11.0 | |||||
| 60 | 50 | 5.6 | 12.3 | |||||
| 70 | 44.5 | 4.7 | 13.3 | |||||
3BL-6A | 30 | 45 | 2950 | 7.5 | 6.65 | Y160M1-2H | 11 | |
| 40 | 41.5 | 7.1 | 7.30 | |||||
| 50 | 37.5 | 6.4 | 7.98 | |||||
| 60 | 30 | 8.80 | ||||||
3BL-9 | 30 | 35.5 | 2900 | 7.0 | 4.66 | Y132S2-2H | 7.5 | |
| 45 | 32.6 | 5.0 | 5.56 | |||||
| 55 | 28.8 | 3.0 | 6.32 | |||||
3BL-9A | 25 | 26.2 | 2900 | 7.0 | 2.83 | Y132S1-2H | 5.5 | |
| 35 | 25 | 6.4 | 3.35 | |||||
| 45 | 22.5 | 5.0 | 3.87 | |||||
3BL-13 | 32.5 | 21.5 | 2900 | 6.5 | 2.5 | Y112M-2H | 4 | |
| 45.0 | 18.8 | 5.5 | 2.88 | |||||
| 52.2 | 15.6 | 5.0 | 2.96 | |||||
3BL-13A | 29.5 | 17.4 | 2900 | 6.0 | 1.86 | Y100L-2H | 3 | |
| 39.6 | 15.0 | 5.0 | 2.02 | |||||
| 48.6 | 12.0 | 4.5 | 2.15 | |||||
3BL-13B | 28.0 | 13.5 | 2900 | 5.5 | 1.63 | Y90L-2H | 2.2 | |
| 34.2 | 12.0 | 5.0 | 1.72 | |||||
| 41.5 | 9.5 | 4.0 | 1.73 | |||||
4BL-12 | 65 | 37.7 | 2950 | 6.7 | 9.25 | Y160M2-2H | 15 | |
| 90 | 34.6 | 5.8 | 10.8 | |||||
| 120 | 28 | 3.3 | 12.3 | |||||
4BL-12A | 60 | 31.6 | 2950 | 6.9 | 7.4 | Y160M1-2H | 11 | |
| 85 | 28.6 | 6.0 | 8.7 | |||||
| 110 | 23.3 | 4.5 | 9.5 | |||||
4BL-18 | 65 | 22.6 | 2950 | 5.32 | Y160M1-2H | 11 | ||
| 90 | 20 | 5 | 6.28 | |||||
| 110 | 17.1 | 6.93 | ||||||
4BL-18A | 60 | 17.2 | 2900 | 3.80 | Y132S1-2H | 5.5 | ||
| 80 | 15.2 | 5 | 4.35 | |||||
| 95 | 13.2 | 4.80 | ||||||
4BL-25 | 54 | 17.6 | 2900 | 3.69 | Y132S1-2H | 5.5 | ||
| 79 | 14.8 | 5 | 4.10 | |||||
| 99 | 10 | 4.02 | ||||||
4BL-25A | 50 | 14 | 2900 | 2.80 | Y112M-2H | 4 | ||
| 72 | 11 | 5 | 2.87 | |||||
| 86 | 8.5 | 2.78 | ||||||
Type | (50Hz) Main technical parameter | Motor type & power kw | Remarks | |||||
| capacity m3/h | Head m | Speed r/min | m | Shaft power kw | ||||
4BL-18 | 65 | 22.6 | 2950 | 5.32 | Y160M1-2H | 11 | ||
| 90 | 20 | 5 | 6.28 | |||||
| 110 | 17.1 | 6.93 | ||||||
4BL-18A | 60 | 17.2 | 2900 | 3.80 | Y132S1-2H | 5.5 | ||
| 80 | 15.2 | 5 | 4.35 | |||||
| 95 | 13.2 | 4.80 | ||||||
4BL-25 | 54 | 17.6 | 2900 | 3.69 | Y132S1-2H | 5.5 | ||
| 79 | 14.8 | 5 | 4.10 | |||||
| 99 | 10 | 4.02 | ||||||
4BL-25A | 50 | 14 | 2900 | 2.80 | Y112M-2H | 4 | ||
| 72 | 11 | 5 | 2.87 | |||||
| 86 | 8.5 | 2.78 | ||||||
Characteristics of the protective coating formed by this technology
- Excellent adhesion between the coating and the metal substrate.
- Wide applicable temperature range.
- Good cathodic disbondment resistance, free of the "cathode screening" effect.
- Stable electrical insulation to reduce cathodic protection current.
- Resistant to chemical media corrosion, with good resistance to Cl
- Similar thermal expansion coefficients of the coating and the steel structure, with good resistance to thermal changes.
- The coating is easy to repair.
Main performance indices of this technology
- Peak performance of the KsF series coatings: bond strength 100MPa, impact strength > 23J, anti - penetration property at 60ºC (within one year) with the coating resistance remaining constant.
- Long - distance pipelines can be coated both inside and outside simultaneously, with performance meeting the national anti - corrosion coating standards for fusion - bonded epoxy powder coatings or SY/T0315 - 97 Technical Standard of Fusion Bond Epoxy Coating for Steel Pipeline.
- Bends of long - distance pipelines can be coated both inside and outside simultaneously, with performance meeting the national anti - corrosion coating standards for fusion - bonded epoxy powder coatings or Q/Fs.J02.15 - 1996 enterprise standard.
- The drag - reduction coating performance for long - distance pipelines meets the US standard APIRP5L2.
- The field joint coating performance for long - distance pipelines meets the national anti - corrosion coating standards for fusion - bonded epoxy powder coatings.
Application fields of this technology
- Products for severe corrosion protection, such as high - efficiency corrosion - resistant pumps, wear - resistant pumps, high - efficiency corrosion - resistant fans, corrosion - resistant valves, corrosion - resistant bellows compensators, and seawater filters.
- Severe corrosion protection for long - distance pipelines of oil, gas, and water.
- Severe corrosion protection for metal process pipelines of acids, alkalis, and salts.
- Severe corrosion protection for equipment and structural parts in the chemical engineering and energy industries.
- Severe corrosion protection for materials in ocean engineering.
Application examples of this technology
- Qinshan Nuclear Power Station
- Primary loop seawater pump: 20SHF - 19 seawater pump, flow rate 1400m³/h, head 23m, speed 978r/min, 4 sets.
- Seawater booster pump: 14SH - 90 - 19 seawater pump, speed 1450r/min, 3 sets.
- Underground seawater pipeline: 4 φ1400 pipelines, about 30m.
- Bellows expansion joint: 8 units, φ1400×1.2m.
- Seawater cooling pipe in the steam turbine building: seawater booster pump outlet pipe φ600×12m and tees, tee joints of φ325 - φ525mm, totally 260m.
- Shenyang Automation Research Institute, Chinese Academy of Sciences
Key parts of the underwater robot developed by the institute, such as underwater motors, underwater manipulator oil cylinders, and underwater tools, adopted the special KsF coating technology and were successfully used on Nanhai drilling platform Exploration 3 of China West Petroleum Company.
Effect of KsF spray - painting anticorrosion technology on marine pumps
Factory seawater simulation test:
Two 50cL - 30 marine vertical centrifugal pumps were used for the contrast test. The base material of their main parts was the same (cast silicon brass, ZCuZn16Si4). One pump's body, cover, impeller, and gland were treated with KsF severe - corrosion - protection spraying (average coating thickness 0.45mm), and the other was not. The test medium was simulated seawater (11.62kg sea salt added to 0.33m³ fresh water, weight ratio 3.52%). The unpainted pump started the test on September 14, 2004, and the painted one on October 14, 2004, with continuous 24 - hour operation required.
The two pumps were disassembled for the first check on December 2, 2004, reassembled, and continued the test. On March 7, 2005, By then, the unpainted pump had run for 4000h and the painted one for 3380h. The inspection results were as follows:
- No mechanical seal leakage, abnormal vibration, or noise occurred during the operation of the two pumps.
- The impeller rings and seal rings of the two pumps had slight normal wear.
- The rubbing surfaces of the mechanical seals of the two pumps had normal wear.
- The coating surface of the painted pump's body, cover, impeller, and gland was smooth and intact, with no seawater corrosion, coating wear, or peeling. In contrast, the surface of the unpainted pump's body, cover, and impeller had corrosion, which was significantly aggravated compared to the first check.
picture of body, cover and impeller of the painted pump after test
picture of body, cover and impeller of the unpainted pump after test
Centrifugal Pump Operation Manual:
1. Fundamental Operating Principle
Centrifugal pumps convert rotational energy from an impeller into kinetic energy, generating centrifugal force to move fluids. Proper selection and operation depend on understanding this hydrodynamic principle and its relationship to pump performance curves.
2. Pump Selection Criteria
Key parameters for centrifugal pump specification include:
Flow Rate (Q) - Required volumetric capacity (m³/h or GPM)
Total Dynamic Head (TDH) - Net pressure differential accounting for static lift, friction losses, and system resistance
Fluid Properties - Viscosity, specific gravity, temperature, and chemical compatibility with wetted materials
Net Positive Suction Head (NPSH) - Critical to prevent cavitation (NPSH> NPSH+ safety margin)
3. Pre-Installation Requirements
Foundation - Rigid mounting base with vibration-damping provisions (grouted sole plates or isolation pads)
Alignment - Laser-aligned shaft coupling within 0.05mm tolerance (per ANSI/HI standards)
Piping -
Suction line: Short, straight runs with eccentric reducers (flat-top orientation)
Discharge: Install check valve and isolation gate valve
Support independent piping loads to prevent nozzle strain
4. Operational Monitoring Protocols
| Parameter | Normal Range | Corrective Action if Deviated |
|---|---|---|
| Discharge Pressure | ±10% of BEP | Check for clogging/valve position |
| Bearing Temp | <70°C (158°F) | Relubricate or replace bearings |
| Vibration Velocity | <4.5 mm/s RMS (ISO 10816) | Verify alignment/impeller balance |
| Current Draw | Within motor nameplate | Assess fluid density/motor condition |
5. Preventive Maintenance Program
Daily:
Inspect mechanical seal/gland packing for leaks
Monitor lube oil levels (oil-lubricated bearings)
Log pump performance metrics
Monthly:
Grease bearings (quantity per OEM specs)
Flush seal chambers on abrasive services
Conduct motor megohm testing
Annual:
Replace wear rings if clearance exceeds 0.5mm
Perform dynamic balancing (ISO 1940 G6.3 standard)
Hydrotest casing at 1.5x design pressure
6. Advanced Troubleshooting Guide
| Symptom | Root Cause | Resolution |
|---|---|---|
| No liquid delivery | Priming failure/NPSH deficiency | Vent air, elevate suction source |
| Excessive noise | Cavitation or bearing failure | Increase NPSH, replace bearings |
| Seal leakage >5 drops/min | Seal face wear or misalignment | Reface/seal replacement, realign |
| Power surge | Impeller blockage | Disassemble and clean flow passages |
Our History
Hangzhou Cagon Transmission Technology Co., Ltd. is well-known in the shipbuilding
field. It is a highly recognized ship power system integrator, top manufacturer and
professional service provider in the industry. In the marine sector, it is a well-deserved
leader in external fire protection and anti-corrosion engineering. Since its inception, the
company has been committed to the passion and determination to deepen its presence
in the shipbuilding industry, anchored on the goal of "one-stop service", and made every
effort to create a power system overall solution that meets the diverse needs of users. At
the same time, it focuses on the cutting-edge needs of marine equipment, ingeniously
develops new anti-corrosion coatings, and uses superb engineering construction skills to
protect the quality of marine equipment in all aspects
OurProduct
| Home | Products | About us | Contact us |
| Marine Gearbox | Marine Pumps | Marine Propellers | Hollow Rotating platform |
| Marine Fire Monitors | Marine Diesel Generator Set | Marine Air Conditioners | Engineering Hydraulic Transmission |
| Marine Couplings | Marine Thrusters | Harmonic Reducer |
OurProduct
OurProductsincludesthefollowing:
MarineTransmission
MarineDieselEngine
Marine/ShipPropellers
Marine/ShipGearBox
MarineFire-FightingPumps
HighPrecisionReducer
BoatEngine&TransmissionRepairs
ShipPowerSystemModifications
SolutionsforMarinePropulsionSystems
TransmissionDeviceforAgriculturalMachinery
TransferCase(ForAutomobiles)
TransferCaseforIndustrialTransmission
ProductApplication
Productuse:
CargoShip,Containerships,BulkCarriers,TankerVessels,ReeferVessels,Offshore
Vessels,PassengerVessels,NavalShips,,FishingVessels,ResearchVessels
Grain-harvestingmachinery,corn-harvestingmachinery,balers,knotters,film-
wrappingmachines,paddy-fieldsprayers,orchardsprayers,etc.Trucks,off-road
vehicles,lorries,constructionvehicles.Engineeringandindustrialfields.
Relevantqualifications
Relevantqualifications
ProductionEquipment
Boxprocessing:
Patentedappearance,beautifulandcompact;
Precisioncastingofresinsandmetalmoldtoensurestrengthandnoleakage;
One-timeclampingandprocessinginthemachiningcenter,usingimportedCNC
machiningcentertoensuremachiningaccuracy;
Double-processprofessionalcleaningandphosphatingequipment,cleaning(removing
ironchips),andrust(corrosion)prevention.
Gearproductionline:
Gears(axles)usepreheatingtreatmentprocess
Usehigh-qualitylow-carbonalloysteelforcarburizingandquenchingtoensure
strength
Useturningcenter,CNChigh-speedgearhobbingmachine,CNCforminggeargrinding
machineforprocessingtoensureaccuracy
Gearsuseproprietaryshapingandnoisereductiontechnology
Usecleaningandphosphatinglineforcleaningandcorrosionprotection
Heattreatmentprocessing:
Pre-heattreatmentprocessisusedtoensurethestabilityofmaterialstructure;
Fullyenclosedheattreatmentmulti-purposefurnaceisusedtoensurehardnessand
strengthandeffectivelycontroldeformation;
Strongshotpeeningtechnologyisusedtoincreasestressandeffectivelyimprovethe
bendingstrengthoftoothrootbymorethan20%
Assemblyline:
Station-typeflexibleassemblyline;
Circularchainspraydryingline;
CNCdoublemeshinginstrumentassemblyfullinspection;
100%onlineproductoperationinspection
Test machine ensure high quality goods
OverallSolutionforShipPropulsionSystem
Shiptype:scientificresearchship
Shiplength:37meters
Shipwidth:7.8meters
Designeddraft:2.0meters
Designedspeed:12knots
Lubricationmethod:Oillubrication
Propulsionmethod:Singleenginesinglepropelleradjustablepropeller
Shipowner:ZhejiangOceanUniversity
Shipyard:QingdaoGeshidaShipbuildingCo.,Ltd.
Shiptypefeatures:Thisshipisascientificresearchship.Thepropellerbladesarespecially
designedaccordingtothedifferentspeedsrequiredbydifferentscientificresearchmodes,
andadvancedHFseriespropellerhubsareused.Forthisproject,weprovideacomplete
setofshippropulsionsystemsincludingmainengine,gearbox,shaftgenerator,high
elasticcoupling,shaftsystemandanalysis,sterntube,adjustablepropeller,remote
controlsystem,hydraulicsystem,etc.
