Sulman MC Series Pumps Description
Sulman MC Series High Pressure Stage Casing Pumps, MC is a variant of the M-series ring-section multistage pump, classified as a BB4-type radially split multistage pump. MC pumps features a modular design and are suitable for medium- to high-pressure liquid transport, The M-series includes MBN, MC, MD, and ME pressure classes. The MC series is the high-pressure version mainly used for boiler feed water, power plants, desalination, and industrial high-pressure water services.
Sulman MC Series Pumps Common Sizes:
| Models | Typical Applications |
| MC 32 | Small high-pressure duties |
| MC 40 | Boiler feed / industrial high-pressure water |
| MC 50 | Medium capacity high-pressure service |
| MC 65 | Industrial and power plant applications |
| MC 80 | Medium-large boiler feed applications |
| MC 100 | Large boiler feed and process water |
| MC 125 | Large capacity high-pressure service |
| MC 150 | Heavy-duty high-flow applications |
| MC 200 | Large custom high-pressure applications |
Sulman MC Pumps Typical Pumping Liquids and Industries:
| Pumping liquids | Description | Typical Duty |
| Boiler Feed Water | Treated, deaerated water supplied to boilers | Boiler feed pumps in power plants |
| Condensate Water | Recovered steam condensate | Power generation and industrial plants |
| Process Water | Clean/recycled industrial water | Mining and manufacturing processes |
| Cooling Water | Fresh water or treated circulation water | Plant cooling systems |
| Mine Dewatering Water | Groundwater, underground mine water | Open pit and underground mines |
| High-Pressure Injection Water | Filtered water under high pressure | Industrial and oil & gas applications |
| Desalinated Water | Fresh water produced from seawater/brackish water | Desalination plants |
| RO Feed Water | Pre-treated seawater or brackish water | Reverse osmosis systems |
| Hot Water | Heated process or utility water | District heating and industrial plants |
| Clean Chemical Solutions | Compatible process liquids | Chemical and industrial applications |
Sulman MC Series Pumps Design Features and Advantages:
1. Horizontal Multistage Ring-Section Design
Features: Multiple impeller stages arranged in series, Ring-section casing construction, Horizontal shaft configuration
Benefits: High-pressure capability, Compact design, Suitable for long-distance/high-lift pumping
2. High-Pressure Capability
Feature: Designed for high differential pressure duties, Multiple stages allow flexible pressure generation
Advantages: Suitable for boiler feed water, Suitable for mine dewatering, Reduces the need for multiple pump systems
3. High Hydraulic Efficiency
Design features: Optimized impeller geometry, Efficient diffuser design, Hydraulic balance between stages
Advantages: Lower energy consumption, Reduced operating costs, Improved lifecycle cost
4. Robust Ring-Section Casing Design
Feature: The MC pump uses separate stage casings assembled with tie rods.
Advantages: High-pressure resistance, Good mechanical strength, Reliable operation under severe conditions
5. Axially Split / Horizontal Maintenance-Friendly Structure
Feature: Horizontal arrangement, Easy access to rotating components
Advantages: Faster inspection, Easier overhaul, Reduced maintenance downtime
6. Balanced Axial Thrust System:
Advantages: Protects bearings, Improves rotor stability, Extends pump life
7. Reliable Bearing System:
Design features: Heavy-duty radial bearings, Thrust bearing arrangement, Rigid shaft support
Advantages: Stable operation at high speed, Reduced vibration, Longer bearing life
8. High-Quality Typical Material Options:
| Pump Parts | Materials |
| Casing | Carbon steel, alloy steel |
| Impeller | Stainless steel, duplex stainless steel |
| Shaft | Alloy steel / stainless steel |
| Wear components | Stainless alloys |
9. Flexible Configuration Options:
MC pumps can be customized with:
Different number of stages
Various impeller diameters
Different sealing systems
Different materials
Different drive arrangements
Advantages: Optimized for each duty point, Suitable for various industries
10. Mechanical Seal Options:
Design supports: Cartridge mechanical seals, Single seals, Double seals
Advantages: Reduced leakage, Easier maintenance, Improved reliability
Sulman MC Series Pump Spare Parts List
MC Series pump is a high-pressure horizontal multistage ring-section pump (BB4 type). Its spare parts are mainly concentrated in the hydraulic section, rotor assembly, balancing system, sealing system, and bearing components.
| Pos.No. | Part Name | Description |
| 102 | Suction Casing | Pump inlet casing |
| 107 | Discharge Casing | Final outlet casing |
| 108 | Stage Casing | Intermediate stage casing |
| 109 | Impeller | Pumping element (sometimes used for specific versions) |
| 171 | Diffuser | Converts velocity energy into pressure |
| 177 | Final Diffuser | Last stage diffuser |
| 210 | Pump Shaft | Main rotating shaft |
| 212 | Intermediate Shaft | Shaft section (multi-piece rotor design) |
| 213 | Head Shaft | Drive-end shaft section |
| 230 | Impeller | Main rotating hydraulic component |
| 231 | First Stage Impeller | Suction impeller |
| 320 | Bearing | Radial/thrust bearing |
| 330 | Bearing Bracket | Bearing support |
| 360 | Bearing Cover | Bearing housing cover |
| 400 | Gasket | Casing sealing gasket |
| 412 | O-ring | Static sealing element |
| 423 | Labyrinth Ring | Bearing protection seal |
| 433 | Mechanical Seal | Shaft sealing device |
| 452 | Seal Gland | Mechanical seal/packing holder |
| 456 | Throat Bush | Seal chamber wear component |
| 500 | Balance Ring | Balance system component |
| 502 | Stationary Wear Ring | Casing wear ring |
| 503 | Impeller Wear Ring | Rotating wear ring |
| 506 | Retaining Ring | Retaining component |
| 507 | Deflector | Oil/water deflection component |
| 524 | Shaft Wearing Sleeve | Protects shaft from wear |
| 531 | Fixing Sleeve | Rotor fixing component |
| 541 | Interstage Bush | Guides rotor between stages |
| 544 | Oil Ring | Bearing lubrication component |
| 550 | Disc | Spacer/support disc |
| 603 | Balance Drum | Axial thrust balancing component |
| 605 | Balance Drum Liner | Wear protection for balance drum |
| 672 | Venting Device | Air vent component |
| 905 | Tie Bolt / Stud | Holds stage casings together |
| 920 | Nut | Fastening part |
| 922 | Impeller Nut | Secures impeller |
| 923 | Bearing Nut | Secures bearing |
| 931 | Lock Washer | Prevents loosening |
| 932 | Circlip | Retaining ring |
| 940 | Key | Shaft/impeller key |
Sulman MC Pumps for Power Plants – Boiler Feed Water Systems
Pumping Liquids: Feed water, Condensate water, Treated water etc
Applications:
Advantages:
Sulman MC Pumps for Water Treatment & Desalination Plants
Used for:
Typical projects:
Sulman MC Series Pumps Differences with Other Series Pumps
| Series | Pump Type | Main Applications | Main Differences |
| MC Series | Horizontal multistage ring-section pump (BB4) | Boiler feed water, power plants, desalination, high-pressure water | High pressure + multistage design |
| CZ Series | Single-stage end suction process pump (OH2) | Chemical, petrochemical, mining process liquids | Designed for chemical/process fluids |
| APP Series | End suction process pump | Sugar, paper pulp, chemical, food, industrial process | General industrial process pumping |
| A Series | Single-stage centrifugal pump | Paper and pulp, water, industrial applications | General-purpose heavy-duty pump |
| SNS Series | Between-bearing process pump | Mining, chemical, oil & gas | Heavy-duty continuous process service |
| MBN Series | Multistage ring-section pump | Medium/high pressure water | Lower pressure range than MC |
| MD Series | High-pressure stage casing pump | Large power plants, boiler feed | Higher pressure duty than MC |
| ME Series | Very high-pressure stage casing pump | Special high-pressure services | Ultra-high pressure than MC |
Sulman MC Series Pumps Popular Models and Best Selling Spare Parts
Priority models:
Best-selling spare parts:
Mechanical seals, Impellers, Diffusers, Wear rings, Balance drums, Bearings, Shaft sleeves, Gasket kits
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Contact Information
+86 180 3203 4573
+86 311 8722 1317
No. 266, Tianshan St, High-tech Zone, Shijiazhuang City 050000, China.
