What are Sulman APP51-300 Process Pumps?
Sulman APP51-300 pumps are a series of single-stage, end-suction centrifugal process pumps from APP Series Pumps. They are designed for reliable and efficient handling of clean liquids, process fluids, and low-solid-content liquids in industrial applications.
Sulman APP Series Pumps are widely used in:
Pulp & paper plants
Chemical industries
Mining & metallurgy plants
Sugar plants
Biofuel plants
Water and wastewater treatment
General industrial processes
Sulman APP Series Pumps Common Models Include:
| APP Model | Typical Application |
| APP11-32 | Small process water / chemical circulation |
| APP11-40 | Small industrial liquid transfer |
| APP11-50 | Small flow process applications |
| APP21-65 | General industrial process pumping |
| APP21-80 | Water, chemical, pulp applications |
| APP22-32 | Low flow process service |
| APP22-40 | Chemical and industrial liquids |
| APP22-50 | General process pumping |
| APP22-65 | Medium duty process service |
| APP22-80 | Higher flow industrial applications |
| APP23-40 / APP23-50 | Process liquid transfer |
| APP31-100 | Medium-sized process pump |
| APP31-125 | Industrial process systems |
| APP31-150 | Higher flow applications |
| APP32-65 / APP32-80 / APP32-100 / APP32-125 | Paper, chemical, water systems |
| APP41-200 | Large process applications |
| APP41-300 | High flow industrial service |
| APP42-150 / APP42-200 | Process circulation systems |
| APP43-250 / APP43-300 | Large flow process pumping |
| APP51-250 | Medium-large process duties |
| APP51-300 | Large process pump |
| APP51-400 / APP51-500 | Large capacity industrial applications |
| APP52-350 / APP52-400 | High capacity applications |
| APP53-100 to APP53-400 | Various industrial process duties |
| APP54-400 / APP54-500 | Large flow applications |
| APP55-100 to APP55-300 | Process liquid handling |
| APP61-400, APP61-500, APP71-630 | Large-capacity, Extra-large process pump |
Sulman APP51-300 Paper Pumps Key Advantages
Sulman APP51-300 Pumps Spare Parts
| Part Name | Position No | Function |
| Volute Casing / Pump Casing | 102 | Contains liquid flow and converts velocity into pressure |
| Impeller | 230 | Transfers energy to the pumped liquid |
| Suction Cover / Casing Cover | 161 | Covers suction side and supports hydraulic flow |
| Wear Ring / Casing Wear Ring | 502 | Reduces wear between rotating and stationary parts |
| Wear Plate / Side Plate | 135 | Protects casing from erosion |
| Impeller Nut | 922 | Secures impeller on shaft |
| Impeller Key | 940 | Transfers torque from shaft to impeller |
| Pump Shaft | 210 | Transmits torque from motor to impeller |
| Shaft Sleeve | 524 | Protects shaft from seal wear |
| Bearing Housing | 330 | Supports bearing assembly |
| Bearing | 320.1 | Radial load support |
| Bearing | 320.2 | Axial/radial support |
| Bearing Unit | 013 / 320 | Supports rotating shaft |
| Bearing Cover | 360 | Holds and protects bearings |
| Mechanical Seal | 400 | Prevents leakage along shaft |
| Stuffing Box Housing | 451 | Houses seal components |
| O-ring / Seal Ring | 412 | Static sealing |
| Static Seal | 435 | Prevents casing leakage |
| Lantern Ring | 458 | Cooling/flushing arrangement |
| Packing Gland | 452 | Holds packing seal |
Sulman APP51-300 Pumps for Sugar Industry
APP Pumps main applications in Sugar Plants
1. Raw Juice Transfer Pumps
Transfer extracted cane juice from milling area to clarification section
2. Clarified Juice Pumps
After clarification, juice contains fewer suspended solids.
APP pumps are suitable for:
Clarified juice transfer
Circulation between process tanks
3. Evaporator Circulation Pumps
Juice circulation through evaporators
Heat transfer improvement
4. Condensate Pumps
Evaporator condensate recovery
Boiler system water recovery
5. Cooling Water Pumps
Cooling tower circulation
Heat exchanger cooling water
Utility water systems
6. Chemical Circulation Pumps
APP pumps can handle: Chemical solutions, Treatment chemicals
Material selection can be customized: Stainless steel, Duplex stainless steel etc
Sugar APP51-300 Pumps for Chemical Processing
1. Chemical Transfer Pumps
Typical fluids: Acids, Alkalis, Solvents, Chemical solutions, Additives
2. Reactor Circulation Pumps
Used in chemical reactors for: Mixing improvement, Heat transfer, Maintaining process conditions
3. Heat Exchanger Circulation Pumps
Applications: Chemical reactors, Distillation systems, Process cooling loops
4. Acid & Alkali Circulation Pumps
Chemical plants often require corrosion-resistant pumps, APP pumps can be configured with Stainless steel, Duplex stainless steel, Special alloys, Used for: Acid circulation, Caustic soda circulation, Neutralization systems
5. Solvent Transfer Pumps
Applications: Organic chemical production, Pharmaceutical chemicals, Coating industries
6. Fertilizer Industry Applications
APP pumps can be used in fertilizer plants, Applications for Phosphoric acid circulation, Ammonium solution transfer, Process water, Cooling systems
7. Petrochemical Applications
Applications for Process water, Chemical additives, Cooling systems, Circulation duties
Sulman APP51-300 Pump Application by Industry
| Industry | Typical Usage |
| Pulp & Paper | White water, process water, chemical circulation |
| Chemical | Acid, alkali, solvent, process liquids |
| Mining | Process water, reagent, cooling water |
| Sugar | Juice circulation, condensate |
| Biofuel | Process liquids |
| Water Treatment | Effluent, recycle water |
| Power Plants | Cooling and utility water |
Sulman APP51-300 Pumps Compared with Other Process Pumps
Sulman APP pumps are premium industrial process pumps with their strongest advantages in reliability, efficiency, and lifecycle cost.
They are especially competitive in:
Pulp & paper plants
Chemical processing
Sugar factories
Mining process systems
Fertilizer plants
Compared with competitors:
Better than general industrial pumps in reliability
Comparable in chemical applications
Stronger than many competitors in pulp & paper and process industries
For customers operating large continuous plants, Sulman APP51-300 and similar APP models are often selected because downtime costs are much higher than the initial pump price.
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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.
