QBY Series Marine Pneumatic Diaphragm Pump
The QBY Series Marine Pneumatic Diaphragm Pump delivers exceptional versatility for handling diverse marine pumping applications. Certified by leading classification societies including CCS, these air-operated pumps efficiently transfer everything from free-flowing liquids to challenging viscous media, combining the benefits of self-priming, submersible, sealed, and solids-handling pumps in one robust unit. Their explosion-proof design ensures safe operation in hazardous environments while handling toxic, flammable, and corrosive materials without risk.
Key Components & Features
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Multi-Material Diaphragms: Seven specialized diaphragm options for different chemical compatibilities
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Flexible Connections: 1/4″ to 3″ inlet/outlet options with flange or threaded connections
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Bottom Bolt Design: Dual-bolt connection ensures superior sealing and easy maintenance
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Customizable Valve Balls: Multiple material options for specific application requirements
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Explosion-Proof Operation: Safe for flammable and hazardous environments
Technical Performance Specifications
| Model | Flow Capacity (m³/h) | Maximum Head (m) | Air Consumption (m³/min) | Max Particle Size (mm) | Suction Lift (m) |
|---|---|---|---|---|---|
| QBY-10 | 0-0.8 | 50 | 0.3 | 1.0 | 5 |
| QBY-15 | 0-1.0 | 50 | 0.3 | 1.0 | 5 |
| QBY-25 | 0-2.4 | 50 | 0.6 | 2.5 | 7 |
| QBY-40 | 0-8.0 | 50 | 0.6 | 4.5 | 7 |
| QBY-50 | 0-12 | 50 | 0.9 | 8.0 | 7 |
| QBY-65 | 0-16 | 50 | 0.9 | 8.0 | 7 |
| QBY-80 | 0-24 | 50 | 1.5 | 10.0 | 7 |
| QBY-100 | 0-30 | 50 | 1.5 | 10.0 | 7 |
Performance Advantages
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True Self-Priming Capability: No need for initial priming – runs dry without damage
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Solids Handling Proficiency: Passes particles up to 10mm without clogging or damage
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Infinite Adjustability: Stepless flow and pressure control via air valve regulation
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Complete Fluid Isolation: Diaphragm separates medium from all working components
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Explosion-Proof Safety: Ideal for hazardous areas and volatile substances
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Maintenance-Free Operation: No lubrication required – operates without oil
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Corrosion Resistance: Handles aggressive chemicals and seawater applications
Certification & Compliance
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CCS (China Classification Society) Certified
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Marine-grade construction standards
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Explosion-proof certification for hazardous areas
Typical Marine Applications
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Bilge and ballast water transfer
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Chemical and fuel handling operations
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Wastewater and sludge pumping
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Tank cleaning and stripping operations
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Dewatering and drainage applications
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Hazardous material transfer
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Firefighting and emergency systems
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Lubricant and hydraulic oil transfer
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