Diaphragm Pump
Category: Pump
Overview
Air-operated double diaphragm (AODD) pumps use compressed air alternating between two flexible diaphragm chambers to transfer fluid. With no rotating shaft or mechanical seal, AODD pumps are inherently leak-free, self-priming, and capable of running dry without damage. They handle abrasive slurries, viscous fluids, and chemically aggressive liquids that would destroy conventional centrifugal or gear pumps. Suitable for hazardous area installation with ATEX-rated air valves.
Technical Specifications
| Operating Principle | Air-operated double diaphragm (AODD) |
| Diaphragm Material | PTFE / Santoprene / Neoprene / Buna-N |
| Wetted Body Material | Polypropylene / Aluminium / SUS316 |
| Ball/Seat Material | PTFE / Santoprene / SS / Ceramic |
| Max Flow Rate | Up to 800 L/min |
| Max Pressure | 8.6 bar (125 psi) |
| Air Supply | 2 – 8 bar |
| Solids Handling | Up to 10 mm particle diameter |
| Dry-Run Capability | Unlimited |
| Connection | NPT / BSPT / Flanged |
| Standard | CE / ATEX II 2G (optional) |
Applications
- Chemical dosing and transfer
- paint and coating transfer
- food-grade liquid pumping
- wastewater sludge transfer
- ceramic slurry and abrasive fluid handling
- pharmaceutical and cosmetic fluid transfer
Key Features
- No mechanical seal — zero leakage risk
- self-priming up to 9 m dry suction
- runs dry without damage
- ATEX option for hazardous areas
- handles slurries and solids up to 10 mm
- flow controlled by air pressure — no electrical connection required
For technical inquiries & custom orders: supakorn@stico.co.th | Tel: 02-035-9589
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