Air Operated Double Diaphragm (AODD) Pumps - BML Series
BML series AODD pumps are positive displacement pump that uses two flexible diaphragms reciprocate back and forth in its casings, drawing in fluid and expels it, through check valves, to discharge piping. Compressed air is used as the power source to drive the pump. BML AODD pumps are used in many industries - chemicals, food processing, paints, electronics, mining, ink, etc. BML AODD pumps were manufactured by a joint venture company between Bumian (Mainland China) and Bumian (Hong Kong) for many years and has a track record of successfully exported to overseas markets.
Why choose BML AODD pumps?
• Versatility - BML AODD pumps can handle even the most corrosive or abrasive fluids. Pumps are made in a wide variety of different materials compatible with the properties of liquid, enabling them to pump virtually any chemical or fluid on the market.
• Safety - BML AODD pumps do not require electricity other than compressed air. This means that they can be used in places where electrical supply is not suitable i.e. in hazardous areas.
• Simplicity - BML AODD pump design is simple, using relatively less moving parts - means easy and fast maintenance. Powered by compressed air only - no electrical wiring nor complex controls. Easy installation, clean and smooth operation.
• Simple operation - BML AODD pumps have static sealing surfaces and do not require mechanical seals. They are self-priming. Diaphragm pumps can run dry without risk of damage.
We offer a wide range of high quality spare parts such as Air and Wet Repair Kits, diaphragms, balls, valve seats, air valves, seals, gaskets, silencers, etc. for repairing and maintainance of the most renowned brands such as ARO, Wilden, SandPiper, Yamada, etc.Materials of synthetic rubbers, thermoplastics and Teflon, PTFE,at competitive pricing and prompt delivery. Keep your pump operate at top efficiency and maximum life span
Pneumatic diaphragm pump performance
BML-15A

BML-20A

BML-25A

Model No. | BML15A | BML20A | BML25A |
---|---|---|---|
Max flow (L/min) | 35 | 54 | 160 |
Suction lift (M) | 6 | 6 | 6 |
Lift (M) | 70 | 70 | 70 |
Max discharge pres. Mpa | 0.7 | 0.7 | 0.7 |
Limit of slurry, mm | 2 | 3 | 3 |
Air supply pres (Mpa) | 0.2 - 0.7 | 0.2 - 0.7 | 0.2 - 0.7 |
Shell material | Aluminum | Aluminum | Aluminum |
Diaphragm material | PTFE | PTFE | PTFE |
Thread | BSPT | BSPT | BSPT |
Liquid conn.(inch) | ½ | ¾ | 1 |
Air conn.(inch) | ¼ | ¼ | 3/8 |
Net wt. Kg | 4.5 | 6 | 14 |
Gross wt. Kg | 5 | 6.5 | 14.5 |
Ctn dimensions (cm) | 18*22*28 | 20*23*32 | 24*30*45 |
BML-40A

BML-50A

BML-80A

Model No. | BML40A | BML50A | BML80A |
---|---|---|---|
Max flow (L/min) | 379 | 568 | 1135 |
Suction lift (M) | 6.1 | 6.1 | 8.5 |
Lift (M) | 70 | 70 | 70 |
Max disch. pres. Mpa | 0.8 | 0.8 | 0.8 |
Limit of slurry, mm | 4.8 | 6.3 | 12.7 |
Air supply pres (Mpa) | 0.2 - 0.8 | 0.2 - 0.8 | 0.2 - 0.8 |
Shell material | Aluminum | Aluminum | Aluminum |
Diaphragm material | PTFE | PTFE | PTFE |
Thread | BSPT | BSPT | BSPT |
Liquid conn.(inch) | 1-½ | 2 | 3 |
Air conn. (inch) | ½ | ½ | ¾ |
Net wt. Kg | 16 | 23 | 79 |
Ctn dimensions (cm) | 27.5*40*54 | 34*46*64 | 98*80*51 |
Parts, Service Kits & After Market Parts
Maintain and service your pumps with original BML air section and wet section repair kits to ensure optimum performance level.
AFTER-MARKET PARTS - BML series air operated double diaphragm (AODD) pumps also have parts and repair kits that can fit or compatible with ARO, Wilden, SandPiper, Yamada, pumps. pumps.

Repair kits, Diaphragms - Buna, Neoprene, Viton, EPDM

Fluid Section Service Kits, Diaphragms - PTFE, Santoprene, Hytrel, etc.

Air Section Service Kits
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Contact us today for more info. - 06-317 2118