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Stainless Steel Diaphragm Pump
We are a professional manufacturer of stainless steel diaphragm pumps. Our products are known for their high quality and stability, and we have provided numerous water pump solutions to our customers.
1. Brief Description
Our QBY air-operated double diaphragm pump is an ideal choice for your pumping needs. It can handle both liquid and difficult-to-move media, combining the advantages of self-priming pumps, submersible pumps, shield pumps, slurry pumps, and impurity pumps.
- No need to prime the pump; it can lift up to 7 meters.
- Delivery head reaches 70 meters, with pressure exceeding 6 kgf/cm².
- Wide flow range and good performance; it can pass particles up to 10 mm in diameter.
- Minimal damage to the pump when handling slurry or impurities.
- The delivery head and flow can be adjusted steplessly using the pneumatic valve.
- Pneumatic pressure adjustment ranges from 1 to 7 kgf/cm².
- No rotating parts or bearing seals; the diaphragm completely isolates the pumped medium from the internal components.
- Safe and reliable operation without electricity, making it ideal for flammable environments.
- Can handle viscous liquids (viscosity below 10,000 cP).
- No oil lubrication required, even during idling.
- Simple structure with fewer wearing parts, easy to install and maintain.
- Automatically protects itself from overloading and restarts when conditions return to normal.
- Easy to operate—just open or close the gas valve to start or stop.
2. Main Applications
This pump is suitable for a wide range of applications:
- Suction of peanut butter, pickles, tomato puree, sausages, chocolate, hops, and syrups.
- Transfer of paint pigments, adhesives, and glues.
- Handling of glazed slurries from materials like tiles, porcelain, bricks, and ceramics.
- Transport of grinding materials, corrosive agents, and oil-based dirt.
- Conveying toxic, flammable, or volatile liquids.
- Pumping of wastewater, cement, and mortar.
- Handling strong acids, alkalis, and corrosive liquids.
- Used as a front-end transfer device in solid-liquid separation systems.
Below is a detailed specification table for different models:
| Model | Flow | Head (m) | Efficiency (%) | Speed (r/min) | Power (kw) | Weight (kg) | |
| (m³/h) | (L/s) | ||||||
| PBG40-100(I) | 12.5 | 3.47 | 12.5 | 62 | 1450 | 1.1 | 34 |
| PBG40-100(I)A | 11 | 3.05 | 10 | 60 | 1450 | 0.75 | 31 |
| PBG40-125(I) | 12.5 | 3.47 | 20 | 58 | 1450 | 1.5 | 38 |
| PBG40-125(I)A | 11 | 3.05 | 16 | 57 | 1450 | 1.1 | 33 |
| PBG40-160(I) | 12.5 | 3.47 | 32 | 52 | 2900 | 3.0 | 56 |
| PBG40-160(I)A | 11.7 | 3.25 | 28 | 51 | 2900 | 2.2 | 47 |
| PBG40-160(I)B | 10.4 | 2.89 | 22 | 50 | 2900 | 1.5 | 43 |
| PBG40-200(I) | 12.5 | 3.47 | 50 | 46 | 2900 | 5.5 | 85 |
| PBG40-200(I)A | 11.7 | 3.25 | 44 | 45 | 2900 | 4.0 | 75 |
| PBG40-200(I)B | 10.6 | 2.94 | 36 | 44 | 2900 | 3.0 | 63 |
| PBG40-250(I) | 12.5 | 3.47 | 80 | 38 | 2900 | 11 | 145 |
| PBG40-250(I)A | 11.6 | 3.22 | 70 | 38 | 2900 | 7.5 | 95 |
| PBG40-250(I)B | 10.8 | 3.0 | 60 | 37 | 2900 | 7.5 | 94 |
| PBG40-250(I)C | 10.0 | 2.78 | 52 | 36 | 2900 | 5.5 | 88 |
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