Flow rate : 90L/Min
Inlet / Outlet : 1/2" 、1''、1.5"
Air Consumption : 11.5 p³/min
Max Pressure: 115 PSI (8 BAR)
Maximum working temperature ; 55°C
The QBY2 Series Aluminum Alloy Air Operated Diaphragm Pump is designed for transferring compatible industrial liquids, including selected oils, water-based coatings, adhesives, organic solvents, and ceramic glaze. Driven by compressed air, the pump uses a diaphragm and check-valve mechanism to move liquids without requiring an electric motor to directly drive the pumping process. Available in QBY2-15, QBY2-25, and QBY2-40 models, the series offers different flow capacities, suction lifts, and particle-handling capabilities for industrial fluid transfer applications.
| Parameter | QBY2-15 | QBY2-25 | QBY2-40 |
|---|---|---|---|
| Model | QBY2-15 | QBY2-25 | QBY2-40 |
| Flow Rate | 22 L/min | 57 L/min | 378.5 L/min |
| Maximum Head | 70 m | 70 m | 84 m |
| Suction Lift | 4 m | 4.5 m | 5.48 m |
| Bore Diameter | 1/2 “ | 1″ | 1.5″ |
| Maximum Particle Diameter | 1.5 mm | 2.5 mm | 3.5 mm |
| Air Consumption | 0.36 m³ | 0.36 m³ | 0.67 m³ |
| Pump Body Material | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy |
Lightweight Construction
The aluminum alloy body reduces pump weight, making handling, transportation, and installation more convenient in suitable industrial environments.
Compressed-Air Operation
The pneumatic drive eliminates the need for an electric motor directly driving the liquid pumping mechanism. The pump requires a suitable compressed-air supply and must be installed according to the operating requirements of the complete system.
Flexible Model Selection
The QBY2-15, QBY2-25, and QBY2-40 offer different rated flow capacities and maximum particle diameters, allowing buyers to select a configuration according to the required transfer volume and liquid characteristics.
Versatile Fluid Transfer
The series can be used with selected adhesives, water-based coatings, oils, organic solvents, and ceramic glaze when the pump’s wetted materials are chemically compatible with the liquid.
Maintainable Pump Structure
The diaphragm, ball valves, valve seats, and air distribution components are key parts of the pumping mechanism. Routine inspection helps identify wear, leakage, and performance changes during service.
The QBY2 series is intended for compatible industrial liquids, including selected adhesives, water-based coatings, oils, organic solvents, and ceramic glaze. Actual compatibility depends on the liquid’s chemical composition, concentration, temperature, and viscosity, as well as the materials of the diaphragm, valve balls, seals, and pump body. Confirm the complete wetted-material compatibility before using the pump with corrosive or solvent-based liquids.
Choose the model according to the required flow rate, suction lift, discharge head, and maximum solid particle size. The catalog lists flow rates of 22 L/min for the QBY2-15, 57 L/min for the QBY2-25, and 378.5 L/min for the QBY2-40. These are catalog ratings, and actual flow depends on the compressed-air supply, liquid properties, and system back pressure. Confirm the required operating conditions before selecting a model.
The catalog specifies maximum particle diameters of 1.5 mm, 2.5 mm, and 3.5 mm for the QBY2-15, QBY2-25, and QBY2-40, respectively. These limits can help determine whether a model is suitable for a liquid containing small suspended particles. Particle shape, hardness, concentration, and abrasiveness also affect suitability and component wear, so the maximum diameter alone should not determine model selection.
A suitable compressed-air supply is essential for operating the diaphragm mechanism. Buyers should confirm the required air pressure and consumption, along with the inlet and outlet connections, suction conditions, discharge head, liquid viscosity, and intended flow rate. The catalog lists air consumption in cubic metres but does not state the time basis, so the required air supply should be verified against the manufacturer’s technical documentation.
Not all corrosive chemicals or organic solvents are compatible with aluminum alloy. Suitability depends on the specific chemical, concentration, temperature, exposure time, and the materials of all components in contact with the liquid. Before using the QBY2 series for a particular chemical, confirm compatibility with the manufacturer. For highly corrosive media, an alternative pump material may be more appropriate.
The Double Diaphragm Pneumatic Pump has been designed and developed for fluid transfer according to your specifications, being the ideal product for environments where there is a need to dispose and transfer lubricating oil, diesel oil and water. The equipment has an Aluminium body, providing better fluid flow transition and internal ball movement, besides also having a double diaphragm system, providing greater effectiveness and better usability of the product, and seals in NBR, providing total resistance to pressure exerted by the pump and at high temperature levels.
Pneumatic Diaphragm Pump not only can exhaust the flow liquid, but also can convey some uneasy flow media, with the merits of self-pumping pump, diving pump, shield pump, slurry pump and impurity pump etc.
There are four kinds of material: cast iron, aluminum, engineering plastic, and stainless steel. The diaphragm pumps according to different liquid medium, butyl rubber were used respectively to either a Buna-N rubber, Neoprene rubber, F4 fluorine rubber, F46 fluorine rubber and so on, to meet the needs of different users.
1.IN/OUT INTERCHANGEABLE
2. LONG LIFE DIAPHRAGM
3.BUILT-IN DIFFUSER
4.SUITABLE FOR IMMERSED INSTALLATIONS
| Model | QBY-25 |
| Flow rate | 90L/Min |
| Inlet / Outlet | 1” |
| Inlet by air | 1/4” |
| Air Consumption | 11.5 p³/min |
| Lift | 5M |
| Max Pressure | 115 PSI (8 BAR) |
| Maximum working temperature | 55°C |
| Maximum particle suction diameter | 3mm |
| Materials | Aluminum |
