Rubber Air Operated Diaphragm Pump 3 Inch Corrosion Resistance
Air Driven Double Diaphragm Pump Parameters
Item | Description | Unit | Reference Figure |
1 | Maximum air inlet pressure | Mpa | 0.83 |
2 | Maximum flow rate | 1/Min | 903 |
3 | Maximum lift | M | 70 |
4 | Maximum outlet pressure | Mpa | 0.83 |
5 | Maximum particle size | mm | 9 |
6 | Weight | kg | 103 |
7 | Noise level | db | <70 |
Air Driven Double Diaphragm Pump General Description
diaphragm pump offers high volume delivery even at low air pressure and a b road range of material compatibility options available.Refer to the model and option chart.The BSK pump is provided with the modularized air motor and fluid section.
The air operated diaphragm pump alternately generates the intake fluid pressure and positive fluid pressure in the fluid chamber by using the pressure difference in the air chamber. The ball valve can ensure the forward flow of fluid.
Pump cycling will begin as air pressure is applied and it will continue to pump and keep up with the demand. It will build and maintain line pres -sure and will stop cycling once maximum line pressure is reached (dis -pensing device closed) and will resume pumping as needed.
Air Driven Double Diaphragm Pump Advantages:
- Idling ,Self-priming , Submerse capability.
- Provide stall-free, ice-free zero leak operation.
- Epoxy-coated air section for tough environmental conditions.
- Low shear force , not easy to damage the material structure.
- Bolt joint design provides even sealing pressure for optimal performance
- Modular air valve,low pulsation operation,providing smooth and rapid changeover.
- No electricity . It's safe and realiable while using in the flammable and explor place .
- Diversity of material,no rotating parts,applicable to various erosive situations.
- Can pump corrosive , volatile, flammable, poisonous fluids with particles and high viscosity.
- Delivery lift and flow can pass the pneumatic valve open to realize the stepless adjustment.
1” Flow diagram

OPERATING INSTRUCTIONS
- Always flush the pump with a solvent compatible with the material being pumped if the material being pumped is subject to “setting up” when not in use for a period of time.
- Disconnect the air supply from the pump if it is to be inactive for a few hours.
- The outlet material volume is governed not only by the air supply but also by the material supply available at the inlet. The material supply tubing should not be too small or restrictive. Be sure not to use hose which might collapse.
- When the diaphragm pump is used in a forced -feed (flooded inlet) situation, it is recommended that a “Check Valve” be installed at the air inlet.
- Secure the diaphragm pump legs to a suitable surface to insure against damage by vibration.
Maintenance
- Please refer to the component schematic in the assembly drawings to look up the serial numbers and names of parts and grasp the information of parts and maintenance service pack.
- Some BSK parts are marked as "wearing parts", which can conduce to quick service and downtime reduction.
- Service kits are divided to service two separate diaphragm pump functions: 1. AIR SECTION, 2. FLUID SECTION. The FLUID SEC -TION is divided further to match typical part MATERIAL OPTIONS.
- Provide a clean work surface to protect sensitive internal moving parts from contamination from dirt and foreign matter during service disassembly and reassembly.
- Keep good records of service activity and include pump in preven -tive maintenance program.
- Before disassembling, empty captured material in the outlet man -ifold by turning the pump upside down to drain material from the pump.
FLUID SECTION DISASSEMBLY
- Remove the upper and lower manifold (1) and (11).
- Remove the ball (2), “O” ring (3) (47) and ball seat (4).
- Remove the fluid cap (5).
NOTE: Only diaphragm models use a primary diaphragm(6A) and a backup diaphragm(6). Refer to the aux iliary view in the Fluid Section illustration.
- Remove the screw (10), washer (9), diaphragm (6A, 6) and diaphragm washer (7, 8).
NOTE: Do not scratch or mar the surface of (23) diaphragm rod.
Installation dimensions:


