Air-Operated Double Diaphragm Pumps
BEGE supplies pneumatic pumps for efficient and continuous fluid and powder transfer in industrial applications.
Double Diaphragm Pumps
BSK pneumatic pumps are designed to move fluids and powders efficiently, from thin chemicals to thick slurries, regardless of their viscosity or composition. These diaphragm pumps are self-priming, supporting continuous production processes without unplanned downtime. This ensures smooth operations and maximum cost efficiency for optimal returns.
Industrial BSK pumps offer both robust, efficient performance and the versatility and flexibility required to meet a wide range of industrial needs. They handle thin fluids, thicker viscous substances, or fluids containing solid particles such as silicon carbide, titanium dioxide and starches with ease. Made from durable materials, BSK pumps are resistant to chemical corrosion and mechanical wear, ensuring long life and reliability. Moreover, they comply with all applicable industry standards and specifications.
Product Overview
For machine builders seeking reliable and efficient fluid transfer, we offer low-maintenance diaphragm pumps. These pumps are suitable for confined spaces, hygienic environments, and specific requirements such as high-pressure applications or powder processing.
BP series
Compact Diaphragm Pump
Compact air-operated diaphragm pump, ideal for various applications where space is limited but fluid transfer still needs to be achieved.
- Flow rate: up to 2.7 m³/h
- Head: up to 70.4 m
- Pressure: up to 6.9 bar
BA series
Versatile Double Diaphragm Pump
Double diaphragm pump for demanding applications. With 25.4-72.6 mm inlet/outlet port and aluminum motor for optimal performance.
- Flow rate: up to 54 m³/h
- Head: up to 84.7m
- Pressure: up to 8.3 bar
FS series
Sanitary Pump
Versatile air-operated stainless steel diaphragm pump for the production and packaging of cosmetics, pharmaceuticals, and medical devices.
- Flow rate: up to 37 m³/h
- Head: up to 84.7m
- Pressure: up to 8.3 bar
HA series
High-Pressure Diaphragm Pump
Air-operated high-pressure pump with impressive capacity and system pressure. Compatible with various fluids, including suspensions of particles up to 9 mm.
- Flow rate: up to 54 m³/h
- Head: up to 140m
- Pressure: up to 8.3 bar
FD series
Food-Grade Diaphragm Pump
Food-safe double diaphragm pump made of stainless steel, ideal for the production and processing of food products with low to medium viscosity.
- Flow rate: up to 37 m³/h
- Head: up to 84,7m
- Pressure: up to 8.3 bar
PA series
Pneumatic Powder Pump
Air-operated double diaphragm pump for fast and efficient processing and pneumatic conveying of powders with a high bulk density of up to 1200 kg/m³.
- Flow rate: up to 10.1 t/h
- Head: up to 30m
- Pressure: up to 6.9 bar
Integrated Systems for Pump Installations
BEGE specializes in engineering complete, intelligent control systems with double diaphragm pumps and other components such as PLCs or frequency converters. Our high-quality integrated systems ensure maximum continuity and increase the productivity and efficiency of our customers’ machines and installations in the food, pharmaceutical and marine industries.
We also offer custom solutions with industrial pumps for various applications involving different types of fluid transfer:
- Mixing machine for sticky fluids in the food industry
- Dosing system for corrosive chemicals in the chemical industry
- Cleaning equipment for marine applications
- Chemical dosing system for water treatment
- Cream and gel system for the production of cosmetic oils
- Pump station for biological manure processing
- Disinfection system for drinking water in remote areas
- Process equipment for biofuel production
- Dosing system for precision agricultural applications
- Fluid disposal system for dirty water and abrasive slurries in mining
BEGE is a distributor of BSK pneumatic diaphragm pumps
These efficient air-operated double diaphragm pumps are ideal for various applications where reliable fluid handling is essential, ranging from compact spaces to demanding industrial environments.
Double Diaphragm Pumps at BEGE
Everything you need to know about double diaphragm pumps
Below are answers to the most common questions about choosing and using air-operated diaphragm pumps.
AODD pumps come in several configurations to match fluid type, hygiene standards, and operating environments. Main types include:
- Compact diaphragm pump
- Versatile double diaphragm pump
- Sanitary pump
- High-pressure diaphragm pump
- Food-grade diaphragm pump
- Pneumatic powder pump
| Pump type | Flow rate | Pressure | Best use case |
| Compact diaphragm pump | Up to 2.7 m³/h | Up to 6.9 bar | Small, portable machines or limited space installations |
| Versatile double diaphragm pump | Up to m³/h | Up to 8.3 bar | General-purpose chemical and industrial applications |
| Sanitary pump | Up to 37 m³/h | Up to 8.3 bar | Food, beverage, pharmaceutical – hygienic and easy to clean |
| High-pressure diaphragm pump | Up to 54 m³/h | Up to 8.3 bar | Filter presses, dense slurries, high backpressure systems |
| Food-grade pump | Up to 37 m³/h | Up to 8.3 bar | FDA-compliant, polished stainless steel, food & beverage applications |
| Pneumatic powder pump | Up to 10.1 t/l | Up to 6.9 bar | Handling powders, granular solids, delicate material transfer |
Tip: Focus on flow and pressure requirements first to narrow down pump type for your machine. Combine with material compatibility for chemical or food applications.
- Self-priming: Can start dry and lift from below fluid level.
- Handle solids and slurries: No damage to pump internals.
- Chemical resistance: Wide material compatibility.
- Variable flow and pressure: Adjusts easily with air supply.
- Safe in explosive zones: No electric motor required.
Air-operated double diaphragm pumps reduce downtime in harsh applications where centrifugal or gear pumps would fail.
Pump body materials:
- Aluminium: general purpose.
- Stainless steel: hygienic, food & beverage, resistant to corrosion.
- Carbon Steel or Cast iron: heavy-duty, abrasion-resistant.
- Poly Propylene & PVDF: maximum chemical resistance.
Diaphragm materials:
- PTFE: chemical resistance, pharma/food.
- NBR: oils and hydrocarbons.
- Santoprene: versatile, durable.
Tip: For food & beverage, choose polished stainless steel + PTFE diaphragms. For aggressive chemicals, choose PVDF/PTFE.
Steps to sizing a double diaphragm pump:
- Determine required flow rate (L/min or m³/h).
- Check the system head (m) and back pressure.
- Match inlet/outlet port size to piping system.
- Confirm viscosity and solids size vs pump tolerance.
- Verify available air supply pressure and consumption.
Formula:
Where:
- Q = flow rate
- V = volume per stroke
- t = stroke time (controlled by air supply)
Yes. Because AODD pumps are air-driven and spark-free, they are suitable for ATEX-certified hazardous zones.
- No electric motor = no risk of ignition.
- Materials can be selected for chemical resistance and conductivity.
- Always check the ATEX classification of the pump body and diaphragm.
- Use a pulsation dampener on the discharge side.
- Keep suction lines short and straight.
- Operate with steady air pressure.
- Use flexible connections to reduce vibration transfer.
- For noise-sensitive environments, consider sound enclosures.
Key features that ensure long service life and reliability when integrating AODD pumps into machines:
| Feature | Benefit for machine integration |
| Robust diaphragm material (PTFE, Santoprene) | Resists wear, chemical attack, and high cycles |
| High-quality check valves and seats | Minimize leakages and prevent backflow |
| Reinforced pump housing / bearing support | Handles vibration and mechanical stress |
| Modular design | Easy replacement and upgrades without redesigning the machine |
| Low pulsation design | Reduces stress on connected piping and components |
| ATEX-certified options | Safe operation in explosive or hazardous environments |
- Right sizing: Choose a pump that matches the required flow rate and pressure; oversized pumps consume unnecessary amounts of compressed air.
- Air supply control: Use a pressure regulator to ensure a stable, clean air supply; this prevents waste and wear.
- Material compatibility: Avoid premature wear by choosing chemically compatible materials for the fluid and diaphragm.
- Integration-friendly design: Minimize vibration and pulsation with proper installation; less damage to machine components and lower total costs.
Tip: By selecting the right AODD pump configuration during the design phase, you save on maintenance and energy costs for the end user.
Custom options at BEGE include:
- Adapted transmission ratio and torque capacity
- Variable shaft configuration
- Stainless steel output shaft
- Reinforced bearings for long service life
- Step-up ratios for higher flow rates
- High protection rating coatings
- Accessories and sensors: MIG encoder, IEC flange, free input shaft, backstop, reaction arm, cooling unit
Tip: When requesting a customized double diaphragm pump, always provide:
- Fluid type and viscosity
- Operating temperature range
- Required flow rate and head
- Environmental conditions (e.g. ATEX zone, hygiene requirements)
View All Pneumatic Pumps
BEGE supplies BSK air-operated diaphragm pumps for efficient and reliable transfer of various fluids and powders in industrial applications.