Diaphragm Pumps Manufacturers online

30 Exporters
29 Manufacturers
1 Distributors

Diaphragm Pumps Suppliers (30)

Manufacturer   Germany   Worldwide
In 1950, the world's first electric barrel pump was named FLUX. In the meantime the undisputed pioneer in the area of barrel pump technology possesses...
Products: Diaphragm Pumps, Stirrers & Agitators, Filling scales, Food Pumps, Flow Totalizers, Acid Pumps, Dispensing Nozzles, Progressive Cavity Pumps
Manufacturer   United States   Worldwide
Products: Diaphragm Pumps, Diaphragm Compressors, Miniature Compressors, Hose Pumps, Reciprocating Compressors, Peristaltic Pumps, Eccentric Pumps
Manufacturer   Germany   Europe
European subsidiary of Nitto Kohki Co., Ltd. a Japanese world-renowned designer and manufacturer of high-tech components, pneumatic tools and quick connecting couplers. The product range...
Products: Diaphragm Pumps, Diaphragm Compressors, Air Compressors, Hydraulic Components, Hose Reels, Reciprocating Compressors, Pneumatic Components
Manufacturer   Germany   Worldwide
Bürkert is present in thirtyfive countries around the world. We also work with a large network of distributors and partners, which means we are as...
Products: Diaphragm Pumps, Control Fittings, Pressure Controllers, Combination Air Filters, Regulators, Lubricators, Butterfly Valves, Shut-Off Valves
Manufacturer   Germany   Worldwide
Products: Diaphragm Pumps, Food Pumps, Pharmaceutical Pumps, Solid Pumps, Frequency Converters, Displacement Pumps, High Pressure Pumps, Stainless Steel Pumps
Manufacturer   Germany   Europe
Products: Diaphragm Pumps, Industrial pumps, Metering Pumps, Safety locks, Vacuum Valves, Piston Metering Pumps, Rotary Vane Pumps, Solenoid Valves
Manufacturer   Germany   Worldwide
Products: Diaphragm Pumps, Plastic Pumps, Machine construction, Immersion Pumps, Laboratory Pumps, Special Pumps
Manufacturer   Switzerland   Worldwide
Products: Diaphragm Pumps, Three-Phase Motors, Servo Motors, Brush Motors, Linear Actuators, Centrifugal Pumps, Stepping Motors
Manufacturer   Germany   Worldwide
Products: Diaphragm Pumps, Alcoholometers, Metering Technology, Metering Pumps, Dry Feeders, Displacement Pumps, Analyzers, Rotary Lobe Pumps
Manufacturer   Germany   Worldwide
Products: Diaphragm Pumps, Piston Diaphragm Pumps, Stirrers & Agitators, Laboratory Centrifuges, Plate Heat Exchangers, Gear Pumps, Tumbling dryers, Hose Pumps
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Diaphragm pumps are well suited for continuous operation

These very wear-free pumps are often used where they have to work for a long time without maintenance. They are also particularly suitable for conveying contaminated media.

Advantages of the diaphragm pump

  • The diaphragm separates the motor from the medium to be pumped. This means that the pumped medium cannot damage the motor, which drastically increases the application possibilities of the pump.
  • This pump works without leakage, as it does not depend on seals due to its design.
  • Since it works without seals, it can convey abrasive materials without wear.
  • It is insensitive to dry running.
  • The diaphragm pump requires little maintenance.
  • It can work with oil-free vacuum.
  • These pumps represent a very robust technology.

How diaphragm pumps work

This type of pump is basically a piston pump in which the function of the piston is replaced by one or two diaphragms. If the diaphragm is pressed into the chamber containing the pumped material, it is displaced and thus conveyed out of the pump. If the diaphragm is deflected to the other side, it creates a vacuum through which the material is sucked in. The diaphragm is deflected electromagnetically, mechanically, pneumatically or hydraulically.

For the electromagnetic deflection of the membrane an oscillating armature is used, whose movement is generated by an electromagnetic alternating field. Pumps with this diaphragm deflection are also called oscillating armature pumps. They have a comparatively good efficiency.

The simplest pumps with mechanical diaphragm deflection are the hand diaphragm pumps. The diaphragm is moved by a crank handle. Larger pumps with mechanical deflection are usually driven by an electric motor via an eccentric and a connecting rod. With micromembrane pumps, the piezo actuators sit directly on the membrane. This design is mainly used for dosing small quantities of liquid.

The pneumatically driven pumps have two diaphragms connected to each other. Each of these membranes separates the liquid chamber from an air chamber. Air is alternately pressed into one of the air chambers. This creates an overpressure in one chamber and a vacuum in the other. The liquid is pressed out of the positive pressure chamber and sucked into the negative pressure chamber. This design requires a lot of energy, because compressed air has to be compressed constantly. It is often chosen for barrel pumps.

A hydraulic drive of the diaphragm is referred to as a piston diaphragm pump. Here the diaphragm is deflected by the piston movement.

Applications of these pumps

  • These pumps can be used to pump both liquids and gases.
  • They are used in disaster control and by the fire brigade as dirty water pumps, as they can also pump sludge within certain limits.
  • Hand diaphragm pumps are used, for example, by the fire brigade to pump small quantities of liquid.
  • In the food and pharmaceutical industries, the relative insensitivity of this type of pump to chemical substances is exploited.