Pumps - Membrane pump
Membrane pumps are suction pumps designed for gentle and reliable transfer of liquids and gases in the laboratory. They separate the pumped medium from the drive unit using a flexible membrane.
Product
Pumps - Membrane pump
Membrane pumps are suction pumps designed for gentle and reliable transfer of liquids and gases in the laboratory. They separate the pumped medium from the drive unit using a flexible membrane.
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Blanc-Labo SA
Milian SA
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Guide and selection support
Membrane pumps are used in laboratories to convey liquids and gases precisely and safely, even when dealing with media containing impurities or abrasive components. Their design protects the drive mechanism from harmful effects caused by the pumped medium.
Important selection criteria for membrane pumps include the drive principle (mechanical, pneumatic, hydraulic, or electromagnetic), flow rate, maximum pressure, and the membrane's chemical compatibility with the medium. Ease of maintenance is also a deciding factor.
LabFinder provides targeted guidance in the search for membrane pumps for various laboratory applications, supporting efficient sourcing of suitable products for specific requirements.
Applications and Benefits
Membrane pumps are used in laboratories for transferring liquids and gases. By employing a flexible membrane that separates the medium from the drive, they offer robustness against impurities and continuous operation. This makes them especially suitable for handling abrasive, viscous, or sensitive media, such as those found in the chemical, pharmaceutical, or food industries.
Selection Criteria
Key criteria when choosing a membrane pump include the drive principle (mechanical, pneumatic, hydraulic, or electromagnetic), flow rate, maximum pressure, and the membrane’s compatibility with the medium to be pumped. Additionally, maintenance requirements and connection options should be considered in the context of the intended laboratory environment.
Variants and Functional Principle
The membrane is actuated using various drive methods, with mechanical, pneumatic, hydraulic, and electromagnetic drives being common. In contrast to piston pumps, membrane pumps eliminate transfer and sealing problems by exclusively moving the medium via the membrane.
Calibration and Maintenance
Routine maintenance includes checking the membrane and seals for wear, as these components affect the pump’s service life. Calibration is often not needed, but system integration should include a functional check, particularly regarding flow rate and pressure.
Operational Limitations
Despite their versatility, membrane pumps have limitations regarding maximum pressure and flow rate. For very high pressures or extremely precise dosing, more specialized types of pumps may be required. In addition, aggressive chemicals may demand special membrane materials, which might have limited availability.
Search Terms and Related Concepts
Membrane pumps, membrane suction pump, membrane liquid pump, membrane gas pump, membrane-membrane pump, membrane pump system, laboratory membrane pump, membrane, suction pump, hydraulic, pneumatic, electric membrane pump, piston pump alternative, pumped medium.
Also known as
electric membrane pump
laboratory membrane pump
membrane-membrane pump
membrane gas pump
membrane liquid pump
membrane pumps
membrane pumps for laboratory
membrane pump system
membrane suction pump
membrane transfer pump
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Frequently asked questions
How does a membrane pump work?
A membrane pump transfers liquids or gases by moving a flexible membrane using mechanical, pneumatic, hydraulic, or electromagnetic drives. The pumped medium is separated from the drive unit, preventing impurities and abrasion from having direct impact on the drive mechanism.
What types of membrane pumps are common in laboratories?
In laboratories, membrane pumps with mechanical, pneumatic, hydraulic, or electromagnetic drives are used. The choice depends on flow rate, pressure requirements, and the chemical compatibility of the membrane with the pumped medium.
What advantages do membrane pumps offer compared to piston pumps?
The key advantage is the separation of the pumped medium from the drive by the membrane, making the pump resistant to impurities and eliminating sealing issues commonly found in piston pumps.
What criteria should be considered when selecting a membrane pump?
Important factors include drive type, flow rate, pressure, chemical compatibility of the membrane, maintenance requirements, and the specific needs of the laboratory application.
What are the limitations of membrane pumps in laboratory use?
Membrane pumps are limited in terms of maximum pressure and dosing precision. Additionally, membrane materials must be compatible with the pumped medium, so some aggressive substances may require special membranes.
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