Micro Diaphragm Pump

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Discover BODENFLO’s miniature diaphragm vacuum pump, miniature diaphragm air pump offering free flow rates from 0.5 to 22 L/min, pressures of 0.5 to 3.5 bar, vacuum levels from -30 to -85 kPa, and weight from 18g to 305g.

Our micrpumps stand out for their compact size, oil-free operation, low power consumption, and high performance. , they are ideally suited for medical and beauty equipment.


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Shenzhen Boden Technology Development Co., Ltd. (Brand: BODENFLO) is the TOP1 high-flow miniature diaphragm pump manufacturer in China, with over a decade of manufacturing experience in the industry.

As a testament to our commitment to quality and innovation, we are ISO9001 certified, and all our products carry CE and ROHS certifications. With our core patents, we stand as a reliable and trustworthy micro pump supplier in China.


Favorable costs – helping you save on procurement expenses.

Flexible order quantities – reducing purchasing risks for adaptable procurement strategies.

Tailored solutions – meeting specific requirements to enhance functionality and efficiency.

Stocked inventory – ensuring rapid delivery for prompt product receipt.

Comprehensive inspection – guaranteeing quality with rigorous testing and adherence to international standards.

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What to Consider When Buying a Micro Diaphragm Pump?

DC micro diaphragm pumps are versatile and essential components in various applications, from medical devices to industrial processes. Before purchasing these specialized pumps, here’s what you should consider:


1.Application Requirements: Understand the specific needs of your application, including flow rate, pressure, vacuum capabilities, and compatibility with the fluids being handled.

2.Compliance with Standards: Ensure that the micro diaphragm air and vacuum pump meets relevant industry standards and certifications, reflecting quality and reliability.

3.Material Selection: Choose materials that are compatible with the pumped media, considering factors like corrosion resistance, chemical compatibility, and temperature tolerance.

4.Energy Efficiency: Evaluate the energy consumption and efficiency of the pump, especially if it’s intended for continuous or long-term operation.

5.Noise Considerations: If noise control is essential, look for pumps designed with noise reduction features, ensuring a quieter operation.

6.Customization Options: Explore customization possibilities to tailor the pump’s characteristics to your specific needs, such as custom flow rates, pressure, vacuum, connections, or other specialized features.

7.Maintenance and Support: Consider the ease of maintenance and availability of support, including warranties, spare parts, and technical assistance.

8.Cost Analysis: Balance the initial purchase price with ongoing operational and maintenance costs, considering the total value and return on investment.

9.Supplier Reputation: Select a reputable supplier with proven experience and expertise in micro diaphragm pumps, ensuring quality products and support.

micro pumps 3D 3D drawing

What Are the Categories of Micro Diaphragm Pumps?

Overall Evaluation:

  • Rotary Diaphragm Pumps are best for cost-sensitive, low-value commercial products.
  • Eccentric Diaphragm Pumps provide a versatile solution for medical and industrial applications, with precise control and flexibility in handling various media.
  • Linear Diaphragm Pumps are favored for their quiet operation and efficiency, particularly in wastewater aeration and aquaculture.

Each category has distinct characteristics, advantages, and disadvantages, catering to specific needs and applications. Understanding these categories helps in selecting the right micro diaphragm pump for your requirements.

Rotary Diaphragm Pumps-bodenflo

Rotary Diaphragm Pumps

Utilizes a rotating mechanism that moves the diaphragm in a circular motion, creating a continuous flow. The design often includes a cam that drives the diaphragm’s movement.

Smooth and consistent flow, ability to handle various pressures, and adaptable for both gases and liquids; Ideal for commercial applications; cost-effective.

Short life span usually only a few hundred hours; flow rates limited to 6L; best for low-value products.


Eccentric Diaphragm Pumps

Employs an eccentrically mounted drive shaft that actuates the diaphragm, creating a pulsating flow. The eccentric motion allows for precise control over flow rates and pressures.

Flexibility in handling different media; precise control; suitable for various applications. Single-head pumps offer flow rates up to 22L, pressures to 4 bar, vacuum up to -85 kPa. By adding pump heads or changing sizes, such as dual or multi-head pumps, flow rates can reach 60L/min, vacuum up to 100 kPa. Flexible assembly allows for multiple parameters, motor options, and longer lifespan(1000-20,000 hours).

Complexity may increase costs; not for applications needing smooth flow.

Linear Diaphragm Pumps-bodenflo company

Linear Diaphragm Pumps

Utilizes electromagnetism to apply force to a diaphragm or piston, creating a reciprocating linear motion that displaces air or pumps liquid. Equipped with linear magnetic and vibrating armature motor types.

Quiet and efficient operation; fewer wearing parts, long-life, and low-maintenance; suitable for low differential pressure applications; used in sewage aeration, greywater treatment, aquaculture, and medical devices; flow rates up to 22.1 cfm (625 l/min).

Performance limited to the strength of the induced magnetic field; max pressure up to 10.2 psi (0.7 bar), max vacuum 16.2 in.Hg (-550 mbar).

Can Micro Diaphragm Pumps Generate Both Pressure and Vacuum?

Micro diaphragm pumps are typically composed of an inlet and an outlet, connected by a reciprocating diaphragm. As the diaphragm moves back and forth, it generates a vacuum at the inlet and pressure at the outlet. This dual-action mechanism allows the pump to serve various applications requiring both pressure and vacuum. Here’s how this unique design can be utilized:

Simultaneous Pressure and Vacuum:

Application: In laboratory automation, simultaneous pressure and vacuum control can be used for precise fluid handling, such as in liquid dispensing and sample preparation.
Benefit: Enables complex processes with high precision and repeatability.
Environment: Often found in medical laboratories, research facilities, and pharmaceutical manufacturing.

Pressure Only:

Application: Utilized for pushing fluids through filtration systems, supplying pressure in hydraulic systems, or inflating devices.
Benefit: Provides controlled and consistent fluid flow.
Environment: Common in industrial manufacturing, water treatment, automotive, and healthcare equipment.

Vacuum Only:

Application: Used for creating a vacuum in suction systems, vacuum packaging, or evacuating air from sealed environments.
Benefit: Enables processes that require the removal of air or gases, ensuring a controlled environment.
Environment: Typical in food packaging, medical suction devices, and semiconductor manufacturing.

Switchable Pressure and Vacuum:

Application: Some pumps allow switching between pressure and vacuum modes, catering to applications that require both functionalities at different stages.
Benefit: Enhances flexibility and adaptability in handling various tasks within a single system.
Environment: Ideal for multifunctional laboratory equipment, process automation, and specialized industrial machinery.

How to Read Miniature Diaphragm Pump Curve Charts?

Elements of a Pump Curve

 The main elements include pressure, vacuum, flow rate, and current. These are represented on the X and Y axes, providing insights into the pump’s operational parameters.

4 Common Maximums

The maximum vacuum, pressure, and flow rate are critical parameters measured under no-load conditions, reflecting the pump’s inherent capabilities. The maximum current, on the other hand, represents the highest value observed during load testing.

How to read Pressure-Flow Curve?

 the gray point is the flow rate of 2.2L/min at a load of 2.1bar.

How to read Vacuum-Flow Curve?

the gray point is the flow rate of 2.5L/min at a load of -20kpa vacuum.

pressure-flow curve
vacuum-flow curve

What Are the Common Applications of Micro Diaphragm Pumps?

Micro diaphragm pumps are renowned for their compact design, lightweight construction, and exceptional performance. Engineered for optimal efficiency, these pumps offer the advantage of oil-free operation, ensuring clean and contamination-free handling of various media. Their low power consumption and high-performance capabilities make them the preferred choice for OEM solutions, particularly in handheld and portable equipment. The integration of cutting-edge technology and adherence to stringent quality standards further enhance their appeal across diverse applications.

Medical Device Integration

  • Blood Pressure Gauges: For accurate monitoring and control of blood pressure.
  • Negative Pressure Wound Therapy: To promote healing through controlled suction.
  • Ventilators: Ensuring precise airflow for respiratory support.

Aesthetics and Beauty Equipment Integration

  • Microbubble Treatments: For skin rejuvenation and cleansing applications.
  • Vacuum Suction Devices: Used in facial treatments for exfoliation and pore cleansing.

Analytical and Diagnostic Applications

  • Ion Chromatography with Mass Spectrometry (IC-MS): Enhancing accuracy in chemical analysis.
  • Waste-Handling: Ensuring safe disposal and management of laboratory waste.

Inkjet Printing

  • Degassing of Inks: For consistent ink quality in various printing technologies such as Drop on Demand (DOD), Continuous Inkjet (CIJ), 3D, and Bioprinting.
  • Ink Dispensing: For controlled and precise application of inks.

How to Customize a Micro Diaphragm Pump?





Identify the Application Requirements

Specify the operating voltage to ensure compatibility with the system’s electrical requirements, considering factors like power supply and energy efficiency.

Determine the required flow rate based on the application’s needs, ranging from low to high flow demands.

Identify the necessary pressure and vacuum levels for optimal performance.

Consider the type of media (liquid, gas, or both) the pump will handle to select appropriate materials.

Select the Pump Type

Suitable for low-value commercial products with limited parameters and flow rates usually not exceeding 6L.

Ideal for applications requiring high flow rates and pressures.

Best for applications needing high flow rates and low pressure.

Choose the Motor Type

Brush diaphragm pump: Cost-effective and suitable for less demanding applications where precise speed control is not critical.

Brushless diaphragm pump: Higher cost but provides long lifespan and precision, ideal for medical and industrial applications.

Premium option for rapid acceleration and deceleration, designed for applications requiring quick response. low-speed operation suitable for small parameters, compact design, and low noise.




Choose the Diaphragm/Valve Material

Known for its excellent heat, ozone, and weather resistance, EPDM is suitable for a wide range of applications, including those involving hot water and steam.

Offers outstanding resistance to chemicals, oils, and temperature extremes. It is commonly used in applications requiring compatibility with hydrocarbons and strong acids.

Also known as Teflon, PTFE is renowned for its chemical resistance and non-reactive properties. It is ideal for applications requiring cleanliness and compatibility with various substances.

Consider the Design Features

Select a design that fits the space constraints and weight limitations of the equipment.

Consider noise-sensitive environments and choose a design that minimizes sound emissions.

Ensure contamination-free handling by opting for oil-free designs.

Evaluate Customization Options

For applications requiring varied flow rates and pressures.

Choose materials that are compatible with the media and environmental conditions.

For precise control over flow, pressure, and vacuum.



Collaborate with a Trusted Manufacturer

Work closely with engineers and technical experts to ensure the customized design meets all specifications.

Engage in prototyping and rigorous testing to validate the customized pump’s performance.

Ensure that the customized pump meets all relevant industry standards and certifications.

Consider After-Sales Support

Understand the warranty terms and maintenance support provided by the manufacturer.

Ensure the availability of essential spare parts for future maintenance and repairs.

Ensure contamination-free handling by opting for oil-free designs.

Custom Micro Diaphragm Pump with Easy

At BODENFLO, We turn complex Into Simple! Follow the following  3 steps to start today!

Tell Us What You Need

Tell us as specific as possible of your needs, provide the parameter, reference picture and share your idea.

Get Solution & Quote

We will work on the best solution according to your requirements, the specific quote will be provided within 12 hours.

Approve for Sample/Mass Production

We will start production after getting your approval and deposit, and we will handle the shipment.


Contact us to get a free quote and more expertise about custom dc miniature diaphragm air vacuum pump. Your project will meet a right solution with BODENFLO.

Ask For A Quick Quote

We will contact you within 8 hours, please pay attention to the email with the suffix “@bodenpump.com”

The ULTIMATE Guide to Perfect Micro Pumps for Your Devices!

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