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SHENZHEN KEYTO FLUID TECHNOLOGY CO., LTD.
SHENZHEN KEYTO FLUID TECHNOLOGY CO., LTD.

Keyto miniature proportional valve is a microvalve developed by the medical industry, IVD, or laboratory to control the fluid proportion, especially suitable for proportional control in medical ventilators or fluid control in ventilation systems, like oxygenerator, reservoirs, anesthesia delivery & monitors, pressure and flow control, mass flow controller.

Types of Miniature Proportional Valves

PV02 Series Proportional Valve
PV02 Series Proportional Valve
The PV02 series proportional valve is a small diameter series in Keyto's proportional valve . With a range of flow paths from 0.15 mm to 1.6 mm. The valve is suitable for precise flow control.
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PV03 Series Proportional Valve
PV03 Series Proportional Valve
As one of our high precision proportional valves, PV03 series play an important role in ventilator. With a range of flow paths from 2.3mm to 4.5mm in the spool and a maximum flow rate of 180L/min...
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Miniature Proportional Valve Features

  • 1

    Precise control of a wide range of flow rates

  • 2

    Maximum working pressure up to 1.0MPa for a wide range of operating conditions

  • 3

    Accurate and stable flow control for a wide range of media

  • 4

    Stable and reliable, long lifetime

Miniature Proportional Valve Applications


The applications of miniature proportional valve is as follow:

Keyto micro proportional valve is mainly used in gas chromatography, mass spectrometry, respirator, oxygen generator/storage tank, anesthetic gas transmission and monitoring, pressure and flow control, mass flow control and other equipment. Our miniature proportional valves are innovative solutions that help healthcare equipment manufacturers succeed.

Miniature Proportional Valve Applications

Why Choose Keyto As Your Miniature Proportional Valves Supplier?

Choosing Keyto as Your Miniature Proportional Valves Supplier: The Advantages and Benefits


When it comes to choosing a supplier for miniature proportional valves, there are several factors to consider. Among the many options available, Keyto stands out as a reliable and innovative supplier. With a wide range of products, including miniature proportional valves and miniature proportional pinch valves, Keyto offers several advantages that make them an excellent choice for your valve needs, particularly in the medical device industry.


  • Expertise and Experience:

Keyto has extensive expertise and experience in the field of miniature proportional valves. They have been providing high-quality valves to various industries, including the medical device sector, for many years. Their team of experts understands the intricate requirements of medical applications and can offer invaluable support and guidance in selecting the most suitable valves for your specific needs.


  • High-Quality Products:

Keyto is committed to delivering top-quality products. Their miniature proportional valves are manufactured using advanced technologies and processes to ensure precision, reliability, and durability. These valves undergo rigorous testing to meet international standards and regulations, ensuring consistently high performance and longevity.


  • Customization Options:

Keyto understands that different applications have unique requirements. To accommodate this, they offer customization options for their miniature proportional valves. Whether you need specific flow rates, pressure ranges, or electrical control options, Keyto can tailor their valves to meet your exact specifications. This level of customization ensures optimal performance and seamless integration into your medical devices.


  • Cutting-Edge Technology:

Keyto stays at the forefront of technological advancements in miniature proportional valves. Their commitment to innovation allows them to develop and offer state-of-the-art valves that incorporate the latest features and functionalities. This ensures that their valves are compatible with the most advanced medical devices and systems, providing precise and reliable control of fluid flow.


  • Compliance with Medical Standards:

As a supplier to the medical device industry, Keyto understands the importance of compliance with stringent standards and regulations. Their miniature proportional valves are designed and manufactured to meet the specific requirements of medical applications. They understand the criticality of precision, accuracy, and reliability in medical devices and ensure that their valves adhere to industry standards, such as ISO 13485 for medical devices.


  • Customer Support and Service:

Keyto is known for its exceptional customer support and service. Their team goes above and beyond to assist customers in selecting the right miniature proportional valves for their applications. From initial consultation to after-sales support, Keyto’s knowledgeable staff is always available to answer queries, provide technical assistance, and ensure customer satisfaction.



Keyto stands out as an ideal supplier for miniature proportional valves, including miniature proportional pinch valves, and proportional valves for medical devices. With their expertise, high-quality products, customization options, cutting-edge technology, compliance with medical standards, customer support, and competitive pricing, Keyto provides a comprehensive and reliable solution for your valve needs. By choosing Keyto as your supplier, you can ensure the success of your medical device projects, with precise and reliable fluid control that meets industry standards and exceeds your expectations.


Miniature Proportional Valves FAQs

  • How miniature proportional valve works?

    A miniature proportional valve adjusts output pressure or flow in proportion to input pressure or flow, for instance, if the input doubles, the output will likewise double. It is possible to link miniature proportional valves so that the output from one serves as the input for another.

  • What is a miniature proportional valve used for?

    These miniature proportional valves are used in applications where high resolution, high volume flow, and low hysteresis is needed;

    These miniature proportional valves are used in hydraulic systems;

    These miniature proportional valves are used in earthmoving machines;

    These miniature proportional valves are used in robotics;

    These miniature proportional valves are used in earthmoving machines;

    These miniature proportional valves are used inMachine tools and paper production.

  • How do you select a miniature proportional valve?

    Miniature proportional control valve is a kind of electric signal input continuous, proportional control hydraulic system flow, pressure and direction of the control valve, its output flow and pressure can not be affected by load changes.


    Compared with ordinary hydraulic components, miniature proportional valve has the following characteristics:


    (1) The electrical signal of miniature proportional valve is easy to transmit and can easily realize the remote control.


    (2) Miniature proportional valve can continuously and proportionally control the pressure and flow of the hydraulic system, realize the control of the position, speed and force of the actuator, and can reduce the impact of pressure transformation.


    (3) Miniature proportional valve can be reduced the number of components and simplified the tube number. 


    Typical Applications of miniature proportional valve: Ventilators, Oxygenerator/Reservoirs, Anesthesia Delivery & Monitors,Gas chromatography, Pressure and Flow Control etc.


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