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DC Micro Solenoid Valve for Medical Devices

Short Description:

The DC Micro Solenoid Valve is a miniature solenoid valve designed for medical rehabilitation, smart home appliances, and pressure-boosting equipment. As a Normally Open (NO) valve, it remains open when de-energized and closes immediately upon power-up. It is a critical component for safety pressure relief and pneumatic logic switching in devices such as sphygmomanometers and alternating pressure mattresses.

 


  • Normally Open: Open when de-energized for safety relief.
  • Ultra-Compact: 10g lightweight, easy to integrate.
  • Long Life: 200,000+ cycles for long-term durability.
  • Fast Response: < 4s exhaust speed with low power.
  • Medical Grade: Ultra-low leakage for precise measurement.
  • Product Detail

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    Competitive Price

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    XD Medical Solenoid Valve 

    The micro solenoid valve is designed for wearable devices like blood pressure monitors. Its normally open structure releases air during power loss or device failure, preventing continuous pressure on the arm. With high airtightness, it ensures stable, accurate readings by eliminating pressure fluctuations. Reinforced for high-frequency cycles, it maintains consistent exhaust speed. Its low power consumption and minimal heat allow it to be placed near sensitive electronics.

    Medical-Grade Leakage Control

    Rapid Safety Pressure Relief

    Industrial-Grade High-Cycle Durability

    medical-grade-solenoid-valve-for-blood-pressure-monitor-3-7v

    Technical Specifications

    XD Medical Solenoid Valve 

    *OEM/ODM Service available, contact us to get more details!
    Rate Voltage DC 3 DC 3.7V DC 6V
    Rate Current 100±10%mA 82±10%mA 75±10%mA
    DC Resistance 30±10%Ω 45±10%Ω 80±10%Ω
    Power 0.30W 0.30W 0.45 W
    Air Tap O.D φ 3.0mm
    MaximumPressure 40KPa(300mmHg)
    Medium Air
    Exhaust Speed < 4sec (from 300 to 15 mmHg in a 100cc tank)
    Life Test

    ≥200,000 Times (ON 5秒,OFF 5秒)

    Leakage

    <3mmHg/min ( under 300 mmHg in a 100cc tank )

    OperationTemperature

    0 ~50°C 30%to 85%RH

    Weight 10g

    Specification Engineering Drawing

    medical-micro-solenoid-valve-technical-drawing-dimensions

    Engineering Integration Notes

    Fail-safe Exhaust Logic

    This solenoid valve uses a normally open design to provide "power-off protection." In wearable medical devices, it ensures that in the event of a power failure or shutdown, the valve automatically opens the airway, releasing pressure on the body (e.g., arm) to prevent harm.

    Airtightness Stability for Medical Monitoring

    The XD series is optimized for silent diagnostic environments, like blood pressure monitoring. Its high airtightness prevents pressure fluctuations from interfering with precision sensors, ensuring stable and accurate measurements during the pressure-holding phase.

    Dynamic Micro-cycle Reliability

    Designed for high-frequency micro-cycle operations, this valve performs well in "inflate—hold pressure—exhaust" cycles. It maintains consistent exhaust response speed and sealing performance, even with frequent use.

    Ultra-lightweight Integration

    With a compact size and low weight, this valve fits easily into space-constrained wearable devices. Its low power consumption generates minimal heat, allowing it to be placed near sensitive electronics without the need for extra cooling space.

    Specialized Pneumatic Compatibility

    The valve is designed for medical-grade tubing, ensuring secure connections. It also adapts to applications requiring fast airflow switching, such as essential oil diffusers and boost technologies.

    miniature-normally-open-solenoid-valve-internal-coil-structure

    Product Applications

    Application Scenario Key Benefit for the Design Recommended Power Source
    Handheld Beauty Devices

    The ultra-compact footprint simplifies high-density PCB layouts, enabling a smaller overall product size.

    Lithium-ion Battery

    Blood Pressure Monitors

    Provides an immediate atmospheric vent during power loss or standby, ensuring medical-grade safety exhaust.

    Regulated DC Power

    Smart Pet Feeders

    Maintains a reliable vacuum seal within the hopper to prevent food oxidation and moisture buildup.

    Battery Pack or Adapter

    Rhythmic Massagers

    Reinforced internal structure handles constant inflation/deflation cycles without physical performance loss over time.

    DC Power Supply

    Aromatherapy Diffusers

    Controlled airflow switching improves the consistency and response time of essential oil misting systems.

    Regulated DC Power 

    Tea set application using a food-grade micro DC water pump for automatic water dispensing.

    Tea table

    Small vacuum packing appliance using a miniature DC pump for air extraction.

    Vacuum packing machine

    Bottled water dispenser application requires a safe, food-grade mini electric water pump.

    Water dispenser

    Automatic foam hand sanitizer dispenser powered by a micro electric pump.

    Foam hand sanitizer

    Electric wine decanter utilizing a small DC pump for fluid circulation.

    Electric decanter

    Dishwasher appliance utilizing a reliable DC water pump for water circulation.

    dishwasher

    Manufacturing Quality & Compliance

    At Pinmotor, we implement rigorous quality control to ensure that every XD Medical solenoid valve integrates seamlessly into your medical and consumer production lines. Our manufacturing process complies with the most stringent global standards for precision and environmental safety:

     

    Official ISO 9001:2015 Certification Badge for Pinmotor high-quality manufacturing.

    ISO 9001:2015 Certified

    Our quality management system guarantees consistent performance for every batch, covering the entire process from raw material inspection to the final functional testing of each micro valve.

    Pinmotor Automotive Quality Management System (IATF 16949:2016 Certified)

    IATF 16949 Compliant

    We apply automotive-grade process discipline to maintain ultra-low defect rates and long-term mechanical reliability, ensuring stable operation in portable medical and high-frequency massage applications.

     

    reach

    RoHS & REACH Fully Compliant

    All materials used in the XD series are free from hazardous substances. This ensures your end-products are fully compliant with EU and North American environmental regulations for medical and consumer-grade electronics.

    Technical Note: Full documentation, including material safety data sheets (MSDS) and compliance certificates, is available upon request for your engineering audit.

    We supply more than just product, we engineer solutions optimised to suit your application requirements.

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  • Q1: How does a normally open micro solenoid valve work in medical devices?

    Answer: As a “Normally Open” (NO) component, the valve stays in an open position by default when there is no power. When energized, it instantly closes to block airflow or build pressure. This mechanism is crucial for devices like blood pressure monitors, where the valve ensures the system can safely vent air and release pressure immediately if power is lost.

    Q2: What are the typical applications for ultra-compact DC solenoid valves?

    Answer: Due to its miniature 10g design, this valve is primarily used in portable and wearable health technology. Common applications include electronic sphygmomanometers (blood pressure cuffs), medical massage chairs, and alternating pressure relief cushions for rehabilitation. It is also widely integrated into smart home products like essential oil diffusers and beauty massage tools.

    Q3: What makes these miniature solenoid valves suitable for wearable healthcare technology?

    Answer: These valves are engineered with an ultra-compact footprint and minimal weight, specifically for integration into portable devices where space is limited. Their design supports high-density component layouts in wrist-worn monitors and portable rehabilitation equipment without adding significant bulk.

     
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