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Mini 3-Way Solenoid Valve for Wearable Devices
Customized Service
To provide customers with quality products and satisfactory service
3-XA 2-Position 3-Way Flat-Head Solenoid Valve
This mini 3-way solenoid valve is used in portable medical devices like electronic blood pressure monitors and respirators to control airflow accurately. Its compact size and leak-free operation allow for seamless integration, ensuring precise measurements and smooth air control. In beauty care devices such as smart sprayers and liquid infusion tools, the valve manages small fluid volumes, enabling precise dosing and consistent performance in handheld, space-constrained applications.
Technical Specifications
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3-XA Micro solenoid valve |
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| *OEM/ODM Service available, contact us to get more details! | |||||
| Rate Voltage | DC 3 | DC 3.7V | DC 6V | DC 12V | DC 24V |
| Rate Current | 120±10%mA | 105±10%mA | 100±10%mA | 100±10%mA | 120±10%mA |
| DC Resistance | 25±10%Ω | 35±10%Ω | 60±10%Ω | 120± 10%Ω | 200± 10%Ω |
| Power | 0.36 W | 0.39 W | 0.6 W | 1.2 W | 2.88W |
| 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 seconds，OFF 5 seconds) |
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| Leakage |
<3mmHg/min ( under 300 mmHg in a 100cc tank ) |
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| OperationTemperature |
0 ~50°C 30%to 85%RH |
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| Weight | 15g | ||||
Specification Engineering Drawing
![Technical dimension drawing of a miniature 3-way solenoid valve with a 25.3mm length, 12mm width, and 14.3mm height[cite: 3, 12, 19]. It features a Ø3.0mm air tap [cite: 22] and 210mm UL1571 26AWG lead wires for medical and appliance integration[cite: 13, 20].](/uploads/DC-3V-miniature-solenoid-valve.jpg)
Product Applications
| Application Scenario | Key Benefit for the Design | Recommended Power Source |
| Digital Sphygmomanometers |
The "Normally Open" structure ensures automatic pressure relief during power-off or standby for safety. High airtightness supports stable pressure monitoring. |
Regulated DC Power / Battery |
| Handheld Beauty Devices |
Small and lightweight design allows for integration into narrow housings, reducing overall device weight. |
Lithium-ion Battery |
| Essential Oil Diffusers |
Fast response for direct air pressure release helps maintain stable misting output. |
Regulated DC Power / Adapter |
| Rhythmic Massagers |
Durable structure supports high-frequency inflation and deflation cycles, extending the product service life. |
DC Power Supply / Battery Pack |
| Booster Technology Equipment |
Three-way configuration enables fast pressure relief and air path switching, suitable for space-constrained pneumatic systems. |
Battery Pack or Adapter |
Tea table
Vacuum packing machine
Water dispenser
Foam hand sanitizer
Electric decanter
dishwasher
Manufacturing Quality & Compliance
We apply standardized production workflows to integrate our micro solenoid valves into medical and consumer hardware production lines. Our manufacturing meets international standards for precision and environmental safety.
ISO 9001:2015 Certified
Our management system covers the full production cycle—from raw material inspection to 100% functional testing of each valve. This maintains batch-to-batch consistency for high-volume supply.
IATF 16949 Compliant
We follow automotive-grade process discipline to maintain mechanical reliability. This supports stable operation in portable medical devices and high-frequency massage equipment.
RoHS & REACH Fully Compliant
All valve materials are free from hazardous substances. Components comply with EU and North American environmental regulations for medical and consumer electronics.
Technical Note: Full documentation, including material safety data sheets (MSDS) and compliance certificates, is available for engineering audits upon request.
About the Author
Joan Zhong — Senior Technical Sales Lead at Pinmotor (Pincheng Motor)
With over 6 years of hands-on experience in the micro-motor and pump industry, Joan Zhong specializes in integrating precision pneumatic solutions for the medical and healthcare sectors. Having worked closely with R&D teams to develop the 370 series micro-pumps, Joan offers deep expertise in noise control, pressure optimization, and life-cycle durability.
Joan’s commitment to E-E-A-T principles ensures that every technical guide provided by Pincheng is grounded in real-world engineering data and factory testing.
Connect on LinkedIn: Joan Zhong on LinkedIn
Expertise: DC Micro Motors, Diaphragm Air Pumps, Medical Fluid Control.
We supply more than just product, we engineer solutions optimised to suit your application requirements.
Q1: Can the voltage and lead wire length be customized for our device?
A: Yes. We can customize the rated voltage, resistance, and wire length to meet your specific PCB requirements.
Q2: How do you ensure the reliability of these valves for medical use?
A: Every valve undergoes strict testing, including a life cycle rating of over 200,000 operations. We use robust coil encapsulation and anti-fatigue springs to ensure consistent performance.
Q3: Is it possible to modify the air tap diameter or nozzle shape?
A: The standard air tap O.D. is 3.0mm. However, we can adjust the nozzle dimensions or design other parameters based on your specific pneumatic connection needs.
Q4: How do you guarantee zero-leakage performance for blood pressure monitors?
A: Each unit is tested for airtightness. We guarantee a leakage rate of less than 3mmHg/min under 300mmHg pressure to ensure high precision for diagnostic measurements.
Q5: Can this valve be used in high-humidity environments like diffusers?
A: Yes. These valves are designed to operate reliably in humidity ranges from 30% to 85% RH. They are proven components for essential oil machines and beauty instruments.
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