DC 3.7V Miniature Exhaust Valve for Massagers

Short Description:

The 1-XB is a miniature, 1-position 1-way normally opened solenoid valve. It is designed for air medium applications requiring pressure relief or flow control. The unit consists of a metal frame housing a coil and is equipped with an air tap. For electrical connectivity, it utilizes lead wires and a terminal.

Operation Mode: Normally Opened

Medium: Air

Maximum Pressure: 40KPa ( 300mmHg )

Exhaust Speed: Less than 4 seconds (to deflate from 300mmHg to 15mmHg in a 500cc tank)

Airtightness: Less than 3mmHg/min (under 300mmHg pressure in a 500cc tank)

Life Test (Durability): ≥ 200,000 cycles (with a cycle of 5 seconds ON and 5 seconds OFF).

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1-XB Micro solenoid valve

The 1-XB is a miniature, normally opened exhaust valve engineered for space-constrained portable devices. Featuring a compact footprint and rapid pressure relief capabilities, this micro solenoid valve is widely integrated into electronic sphygmomanometers, portable massagers, adult products, and essential oil machines. It delivers precise, stable, and long-lasting airflow control for medical diagnostic, personal care, and booster technology equipment.

Ultra-Light 17g

Rapid Deflation <4s

200K+ Lifespan

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Technical Specifications

1-XB Mini solenoid valve
*OEM/ODM Service available, contact us to get more details!
Rate Voltage	DC 3	DC 3.7V	DC 6V	DC 9V	DC 12V
Rate Current	66±10%mA	60±10%mA	60±10%mA	40± 10%mA	45±10%mA
DC Resistance	45±10%Ω	60±10%Ω	100±10%Ω	225±10%Ω	270± 10%Ω
Power	0.20 W	0.22 W	0.36 W	0.36 W	0.54 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	17g

Specification Engineering Drawing

/images/pyf1-xb-micro-valve-dimensions-drawing.png

Engineering Integration Notes

1、Electrical Integration

Plug-and-Play Connector: The valve comes pre-assembled with a standard HY-2.0 terminal and UL1095 28AWG Red/Black wires. PCB designers should include a matching HY-2.0 vertical or right-angle male header on the board for easy assembly.
Coil Driving & Flyback Protection: As an inductive load, driving this solenoid requires a switching component (like an N-channel MOSFET or a BJT).Crucial: A flyback diode (freewheeling diode) must be placed in parallel with the valve coil on the PCB to protect the MCU/driver from high-voltage spikes when the valve is de-energized.
Power Optimization (3.7V Version): For battery-powered massagers or medical devices, the DC 3.7V version draws approximately 66mA (0.20W). This low current draw allows it to be driven by highly compact, low-power SMD transistors.

2、Firmware & Control Logic

Fail-Safe Operation (Normally Opened): The valve is a 1-position 1-way normally opened (NO) valve. Firmware engineers must note that to hold air pressure in the system, the valve must be actively powered (Energized = Closed). In the event of a system crash or battery depletion, power is lost, and the valve will automatically open to vent the air. This is a critical safety feature for medical sphygmomanometers and massagers to prevent user injury from over-compression.
Duty Cycle limits: The valve has been validated for a lifespan of ≥200,000 cycles using a specific testing pattern: 5 seconds ON, 5 seconds OFF. Firmware routines for cyclic massage rhythms should ideally respect this thermal dissipation window to guarantee maximum longevity.

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Product Applications

Target Application	Specific Core Design Advantage	Recommended Power
Electronic Sphygmomanometers	Normally Open Safety Mechanism: Instantly deflates upon power loss, completely eliminating over-inflation risks to ensure medical-grade patient safety.	Portable Battery / DC Power
Portable Massagers	Industrial-Grade Durability: Effortlessly withstands continuous, high-frequency inflation and deflation cycles, significantly enhancing overall device stability.	Portable Battery / DC Power
Beauty & Adult Products	Ultra-Miniature Architecture: Minimizes the spatial footprint to integrate seamlessly into slim, space-constrained housings, optimizing handheld comfort.	Low-Voltage Portable Battery
Essential Oil Diffusers	Instantaneous Rapid Exhaust: Achieves immediate pressure release and booster switching, ensuring an efficient, precise, and even mist output.	Regulated DC Power
Smart Home Appliances	Highly Reliable Airtightness: Establishes a stable internal pneumatic micro-circulation, effectively preventing system pressure overload and slow air leaks.	DC Power or Adapter

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Manufacturing Quality & Compliance

At Pinmotor, we prioritize rigorous quality control to ensure seamless integration into your high-volume production lines. Our manufacturing facility and the PYFP310-XG series comply with the most stringent global automotive and environmental standards:

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

ISO 9001:2015 Certified

Our quality management system ensures consistent product output, from raw material inspection to final functional testing of every foam pump.

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

IATF 16949 Compliant

We leverage automotive-grade process discipline to guarantee ultra-low defect rates and long-term reliability in consumer electronic applications.

RoHS & REACH Fully Compliant

All materials used in the 310G series—including the motor brushes, diaphragm, and housing—are free from hazardous substances, ensuring your end-product is ready for the EU and North American markets.

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

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Is this component suitable for modern, ultra-portable medical gear?

Yes, its “wrist valve” architecture and lightweight frame make it a preferred choice for space-constrained devices. It is widely integrated into portable sphygmomanometers and beauty instruments where maintaining a minimal footprint is critical for the end-user experience.

Can the valve be tailored to fit my specific pneumatic system requirements?

Absolutely. While the standard configuration is a normally-opened model, we offer extensive design flexibility based on your unique project demands. We can adjust various aspects of the component to ensure it integrates seamlessly with your specific air-control or booster technology systems.

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