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3 Way Valve

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What Is a Micro 3-Way Air Valve?

A micro 3-way air valve (miniature 3-port solenoid valve) is an electromechanical control component featuring three interconnected ports (typically Inlet, Outlet/Working, and Exhaust) that allow a pneumatic system to alternate between pressurizing and venting air.
Unlike 2-way valves that simply open or close a single flow path, 3-way valves dynamically switch circuits. In the de-energized state, flow may pass between port 1 and port 2 while port 3 is sealed; when energized, the internal plunger shifts to connect port 2 and port 3 while sealing port 1. This rapid switching capability is vital for medical blood pressure cuffs, breast pumps, and dynamic compression devices where controlled deflation is as critical as inflation.

SC0519AVG 3-Way Micro Solenoid Air Valve (3V/6V/12V)

Micro & Miniature 3-Way Air Valves for OEM Equipment

Skoocom supplies high-precision DC miniature 3-way air valves and solenoid valves engineered for medical devices, wearable healthcare monitors, beauty equipment, breast pumps, and automated pneumatic systems.

 

Our micro 3-way valve range includes normally closed (NC) and normally open (NO) configurations with 3V, 6V, 12V, and 24V options. Designed with three distinct ports, these valves seamlessly manage fluid switching, pressure inflation, and rapid atmospheric exhaust with ultra-low power consumption and zero leakage.

 

Not sure which 3-way valve structure or flow rate fits your project? Send us your required working pressure, flow rate, voltage, response time, and installation space for an expert engineering recommendation.

 

 
Micro 3-way valve Models
Model
sC519GF
SC0520RVG
SC0626GF
SC0726GF
products

SC0519GF

SC0520RVG

SC0626GF
SC3203XPV
Voltage DC3/6/12V DC4.5/6V DC3/6/12/24V SC6/12V
Current 375/300/141mA 410/371mA 600/333/175/150mA 364/353mA
Pressure 350mmHg -450mmHG 350mmHg 350mmHg
Leakage 3mmHg/min from 300mmHg at 100cc tank      
Dimensions 25.05*14.3*12.6mm 33.4*15*13mm 39.4*20*16mm 41.5*20*16mm
Mode Normally opened Normally closed Normally closed Normally closed
 

Get a Pump Recommendation

Find the Right 3-Way Air Valve

 

Selecting the optimal miniature 3-way valve requires matching operating conditions to internal pneumatic resistance and system cycle requirements. Key parameters to evaluate include:

 

Valve Circuit Function (NC vs. NO): Determine whether your system requires a Normally Closed (NC) 3-way valve (ports closed when unpowered) or a Normally Open (NO) configuration depending on fail-safe venting requirements.

Operating Pressure Range: Confirm both the maximum working pressure and differential pressure required to ensure positive sealing across all three ports without blow-by leakage.

Airflow Rate & Exhaust Speed: Evaluate the required flow capacity and evacuation time, particularly for venting cycles where exhaust port dimensions dictate system deflation speed.

Rated Voltage & Coil Power: Choose from standard 3V, 6V, 12V, or 24V DC configurations. Low-power pulse solenoid options are ideal for battery-powered portable handheld equipment.

Response Time & Sealing Integrity: For medical instrumentation, rapid actuation (<20 ms) and ultra-low internal leak rates (<0.1 mL/min) ensure precise, repeatable pressure control.

Duty Cycle & Thermal Stability: Specify whether the valve operates continuously (100% duty cycle) or in rapid intermittent pulses so coil insulation and heat dissipation are correctly balanced.

 

Typical Applications

 

Medical Blood Pressure Monitors (NIBP)

Miniature 3-way solenoid valves provide precise inflation of arm cuffs followed by rapid, controlled pressure venting to ensure accurate systolic and diastolic readings.

Breast Pumps & Lactation Equipment

Compact 3-way valves manage alternating vacuum suction and atmospheric release cycles, balancing gentle pneumatic pulses with ultra-quiet operation (<45 dB).

Beauty & Personal Care Instruments

Micro 3-way air valves coordinate suction creation and rapid air venting in facial blackhead removers, microdermabrasion, and skin treatment tools.

Gas Sampling & Analytical Equipment

Chemically stable diaphragm-sealed 3-way valves direct calibration gases and sample streams without cross-contamination in portable environmental monitors.

Smart Inflatable & Wearable Medical Devices

Precision 3-way valves regulate multi-channel air chambers in dynamic compression therapy boots, anti-bedsore mattresses, and wearable orthopedic braces.

 

OEM & Customization Support

 

 

Standard off-the-shelf valves may not match proprietary manifold layouts or tight enclosure dimensions. Skoocom provides comprehensive OEM engineering customization:

 

○ Custom Rated Voltage (3V, 6V, 12V, 24V DC) and Low-Power Pulse Solenoid Coils

○ Specialized Port Geometries (Barb fittings, direct manifold mount, threaded ports)

○ Medical-Grade Elastomer Seals (Silicone, EPDM, FKM for enhanced chemical resistance)

○ Customized Wiring Harnesses, JST Connectors, and Integrated Drive Circuitry

○ Acoustic Dampening and Thermal Optimization for Continuous Operation

 

For OEM projects, we recommend testing customized 3-way valve samples within your physical prototype pneumatic loop prior to mass production tooling setup.

Send Your Requirements

Why Skoocom

Founded in 1998, Shenzhen Skoocom Electronic Co., Ltd. is a national high-tech enterprise with in-house R&D, precision manufacturing, and global marketing capabilities. In 2022 and 2025, it was awarded the title of National "Little Giant" Enterprise (Specialized, Refined, Unique, and Innovative) by the Ministry of Industry and Information Technology of China.

Skoocom focuses on the R&D and production of various types of micro pumps, solenoid valves, and electromagnets, providing professional micro pump and valve solutions and related supporting technical services to enterprises in the fields of medical devices, AI smart home appliances (such as cleaning robots, learning, entertainment and lifestyle robots, 3D printers, smart toilets, kitchen appliances, coffee machines, water purifiers), maternal and child products, medical aesthetics and health, and laboratory research.

The company is headquartered in Shenzhen, with manufacturing bases located in Songshan Lake Intelligent Valley, Dongguan, and Zhong'an Industrial City, Zhaoqing. We operate self-built manufacturing facilities spanning 50,000 ㎡, with a workforce of over 500 staff and multiple state-of-the-art production lines supporting an annual output of 50 million units.

Over more than two decades of exploration and development, Skoocom has established four subsidiaries, each responsible for one of four key sectors: Product R&D, Precision Molding, Precision Rubber, and Liquid Silicone Rubber. This not only creates economies of scale but also continuously strengthens the foundation for Skoocom's growth and expansion by reducing costs, improving service quality, and enhancing innovation capabilities.

The company has introduced a wide range of advanced equipment to ensure that every step—from raw materials to finished products—undergoes rigorous inspection, control, and testing, so that every product can meet the diverse application needs of different customers.

Company Introduction

FAQ

 

Q: What is the main function of a 3-way air valve?

A: A 3-way air valve features three ports to direct, switch, or vent airflow between two distinct paths, allowing a system to alternate between pressurizing and exhausting air.

 

Q: What is the difference between a 2-way and 3-way valve?

A: A 2-way valve controls a single flow path (on/off), whereas a 3-way valve connects an inlet to a working port in one state and vents the working port to an exhaust port in another state.

 

Q: Can Skoocom customize valve port locations and mounting brackets?

A: Yes, custom port orientations, manifold sub-base designs, and mounting configurations can be tailored for high-volume OEM integration.

 

Q: What parameters are required to request a 3-way valve recommendation?

A: Please provide your application, operating pressure, required airflow or exhaust time, voltage, available installation space, and expected duty cycle.

Shenzhen Skoocom Electronic Co.,Ltd has been developing, manufacturing and marketing quality 3 way valve and become well-known as one of the most professional manufacturers and suppliers in China. Equipped with a productive factory and advanced equipment, we warmly welcome you to buy discount 3 way valve made in China here, and customized service is also available.

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