A 4V solenoid valve is a type of directional control valve widely used in pneumatic systems to control the direction of air flow. Known for its reliability, fast response, and simple integration, the 4V series solenoid valve has become a core component in automation, machinery, and manufacturing industries.
What Is a 4V Solenoid Valve?
The term “4V” refers to a four-way, two-position (or three-position) solenoid valve that operates through electromagnetic control. It controls the flow of compressed air to pneumatic actuators, such as cylinders or rotary actuators, to drive motion in industrial equipment.
A typical 4V valve includes:
Two solenoids or one solenoid with a spring return
Five ports (one air supply port, two working ports, and two exhaust ports)
A spool that shifts position to change the air flow direction
Working Principle of a 4V Solenoid Valve
The 4V solenoid valve operates based on electromagnetic induction:
Signal Activation
When an electrical signal energizes the solenoid coil, it generates a magnetic field that pulls or pushes the valve spool.
Air Flow Switching
The spool movement connects or disconnects internal air passages, directing compressed air from the supply port to one of the working ports. Simultaneously, the opposite port exhausts air through the exhaust outlet.
Return to Initial State
When power is removed, a spring or opposite solenoid returns the spool to its default position, reversing the air flow.
This allows the actuator or cylinder to extend or retract, completing a controlled mechanical motion.
Types of 4V Solenoid Valves
4V110 Series: Compact, suitable for small pneumatic cylinders.
4V210 Series: Standard industrial type, used in automation equipment.
4V310 Series: Medium flow capacity, ideal for large pneumatic actuators.
4V410/4V420 Series: High-flow models for heavy-duty applications.
Different series vary in port size, flow rate, and coil voltage options (AC/DC).
Main Features and Benefits
Fast Response Speed — Typically within 0.05 seconds, ensuring rapid switching.
Stable and Reliable Operation — High-quality seals minimize air leakage and wear.
Energy Efficiency — Low power consumption solenoids reduce overall system energy use.
Long Service Life — Designed for millions of cycles under proper maintenance.
Compact Structure — Easy to install and integrate into pneumatic manifolds or valve islands.
Versatile Control — Available in manual, electrical, or pneumatic pilot versions.
Applications of 4V Solenoid Valves
a. Industrial Automation Systems
Used in automated production lines, robotic arms, and packaging machines for controlling pneumatic cylinders and actuators.
b. Textile and Printing Machinery
Regulates air cylinders in looms, presses, and transfer systems, ensuring smooth mechanical movements.
c. Food and Beverage Equipment
Controls air-driven systems such as filling machines, conveyors, and sealing equipment, supporting hygienic and precise operations.
d. Automotive Manufacturing
Used in assembly lines, painting systems, and tire inflation setups for consistent performance.
e. Pneumatic Control Panels
Integrated into modular control systems for air distribution and directional control in factory automation.
Installation and Maintenance Tips
Always install the valve in a clean, dry environment to prevent dust and oil contamination.
Use a filter regulator lubricator (FRL) unit upstream to ensure air quality.
Ensure correct wiring according to voltage specifications to prevent coil damage.
Periodically inspect the spool and seals for wear to maintain airtight performance.
For manifolds, ensure even tightening to avoid air leaks at joints.
Why Choose a 4V Solenoid Valve?
The 4V solenoid valve is a perfect combination of precision control, high reliability, and compact design. It enables seamless control of pneumatic systems across various industries, enhancing automation efficiency and reducing maintenance costs.
By using a 4V solenoid valve, manufacturers gain a cost-effective, durable, and flexible solution for achieving efficient motion control in both small-scale machines and large industrial systems.
