Description

The Normally Closed (NC) 3/2-way solenoid valve is one of the most widely used valves in industrial automation and control systems. It provides precise and reliable control of air, gases, and various fluids. The valve features three ports and two operating positions (3/2-way). It remains closed when de-energized and automatically opens the flow path when the solenoid coil is energized.

With its fast response time, high reliability, and low power consumption, this type of solenoid valve is an ideal solution for pneumatic systems, packaging machinery, production lines, and industrial automation applications.

—

Operating Principle

The valve operates using an electromagnetic mechanism:

· Normal state (de-energized): The valve remains closed, blocking fluid flow.
· Operating state: The solenoid energizes the magnetic core, opening the flow path and directing air or fluid according to the valve design.
· De-energizing: The internal spring automatically returns the valve to its original closed position.

—

Features

· 3/2-way design for precise control of air and fluids
· Normally closed (NC) configuration for enhanced operational safety during power failure
· Fast response time
· Low power consumption
· Compact design for easy installation in tight spaces
· Long service life thanks to high-quality construction materials
· Easy maintenance and replacement
· Compatible with a wide range of industrial control systems

—

Applications

The Normally Closed 3/2-way solenoid valve is used in:

· Pneumatic systems
· Industrial automation and production lines
· Packaging and manufacturing machinery
· Food and pharmaceutical industries
· Inert gas control systems
· Material handling equipment and robotics
· Low-viscosity fluid control applications

—

Materials

Material selection depends on the application and operating conditions, typically including:

· Valve body made of brass or stainless steel
· Stainless steel magnetic core
· Stainless steel spring
· Sealing materials such as NBR, EPDM, or FKM (Viton), depending on the fluid type and temperature requirements

—

Why Choose the Normally Closed 3/2-way Solenoid Valve?

A high-quality Normally Closed 3/2-way solenoid valve improves system efficiency, reduces downtime, and extends equipment service life. Its reliable design and fast response ensure stable performance across a wide range of industrial applications, while minimizing maintenance requirements and enhancing operational safety.