52,42,32-Way Pneumatic Valves

Pneumatic valves are key for controlling the flow of fluids like liquids, gases, and air in many industries. This blog explains three main types: 5/2, 4/2, and 3/2-way pneumatic valves. We’ll look at how they’re built, how they work, and where they’re used.


  • 5/2-Way Pneumatic Valve: This valve has five ports and two positions. When not in use, it’s in the “rest” state and blocks fluid. When activated, it changes to the “actuated” state, allowing fluid to flow a different way.
  • 4/2-Way Pneumatic Valve: With four ports and two positions, this valve also has a “rest” and “actuated” state. It offers two separate paths for fluid control.
  • 3/2-Way Pneumatic Valve: This valve has three ports and two positions. Like the others, it can block or allow fluid flow when it’s in the “rest” or “actuated” states.


All 5/2, 4/2, and 3/2-way valves operate using pneumatics and fluid rules. When you turn on a pneumatic actuator, it moves in a straight line or rotates, based on the valve design. This movement changes the valve’s internal paths, controlling the fluid flow.


  • 5/2-Way Pneumatic Valves: Used mainly where you need two separate flow paths. Good for controlling double-acting cylinders or for changing flow direction in pneumatic systems.
  • 4/2-Way Pneumatic Valves: Often used for single-acting cylinders or for rerouting flow in pneumatic circuits.
  • 3/2-Way Pneumatic Valves: Good for simple on/off control of pneumatic devices. Useful in pneumatic clamps, tool control, or as a starter for bigger valves.


5/2, 4/2, and 3/2-way pneumatic valves are core parts in fluid control systems. They offer different flow paths for a range of industrial needs. The valve you pick will depend on your specific task and control needs. By choosing the right valve type, you can control fluids effectively and reliably in your industry setup.