3-Way Solenoid Air Spool Valves

Three-Way Pneumatic Switching for Supply and Exhaust Control

3-way solenoid spool valves provide three-port directional control for pneumatic circuits that need a controlled supply, outlet and exhaust path. They are commonly used with single-acting cylinders, pilot circuits and other machine functions that require pressurization and exhaust from one work port.

The source category lists port sizes from 10-32 UNF through 1/2 NPT, allowing the same general valve function to be applied across compact and larger pneumatic installations.

3-Way Valve Features

• Three-port directional spool-valve function
• Port sizes from 10-32 UNF to 1/2 NPT
• Electrical solenoid actuation
• Suitable for compact and general industrial pneumatic circuits
• Compatible with machine-control and automation systems

Why Use a 3-Way Solenoid Valve?

• A 3-way valve can alternately connect a work port to pressure or exhaust, which is useful for single-acting actuators and many pneumatic control signals.
• Correct valve sizing helps maintain actuator speed and keeps pressure drop within an acceptable range.

Common Applications

• Single-acting pneumatic cylinders
• Pneumatic pilot circuits
• Packaging machinery
• Automated assembly
• Machine tools
• OEM pneumatic equipment