How to Select the Correct Solenoid Valve Port Size?

    Choose valve type based on actuator and application: use 4/2 or 5/2 valves for double-acting cylinders, 3/2 valves for single-acting cylinders, and 2/2 or 3/2 valves for general fluid switching.

    Pneumatics uses compressed air to transmit energy and signals. Air compressors store energy to drive actuators (e.g., cylinders). While cylinders can reach speeds up to 1 m/s, the optimal operating range is 50–500 mm/s—maximizing economy and minimizing wear and energy use.

    Recommended solenoid valve port sizes vs. cylinder bore:
    • φ32–50 mm → 6 mm port
    • φ40–80 mm → 8 mm port
    • φ63–125 mm → 10 mm port
    • φ100–200 mm → 15 mm port
    • φ160–250 mm → 20 mm port
    • φ250–400 mm → 25 mm port