Festo 3/2 Closed, Monostable Pneumatic Solenoid/Pilot-Operated Control Valve Electrical MDH Series

The Festo MDH-3/2-24DC is a 3/2-way, normally closed pneumatic solenoid valve used to control compressed air in simple automation circuits. It is monostable, meaning it switches position when powered and returns to its default state when power is removed. This makes it suitable for applications where airflow must stop automatically in the event of power loss. The valve is electrically actuated by a 24 V DC solenoid and internally pilot-operated, allowing reliable switching even at higher operating pressures.

Core Capabilities of the Festo MDH Series Pneumatic Pilot-Operated Control Valve

In its resting state, the valve blocks the air supply. When the solenoid is energised, the valve switches and allows air to flow to the actuator. Once power is removed, the valve returns to its closed position by spring force.

• 3/2-way function, normally closed.
• Monostable operation with spring return.
• Electrical actuation with pneumatic pilot control.

Designed for Reliable Industrial Use

The MDH series is built for consistent performance in industrial pneumatic systems. The compact body allows easy integration into control panels or valve manifolds, while the internal pilot design helps maintain stable switching even under fluctuating air pressure. This valve is typically used with cylinders, air logic circuits, and basic automation setups where repeatable on-off air control is required.

Typical Applications of the Valve

It fits well in systems where reliability and predictable valve behaviour matter more than complex control logic.

• Pneumatic cylinder actuation
• Automation panels and control cabinets
• Packaging and assembly equipment
• Simple machine sequencing
• Air control in industrial tooling

For more information please check the datasheets.