Pneumatic door openers convert energy (typically air) into mechanical motion and are used in a similar way to automatic door actuators. … The pneumatic system is built around a standard closer so the door will operate manually at all times, opening automatically on activation of a switch, access control system, etc.

How do pneumatic doors work?

In the simplest terms, pushing the liquid down in one area means another area will be pushed up. Pneumatic doors work very similarly to hydraulics, but instead draw in gas from the air and compressed it in a pressurised system to power mechanisms.

What does a pneumatic door closer do?

Pneumatic closers are generally lower in cost than the hydraulic models, with many models selling for under $2. They are most widely used to control screen and storm doors on the outside of the house, though heavier duty models are available for jalousie doors and for standard weight interior doors.