MIL 7400 pneumatic positioners employ a force balance system to ensure that the position of the valve plug is directly proportional to the controller output signal pressure, regardless of gland friction, diaphragm actuator hysteresis or off-balance forces on the valve plug
| Structure | Control |
| Valve Motion | Linear Motion Valve |
| Model Name/Number | 7400 |
| Material | Die Cast Aluminium |
| Rated Load | 100 lb, 250 lb, 300 lb |
| Stroke Length | 1″, 2″, 6″ |
| Speed At Rated Load | 8.4 in/min, 8.9 in/min, 16 in/min |
| Duty Cycle | 17%, 18%, 50% |
| Retracted Length | 16-3/4″, 17″, 20″ |