Damper apparatus

Damper assembly

Damper assembly for closing a duct for hot gases

Damper blade control

Damper construction

Damper vane

Dampers with leaf spring seals

Device for controlling a steam or gas turbine

Device for dispersing exhaust gases

Device for regulating the flow of gases having substantially dif

Device for selectively regulating the flow rate of a fluid

Device for selectively regulating the flow rate of a fluid

Digital flow control system

Digital fluid flow control apparatus

Digital fluid flow control system

Digital fluid flow control system with trim adjustment

Digital gas metering system using tri-stable and bi-stable solen

Digital valve

Digital valve assembly

Discharge conduits of steam generators and the like