Damper construction
Damper mounting assembly
Damper system with edge sealed damper blade and method of assemb
Damper system with internal sealing channels and method of assem
Damper valve having an adjustable seat
Damper valve having an adjustable seat
Device for controlling flowing media
Device for mounting of a shutter in a piping of a heating or air
Disc valve
Disc valve with protected open disc
Dislodging a throttle plate from ice formation
Disposal closure valve
Door attachment structure
Drive device
Dual seal butterfly valve