Apparatus for the controlled ventilation of rooms
Apparatus for varying the flow area of a conduit
Apparatus for, and method of, controlling the flow of fluid
Apparatus with a check function for controlling a flow...
Arcuate swing check valve
Arcuate swing check valve
Arrangement in or relating to a valve
Articulated oral inflation valve
Aseptic constant-flow valve
Aspiration assembly having dual co-axial check valves
Assembling a siphonable filler tube with a check valve on a...
Assembly having a spring-loaded tandem control valve
Asymmetrical check valve
Asymmetrically loaded check valve
Atomizer for lubricants, etc.
Atomizing nozzle with laterally movable seat
Attenuator valve for a pressure-gas conduit
Austenitic stainless steel valve
Auto flow regulator
Automatic air valve device for ducts