A speaking valve is a one way valve that fits over the tracheostomy tube. The valve only opens to allow air to be breathed in via the tracheostomy. Speaking valves allow air to enter through the tube and exit through your mouth and nose. This will allow you to make noises and speak more easily.
If you are looking for speaking valves, this should be your one-stop destination because we have different varieties in them and from reliable manufacturers like Passy Muir Inc, Covidien and The Airway Company.