Passy-Muir's PMV 2020 (Clear) (15 mm inside diameter/23 mm outside diameter) is the only lightweight, one-way, closed-position, "no leak" tracheostomy speaking valve that attaches to the Pilling Weck metal Jackson Improved tracheostomy tubes (sizes 4-6 or equivalent) with use of the PMA 2020-S Adapter. It can be used on the adult, pediatric, and neonatal Bivona nonfoam filled cuffed tracheostomy tubes currently on the market. The PMV 2020 (Clear) is intended for use by both short-term and long-term adult, pediatric, and neonatal nonventilator-dependent tracheostomized patients. Product Number: PMV2020