The present invention relates to a tracheostomy valve (100) configured to be in fluid communication with a patient's trachea. The valve comprising a hollow valve body (1), a flexible membrane (7) adapted to work as a check valve opening the valve when the patient inhales and sealingly closing the valve when the patient exhales, and a cap (4) with at least one through hole (4c) making the cap fenestrated. The hollow valve body having a through hole forming a passageway (20) for fluid extending between an inner end (1a) being an outlet of the hollow valve body and an outer end (1b) being an inlet of the hollow valve body. The fenestrated cap (4) being configured to be detachably attached to the outer valve body end (lb), and the inner valve body end (1a) is configured to be in fluid communication with the patient's trachea.
