Blom-Singer® Adjustable Tracheostoma Valve II (ATSV II)-The Adjustable Tracheostoma Valve II (ATSV II) consists of two pieces: a Diaphragm/Faceplate and Body. The assembled two-piece valve inserts into the tracheostoma adhesive housing that is applied to the skin surrounding the stoma. A replacement Diaphragm /Faceplate is available separately.