What about issues of having the Breather stick?/Whistle sounds/defective device?

Most issues of “sticky” diaphragms on the Breather or whistle sounds derive from inadequate or insufficient cleaning of the device.

Please visit our website for the manufacturer’s recommended cleaning: https://www.pnmedical.com/lessons/breather-how-to-clean/.

Should the problem persist, please contact our customer service center.