Rossmax Piston Nebulizer NA100 is a medical device designed to deliver medicine prescribed by a physician to the airways of the lungs. The proprietary adjustable valve is able to deliver medications of different viscosity level according to every user's conditions without exchanging parts. The Valve Adjustable Technology (VAT) bottle allows users to adjust different levels of Nebulization rate 0.15 (closed)/0.4 (fully opened) ml/min at consistent particle size. Higher nebulization rate (fully opened) is for higher viscosity medications and higher breathing capacity user while lower nebulization rate with closed valve will be more appropriate for kids/infants with lower breathing capacity. VAT is recommended for respiratory disorders such as Chronic Obstructive Pulmonary Disease (COPD) and asthma as well as intensive use in general. Rossmax Piston Nebulizer NA100 ensures your treatments are delivered quickly, safely and conveniently making this unit ideal for all ages in health care structures like hospitals and home care. Your compressor nebulizer should be used under the supervision of a licensed physician and/or a respiratory therapist. Together with your physician and/or respiratory therapist, you can feel comfortable and confident knowing that you are obtaining the most effective inhalation treatments for your respiratory condition.