Venturi mask A type of disposable face mask used to deliver a controlled oxygen concentration to a patient. The flow of 100 per cent oxygen through the mask draws in a controlled amount of room air. We offer a range of Eco Venturi valves available individually or in kits which are designed to meet the requirements of BS EN 13544-3: 2001 and are colour coded for easy identification. Utilisation of the latest manufacturing technology has enabled us to combine two non-PVC materials in the same mask providing a mask design that offers improved patient comfort and which is more environmentally friendly. So the Eco range is comfortable for the environment and the patient too.