Anaesthetic gas scavenger 300 A is an Active anaesthetic gas scavenging device with Venturi system and connection for central system. Gas feeding is done through compressed medical air or oxygen. The medical gas pressure should be included between 280 kPa and 600 kPa (2,8 – 6 bar). It comes with 2 separate inlets for automatic and manual circuit scavenging piped into a 3 liters bag. The gas scavenging system operates automatically as soon as the anaesthetic gas enter into the reservoir bag, excluding in this way the creation of an eventual positive pressure on expiratory line. The system is equipped with a valve for the eventual creation of an excessive positive pressure within the bag and with a valve for the eventual creation of a negative pressure within the bag.