Also known as breathing circuit. The purpose of ventilator circuit is to deliver anesthetic gases and oxygen. The circuit provides a way to deliver gases without significant increase in airway resistance. It is simple and safe to use, delivers the right gas mixture, allows all methods of ventilation in all age groups, efficient, sturdy, small and light. It also allows easy removal of waste gases and is easy to maintain with low running costs. Provided with fixed elbow or inspiratory/ expiratory tubing.