1. Air and Water Flow Control: The endoscope has a working channel through which auxiliary instruments, such as forceps or polypectomy snares, can be inserted or used to insufflate air or water into the gastrointestinal tract. The valves control the flow of air and water, allowing the endoscopist to inflate or deflate the organ under examination, as well as control irrigation during the procedure. 2. Aspiration of fluids and debris: The endoscope valves also allow the endoscopist to aspirate fluids, secretions, or debris that may be present in the GI tract. This is particularly useful when cleaning and washing the organ under examination, ensuring clear visualization during the procedure. Return Policy90 days warranty Return in case of manufacturing defects Return for incopatibility assumed by the buyer