Made of stainless steel. It is used for the gastrointestinal contents to fall into the air delivery tank through the sliding right, the pneumatic valve is closed, and the compressed air is filled, and the gastrointestinal contents are transported to the collection container by the pressure of the gas, and the air supply cylinder is cleaned after each delivery. And open the valve again. Including: stainless steel sputum contents sliding. Stainless steel air supply cylinder and pneumatic valve. Stainless steel cyclone separator. Approximately 20 meters of stainless steel pipe with curved, connecting flange and connecting piece stainless steel collecting tank, where the exposed part is made of stainless steel. Required valves, controls, mounting brackets and fixtures. Stainless steel is food grade 304. The remaining steel parts are hot-dip galvanized.