1.Large flow air compressor auto drain valve: zero air loss, prevent clogging, small size, large flow, low installation height, saving space. Air tank drain valve that can automatically discharge sewage. 2.Efficient drainage: Liquid level induction drainage, through the internal liquid level ball, when the water level reaches a certain height, the valve will automatically open to drain. When the water level is lower than a certain position, the valve will automatically close, achieving only drainage without exhaust. 3.With pre-filter: Built-in filter with manual drain port to facilitate the discharge of foreign matter and avoid clogging. At the same time, the automatic drain valve also has a manual button for draining, which is convenient for cleaning inside the drain valve. 4.Detailed parameters: water inlet G1/4, drainage outlet G3/8. The operating pressure is within 0.1-2.5Mpa. Suitable for gas tanks above 1 cubic meter. Allows impurities (such as rust, sand, oil) to filter.