Fecha de publicación: 03/11/2020 Fuente: Wipo Olive Table The utility model discloses a combination valve in the field of automobile oil tanks, which comprises a valve body installed in an oil tank, a first exhaust hole and a second exhaust hole which are communicated with the inside and the outside of the oil tank are formed in the top of the valve body, and a first valve piece used for achieving opening and closing of the first exhaust hole and a second valve piece used for achieving opening and closing of the second exhaust hole are arranged in the valve body. The first valve element is elastically arranged in the valve body through the first spring and opens and closes the first exhaust hole through lifting, a concave table is machined on the side portion of the first valve element, the second valve element is elastically arranged on the concave table through the second spring and opens and closes the second exhaust hole through lifting, and the second exhaust hole is opened and closed along with rising of the liquid level in the oil tank. According to the valve, the function of the first valve body and the function of the second valve body can be achieved through the single valve body, the size is smaller, and the installation spaceis saved.