Medical check valve with valve -cover seal structure

The utility model relates to a medical check valve with valve -cover seal structure. It is hollow structure including valve body, enclosing cover, spring, case, valve body, is divided into upper plenum and cavity and middle part intercommunication chamber down in the valve body, and the enclosing cover be hollow structure, and the lower part of enclosing cover is inserted to establish and is sealed up in the upper shed of valve body, and member portion and member portion and middle sealing are down presented to the case, and just the both ends of spring are respectively to establishing between valve gap and middle sealing in the last member portion of case for the spring housing, and interior stopper has been cup jointed in the lower member portion of case, the enclosing cover with the equal injection moulding of valve body, assembly back, the lower part of enclosing cover are inserted the face of establishing and are inserted back in the interior insertion surface that the valve body upper shed corresponds,