Valve for the venting circuit of a liquid tank

Ventilation loop the valve is a liquid box, the valve comprises: a) main cavity (3), to the box body, and a manner of hole (14) connected with the inlet loop (2); b) and floater, comprising a main body (4) and capable of the closed outlet (14) head (5), and floater is filled in the main cavity (3) is vertically sliding; And c) and a baffle plate (12), namely hole (14), and a manner is arranged in the main cavity (3) is arranged downwards are chamber (3 '); the secondary chamber (3 '), float's main body (4) and a head (5) and size is designed on the floater and a head (5) is arranged at least partially of the downwards chamber (3 ') to form, further float's main body (4) is moving the plane.