Valve device of a storage tank for transporting oils or chemical compounds

摘要

A valve device for a storage tank for transporting oils or chemical compounds, includes an upper body having a V-shaped valve seat at an upper end thereof. At least one screw hole with a closing cock is provided in the upper body. A lower body connected to the upper body, has an enforcing frame forming a plurality of pathways between connection spokes. A stem having a three-stepped rod extends over the valve seat. A disc is coupled to a flange by a ring by bolts. The flange is supported by a plurality of spokes to a bush fixed to the rod. Hammering prevention discs are fixed to a middle portion of the rod as is a weight connected below the discs. Bushings are between the discs and all are hold to the rod by a lock nut. A cap having a main hole receives the bottom end of the stem rod and two more holes in the cap communicate with the hole to allow the bottom end of the rod to move in the cap.