The lower open discharge valve is designed to be flat, with a v-type, and provides lift and drop two working way discs. Valve body cavity with scouring and corrosion resistance of sealing ring, in open, can protect the body from the medium erosion, corrosion, and seals for special processing, the surface hardness HRC56-62, has the function of high wear resistance, corrosion resistance. The disc seal shall be covered with hard alloy on the cover according to the requirement, sealing the seal shall be sealed and the seal shall be reliable, and the sealing shall be prevented. Meanwhile, short stroke disc design is adopted. It is widely used in chemical, petroleum, metallurgy, pharmaceutical, pesticide, dyestuff, food processing and other industries. Various operating modes, such as manual, pneumatic (spring reset, double acting, handwheel and no handwheel), electric, hydraulic, gear, etc.

Exhibition under the feeding valve series are mainly used for reactor, discharging on the bottom of the tanks and other containers, with the aid of the bottom flange welding on the bottom of the tank and other therefore eliminate the phenomenon of residual process medium is usually the container export.