The whole valve body is epoxy resin lacquer baked, which fully isolate valve shell from media, thus effectively prevent valve gate from being eroded by media.

According to the structural feature of parallel single disk gate valve, the strength and rigidity of body will be calculated with finite element method, and with cylindroid shell theory.

He suddenly got an idea. He indented all his body into the shell, covered the gate with leaf, and soon rolled down the dune.