| 摘要 |
<p>A mud valve according to an embodiment of the present invention includes; a housing including a first opening and a second opening drawing a fluid in and out; a rod penetrating the first and second openings; and multiple discs which are spaced apart from each other when opened, come in contact with each other when closed, and move along the rod in a sliding motion. At least one of the discs includes an opening which lets the fluid pass through when opened and seals the inside of the housing when closed. The opening can be formed to be covered by another disc in contact.</p> |
