| 摘要 |
<p>One point valve of a buried type for a pipe junction comprises: a band-shaped flange comprising a through hole for inserting a main pipe in the inside, and a top flange in which a gate hole for entry and exit of a gate of an open cross apparatus is mounted vertically; and an opening and closing means comprising a middle case for opening or closing the gate hole through entry and exit to the inside of the top flange, a middle handle for manipulating the middle case, and an adapter for supporting the middle handle.</p> |
