发明名称 |
Opening and closing valve including a packing gland and a yolk sleeve |
摘要 |
A valve stem is journaled in a journaling portion of a valve box in an upwardly and downwardly movable manner; a packing is interposed between the journaling portion and the valve stem; a packing gland is arranged above the packing; a yoke sleeve is provided above the packing gland; and a valve seat in the valve box is opened and closed with a valve element provided at the lower end of the valve stem by rotating a handle fitted into the yoke sleeve to move the valve stem upward and downward. A protective tube formed integrally with the packing gland is provided between the packing gland and the yoke sleeve around the valve stem. A guide projection with which the inner periphery of the upper end of the protective tube comes into contact is provided on the lower surface of the yoke sleeve.
|
申请公布号 |
US8500091(B2) |
申请公布日期 |
2013.08.06 |
申请号 |
US20100959818 |
申请日期 |
2010.12.03 |
申请人 |
OIKE TADASHI;TLV CO., LTD. |
发明人 |
OIKE TADASHI |
分类号 |
F16K41/02 |
主分类号 |
F16K41/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|