| 发明名称 |
LETDOWN VALVES |
| 摘要 |
<p>A letdown valve for slurries under pressure is provided with a throttle 13 inside a housing 15 with interposed lubricant sealer and grooves 16 to accommodate any excess lubricant sealer. The throttle body 13 is held in place by a retaining ring 17 which is welded in position.</p> |
| 申请公布号 |
EP0085251(B1) |
申请公布日期 |
1986.05.28 |
| 申请号 |
EP19820306869 |
申请日期 |
1982.12.22 |
| 申请人 |
VAAL REEFS EXPLORATION AND MINING COMPANY LIMITED |
发明人 |
BURCKARD, BARNEY VAN DYK;PIETERSE, HERMANUS JOHANNES HENDRICUS |
| 分类号 |
F16K25/04;F16K27/00;F16K47/16;(IPC1-7):F16K25/04 |
主分类号 |
F16K25/04 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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