发明名称 |
BRANDSCHUTZ-ABSPERRORGAN |
摘要 |
<p>A Fire Safe Seal for a valve having a metallic seat ring slidable in a cylindrical internal surface with an elastomer ring sealing between the seat ring and the internal surface. An elastomer seal ring or even a highly finished surface on the leading face effects a seal with the valve closure member. An emergency seal ring having a forwardly extending, sharp annular lip with an internal chamfer is engageable, when forced, over a complementary chamfer around the trailing end of the seat ring and into the clearance around the seat ring to seal it off. A spacer ring of a heat destructible material is interposed between the emergency seal ring and the seat ring to render the emergency ring inactive normally.</p> |
申请公布号 |
DE3003203(A1) |
申请公布日期 |
1980.12.11 |
申请号 |
DE19803003203 |
申请日期 |
1980.01.30 |
申请人 |
GROVE VALVE AND REGULATOR CO. |
发明人 |
GAZZANIGA,ITALO;PASQUINELLI,OTTORINO |
分类号 |
F16K5/06;(IPC1-7):F16K5/20 |
主分类号 |
F16K5/06 |
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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