发明名称 |
MODULAR SADDLE FLAPPER VALVE |
摘要 |
A flapper valve assembly is provided, of the type preventing downward fluid flow when the flapper is closed, which is sized, shaped and configured to provide a smaller maximum outer diameter to minimum internal diameter ratio, thus allowing a larger minimum ID for a given maximum outside diameter, when compared to currently available flapper valve assemblies. An insert assembly is used in the modular saddle flapper valve assembly which has a flapper seat, flapper valve and sleeve. The insert assembly is secured within a tubular housing and enclosed by standard top and bottom subs, either sub being easily removed and replaced with a sub having a different thread size or type, the removal being easily accomplished without disassembly of the insert assembly. |
申请公布号 |
WO2009012365(A1) |
申请公布日期 |
2009.01.22 |
申请号 |
WO2008US70291 |
申请日期 |
2008.07.17 |
申请人 |
HERNANDEZ, ALFRED, LARA;KLATT, DUDLEY, ILES |
发明人 |
HERNANDEZ, ALFRED, LARA;KLATT, DUDLEY, ILES |
分类号 |
E21B33/12 |
主分类号 |
E21B33/12 |
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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