发明名称 |
AN ISOLATION VALVE ASSEMBLY |
摘要 |
<p>An isolation valve assembly for use in a pipeline comprises a valve housing (1) body having inlet (12) and outlet (13) openings. In the housing there is disposed a pair of independently operable rotary valve balls (3) each having a port (25) therethrough The valve balls (3) are each rotatable between an open position in which the respective port is in communication with the adjacent opening and a closed position in which the valve ball closes the adjacent opening. A valve seat (9, 14) supports each valve ball in the housing and a valve seat retention member (10) is disposed in each of the openings (5). The retention member (10) defines a flow passage (11) therethrough for communication with the adjacent valve ball port and has a first end proximal to one of the valve balls. The first end supports said valve seat and a second end has means for engagement to the pipeline. The arrangement allow a relatively large bore valve assembly to have a length conforming to International Standard ANSI B16.10 or equivalent so as to enable a single ball valve assembly to be replaced with a double valve assembly without any modification to the pipework.</p> |
申请公布号 |
EP1322886(A1) |
申请公布日期 |
2003.07.02 |
申请号 |
EP20010938405 |
申请日期 |
2001.06.13 |
申请人 |
OLIVER TWINSAFE VALVES LIMITED |
发明人 |
SHILLITO, PAUL;OLIVER, MARK |
分类号 |
F16K5/06;F16K27/00;F16L55/07;(IPC1-7):F16L55/07;F16K35/14 |
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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