发明名称 |
DREIESPJELDVENTIL. |
摘要 |
An installation control valve, for example for use in a fire fighting sprinkler installation, comprises a pivotal butterfly valve disc co-operable with a movable stop, which in one position abuts the valve disc to retain the valve closed against pressure forces acting thereon. A retaining mechanism is releasably held to resist stop movement and so prevent valve disc opening but is operable under a predetermined condition to permit stop movement from said one position to a second position. When the stop is in the second position, unequal pressure forces on either side of the valve disc cause same to move thereby opening the valve.
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申请公布号 |
NO149078(C) |
申请公布日期 |
1984.02.08 |
申请号 |
NO19780002334 |
申请日期 |
1978.07.04 |
申请人 |
MATHER & PLATT LTD, |
发明人 |
BRAY, GEDDES ALAN,;HOLKER, RICHARD JOHN, |
分类号 |
F16K31/126;A62C37/46;F16K1/22;F16K17/32;F16K31/44;(IPC1-7):F16K1/20;A62C37/06 |
主分类号 |
F16K31/126 |
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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