发明名称 |
BACKFLOW PREVENTION ASSEMBLY |
摘要 |
<p>A backflow prevention assembly designed for connection between a main supply line and a service pipe in water supply service, comprising two check valves in series and a relief valve for draining the chamber between the two check valves under certain operating conditions.</p> |
申请公布号 |
GB1577042(A) |
申请公布日期 |
1980.10.15 |
申请号 |
GB19770010320 |
申请日期 |
1977.03.11 |
申请人 |
ROCKWELL INTERNATIONAL CORP |
发明人 |
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分类号 |
E03C1/10;F16K1/20;F16K15/03;(IPC1-7):16K31/365;03B7/07 |
主分类号 |
E03C1/10 |
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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