Combined vacuum breaker and check valve
作者： William C Groeniger
DOI:
关键词: Connection (mathematics) 、 Check valve 、 Circuit breaker 、 Supply & distribution 、 Mechanical engineering 、 Potable water 、 Electrical engineering 、 Engineering
摘要: The present invention relates to improvements In combined vacuum breakers and check valves. particular, the an improved breaker valve for plumbing systems wherein a connection is made between potable water supply distribution system of building...
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