泵壳中央有一液体吸入4与吸入管5连接。
Shell pumps a liquid central inhalation 4 and 5 of inhalation connection.
泵壳中央有一液体吸入4与吸入管5连接。
Shell has one central pump liquid inhalation inhalation tube 4 and 5 connected.
为了防止泵的损坏，必须在泵的排出管到吸入管之间安装安全阀。
In order to prevent damage to the pump must pump discharge pipe into the suction pipe installed between the safety valve.
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