Waste draining pipe, offlet or drain pipe should be connected to the main pipe;each pipe should connect two valves with the most possible short valve-to-valve pipe length.
排污、放或疏应分别连接到各自的总上,每均应串接两阀门,两阀门间的段应尽量缩短。
Waste draining pipe, offlet or drain pipe should be connected to the main pipe;each pipe should connect two valves with the most possible short valve-to-valve pipe length.
排污、放或疏应分别连接到各自的总上,每均应串接两阀门,两阀门间的段应尽量缩短。
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