Suction piping for all pumps shall have at least five ( 5 ) times the nominal pump suction flange diameter of straight pipe upstream of the suction nozzle 所有水泵的吸水管道直径至少应有5倍于吸入口的上升直水管段的额定边缘直径。
2.
Suction piping for all pumps shall have at least five ( 5 ) times the nominal pump suction flange diameter of straight pipe upstream of the suction nozzle 所有泵的吸入管线应在吸嘴端上游具有至少( 5 )倍公称泵吸入直管法兰直径的长度。