允许吸上真空高度Hs是指泵入口处压力p 1可允许达到的最大真空度。
Allows a high degree of vacuum suction on the Hs is p1 pressure pump at the entrance to allow the greatest vacuum.
泵的安装高度,长度应保证泵工作时不超过允许的吸上真空高度。
Pump installation height, length should guarantee the pump working shall not exceed the permitted on vacuum suction height.
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