Main components: pump cylinder, piston, piston rod and the inhalation valve, discharge valve.
主要部件: 泵缸 、 活塞, 活塞杆及吸人阀 、 排出阀.
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Inhalation client - side hydraulic connector O - ring may be missing or loose connections inhalation valve.
液力端吸入侧连接件可能缺少O型圈或吸入阀连接松动.
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