力士乐柱塞泵过滤装置是由多层重叠过滤网板和过滤框组成，网板孔由电脑打孔，孔密小均匀，这可保证每层过滤网板上的滤材压力均匀，使过滤精度优，原液体经过加压进入筒体内，从过滤框四周孔进入，再经网板上的过滤介质从网板中心多个小孔出来，合格液体排出。本机滤材可选用（聚丙烯滤膜、增强型滤膜、滤纸、滤布，专用脱碳过滤膜）等，可根据用户要求选用合适的滤材。本机的特点：流量大、速度快、存活性碳多、占用空间小，过滤面积大、效率高、过滤精度高，操作方便等。合成氨装置。因为合成氨原和净化方法不同，其工艺流程不同，所需阀门的技术机能也不同。目前，海内合成氨装置主要需用闸阀、截止阀、止回阀、疏水阀、蝶阀、球阀、隔膜阀、调节阀、针型阀、安全阀、高温低温阀。其中，截止阀占装置用阀总数据的53.4%,闸阀占25.1%,疏水阀占7.7%,安全阀占2.4%,调节阀和离低温阀及其它占11.4%.乙烯装置,乙烯装置是石油化工的龙头装置,其需用阀门种类繁多。闸阀、截止阀、止回阀、升降杆式球阀占大多数，其中闸阀需居首。
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