求救：手动球阀，, 流量调节阀 阀挡 valve stop 整定压力 set pressure 截止阀 globe valve 主阀 main valve 填料式旋塞阀 gland packing plug valve 通气阀 bre。
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阀挡 中文名称： 阀挡 英文名称： Valve Grid 友情链接 中国演示用具网 中国门禁机网 中国石材翻新机网 中国魔术贴网 中国书写板网 中国暖手宝网 宁德商业网 中国瓶体网 中国排气
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... 为止阀;关断阀 shut-off valve 阀挡 valve positioner 直接效用式降低压力阀 direct-acting reducing valve ...
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阀门的启闭位置由行程开关控制，且阀板上设有限位挡块以保证阀板的启闭位置。
There is limit block on the valve disc to ensure the open-close position , which is controlled by the stroke switch.
系统中设有流量调节环节，电液比例调速阀在快挡可以缩短整个调平时间，在慢挡可以保证调平精度。
Equipped with flow regulator in system, electro-hydraulic proportional speed regulating valve can decrease leveling time in high speed gear, and ensure leveling accuracy in low speed gear.
它由电磁线圈、阀芯、复位弹簧和外壳组成，阀芯由挡铁，动杆和密封垫构成。
The valve consists of an electromagnetic loop, a valve core, a replacement spring and a shell and the valve core consists of a retaining iron, a movable bar and a sealing pad.
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