译文：
平板闸阀的使用维护说明 一、用途、性能及特点 平板闸阀是闸阀大家族中的一员，同楔式闸阀一样；它的主要功能是控制管路的通断，而不是调节管路中的介质流量。其优点是流体阻力小，启闭省力，结构长度较短，对管路介质流向不受限制等。缺点是密封副有两个密封面，加工较复杂，成本高，相对其他阀门要高大些，启闭时间较长，启闭时密封面间相对摩擦，容易引起擦伤 二、产品结构特点 阀座采用形密封圈密封和施加预紧力的浮动阀座结构，使阀门进出口双向密封；并且该结构的启闭力矩仅为普通阀门的，能达到轻松开、关阀门。 2阀座采用密封面上镶嵌或堆焊不锈钢（或钴铬钨合金），具有对金属和金属对金属的双重密封，密封面同时xx闸板脏物的作用。 3、金属对金属密封的阀门，阀体外部设有注油脂结构，油脂通过注脂器、阀座进入阀门密封面，使阀门达到零泄漏。 4、带导流孔阀门的闸板，无论是全开或是全关始终与密封面吻合，密封面得到保护不受介质直接冲刷，从而延长使用寿命。 5、阀门在全开时，通道平滑为直线，流阻系数极小，无压力损失，可通毛球清扫管线。 6、本阀门采用带自密封能力的填料结构，无需经常调节，开、关极为轻便，且密封性可靠，填料函处设有辅助密封油脂注入结构，密封性能{jd1}可靠，真正达到零泄漏；解决了通用阀门填料处最容易外漏的弊病。 7、阀门关闭时能自动卸掉内腔高压（详见工作原理图），保证使用安全。 8、全封闭结构，防护性能好，可适应全天候要求。 9、阀门设有指示杆或观察窗以表示阀门的启闭情况。

“ The use of flat gate valve maintenance instructions”是由提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：、、、、等。

原文：
The use of flat gate valve maintenance instructions 1, uses, performance and features Flat gate valve is a member of a large family, with the same wedge gate valves; its main function is to control the pipeline off, rather than adjust the line of medium flow. The advantage is fluid resistance small, open and close easier, shorter length, structure, flow restrictions and other media on the pipeline. Drawback is that there are two sealing surfaces seal pair, processing more complex, high cost, relatively tall more other valves to open and close a long time, open and close when the relative friction between the sealing surface, prone to scratches Second, characteristics of the product structure Seat with ring seal and preload floating seat structure, so that import and export of two-way valve seals; and that the structure is only normal valve opening and closing torque can be reached easily open and close the valve. 2 seat sealed surface mounted or welding stainless steel (tungsten or cobalt chromium alloy), with metal and metal to metal double seal, the sealing surface dirt while the role of gate clearance. 3 valves of metal to metal seal, body structure and equipped with injection oil, grease through the grease device, the valve seat into the valve sealing surface of the valve to achieve zero leakage. 4, the gate valve with diversion hole, either fully open or fully closed always coincide with the sealing surface, sealing surface to be protected from direct scouring medium, thus prolonging the service life. 5, the valve in fully open, the channel smooth straight line, flow resistance coefficient is extremely small, no pressure loss, can pass the ball clean wool pipeline. 6, the valve with self sealing ability by filling the structure, without frequent adjustment, opening and closing very lightweight, and reliable seal, stuffing seal oil into the place of universal structure, absolutely reliable sealing performance, thereby achieving zero leakage; solve a common valve packing leakage of the ills of the most vulnerable. 7, the valve closes automatically removal of the cavity pressure (see principle diagram), to ensure safety. 8, fully enclosed, protective properties, and can adapt to all-weather requirements. 9, the valve rod or viewing window with instructions to open and close the valve that situation.