进口气动真空球阀
德国进口气动真空球阀与进口气动真空蝶阀的区别：
进口气动真空球阀是适用于真空系统中接通或切断管路的介质流。进口气动高真空球阀以4-7公斤的压缩空气为动力，通过控制气动元件如电磁换向阀来改变气路方向，执行气缸推动使球阀做启闭运动。阀门为直通式，靠球面密封，因而既能用在真空状态下，也能在低压状态下使用。并可以任意位置安装。进口气动高真空球阀适用的工作介质为带酸、碱性的气体或液体。适用的介质温度：标准密封件-25～ 120度 耐高温密封件-25～ 230度
The difference between imported pneumatic vacuum ball valve and imported pneumatic vacuum butterfly valve:
Imported pneumatic vacuum ball valve is suitable for vacuum system to connect or cut off the pipeline flow. Imported pneumatic high vacuum ball valve with 4-7 kg of compressed air as the driving force, through the control of pneumatic components, such as solenoid directional valve to change the direction of the gas, the implementation of the cylinder to push the ball to do the opening and closing movement. The valve is a straight through type, which is sealed by a spherical surface, so that the utility model can be used in a vacuum state and can also be used in a low voltage state. And can be installed in any position. Imported pneumatic high vacuum ball valve for the working medium with acid, alkaline gas or liquid. Applicable medium temperature: -25 ~ 120 degrees of high temperature seal -25 ~ 230 degrees
进口气动真空球阀连接方式概述：
法兰连接这是阀门中用得zui多的连接形式。按结合面形状又可分为以下几种：光滑式：用于压力不高的真空球阀。加工比较方便凹凸式：工作压力较高,可使用中硬垫圈榫槽式：可用塑性变形较大的垫圈,在腐蚀性介质中使用较广泛,密封效果较好。梯形槽式：用椭圆形金属环作垫圈，使用于工作压力≥64公斤/平方厘米的高真空球阀,或高温高真空球阀。透镜式：垫圈是透镜形状,用金属制作。用于工作压力≥100公斤/平方厘米的高压高真空球阀，或高温高真空球阀。O形圈式：这是一种较新的法兰连接形式，它是随着各种橡胶O形圈的出现，而发展起来的，它在密封效果上比一般平垫圈可靠。
螺纹连接这是一种简便的连接方法,常用于小阀门。又分两种情况：直接密封：内外螺纹直接起密封作用。为了确保连接处不漏,往往用铅油、线麻和聚四氟乙烯生料带填充；其中聚四氟乙烯生料带,使用日见广泛；这种材料耐腐蚀性能很好,密封效果,使用和保存方便,拆卸时,可以完整地将其取下,因为它是一层无粘性的薄膜,比铅油、线麻*得多。间接密封：螺纹旋紧的力量,传递给两平面间的垫圈,让垫圈起密封作用。
Introduction of the connection way of imported pneumatic vacuum ball valve:
Flange connection this is the most used in the valve connection form. According to the shape of the surface can be divided into the following categories: smooth: for high pressure vacuum ball valve. The processing is more convenient bump type: a higher pressure can be used in hard gasket groove type: plastic deformation larger washers can be used, is widely used in the corrosive medium, the sealing effect is good. Trapezoidal trough: Oval metallic ring gaskets, high vacuum valve used in working pressure greater than 64 kg / cm2, or high temperature and high vacuum valve. Lens type: gasket is a lens shape, with metal production. For working pressure greater than 100 kg / cm2 high-pressure high vacuum valve, high temperature or high vacuum valve. O ring type: This is a new form of flange connection, it is with the emergence of a variety of rubber O ring, and developed, it is more reliable than the general flat gasket sealing effect.
Threaded connection is a simple connection method, commonly used in small valves. There are two cases: direct seal: internal and external threads directly from the sealing effect. In order to ensure that connections do not leak, often lead oil, hemp and PTFE filled with raw materials; including Teflon tape, become more widely used; good corrosion resistance of this material, the sealing effect is excellent, easy to use and preservation, demolition, you can be compley removed, because it is a layer of film inviscid, than lead oil, hemp is much better. Indirect sealing: threads power transmission between the two flat washers, washers for sealing function.
