进口波纹管闸阀 德国洛克LOCKE波纹管闸阀

一、进口波纹管闸阀产品介绍：

德国《LOCKE》洛克--进口波纹管闸阀采用波纹管密封的设计。密封填料为波纹管和其它填料双重密封，其关键部件金属波纹管，下端与阀杆组件采用自动滚焊焊接，上端与连接板自动滚焊焊接，在流体介质和大气之间形成一个金属屏障，确保阀杆零泄漏。

二、进口波纹管闸阀技术参数：

公称通径：DN15-DN350

公称压力：1.6Mpa-6.4Mpa

适用温度：-30℃~425℃

适用介质：水、油、蒸汽

阀体材质：铸钢、碳钢、不锈钢

连接方式：法兰连接

三、进口波纹管闸阀工作原理：

进口波纹管闸阀是一个启闭件闸板，在管道上主要起切断介质作用，可用于不同介质全开或全闭使用，但不可做为节流用。优点为流体阻力小，启、闭所需要的力矩也较小;介质的流向不受限制，可以使用在介质向两个方向流动的环网管路上。结构长度比较小，利于管道安装。特别是本阀门设计为石墨和波纹管双重密封，使得密封性能更加优越于普通闸阀，大大增加了阀门的使用寿命。

四、进口波纹管闸阀性能特点：

1、流体阻力大，开启和关闭时所需力较大;

2、不适用于带颗粒、粘度较大、易结焦的介质;

3、调节性能较差。波纹管闸阀的种类按阀杆螺纹的位置分有外螺纹式、内螺纹式。按介质的流向分，有直通式、直流式和角式。截止阀按密封形式分，有填料密封截止阀和波纹管密封截止阀。

1、 Introduction to imported bellows gate valve

German "Locke" - the design of imported bellows gate valve adopts bellows seal. The sealing packing is double seal of bellows and other packings. The metal bellows, the key component of the sealing packing, adopts automatic roll welding between the lower end and the valve stem assembly, and automatic roll welding between the upper end and the connecting plate, forming a metal barrier between the fluid medium and the atmosphere to ensure zero leakage of the valve stem.

2、 Technical parameters of imported bellows gate valve:

Nominal diameter: DN 15-dn 350

Nominal pressure: 1.6mpa-6.4mpa

Applicable temperature: - 30 ℃ ~ 425 ℃

Applicable media: water, oil and steam

Body material: cast steel, carbon steel, stainless steel

Connection mode: flange connection

3、 Working principle of imported bellows gate valve:

The imported bellows gate valve is a gate with opening and closing parts, which is mainly used to cut off the medium in the pipeline. It can be used for full opening or full closing of different media, but it can not be used for throttling. The utility model has the advantages of small fluid resistance and small torque required for opening and closing; The flow direction of the medium is not limited, and can be used in the loop network pipeline where the medium flows in two directions. The length of the structure is relatively small, which is conducive to pipeline installation. In particular, the valve is designed for graphite and bellows double sealing, which makes the sealing performance more superior to ordinary gate valve and greatly increases the service life of the valve.

4、 Performance characteristics of imported bellows gate valve:

1. The fluid resistance is large, and the force required for opening and closing is large;

2. It is not suitable for medium with particles, high viscosity and easy to coking;

3. The regulation performance is poor. The types of bellows gate valve are divided into external thread type and internal thread type according to the position of stem thread. According to the flow direction of the medium, there are straight through type, direct current type and angle type. According to the sealing form of globe valve, there are packing seal globe valve and bellows seal globe valve.