Introduction to Common ASCO Valve Connection Methods and Installation Methods

The common valve connection methods include flange connection, clamp connection, butt welding connection, threaded connection, sleeve connection, clamp connection, and self sealing connection.

Screw valves:

A simple connection method commonly used for small valves. This type of connection is usually made by machining the inlet and outlet ends of the valve into conical or straight pipe threads, which can be connected to conical pipe threaded joints or pipelines. Due to the possibility of large leakage channels in this connection, sealant, sealing tape, or adhesive can be used to block these channels. If the material of the valve body can be welded, but there is a significant difference in the coefficient of expansion, and the sales or working temperature range of valves sold by Nanjing Yunlian Electric Sales is large, the threaded connection must be sealed with honey welding

Valves with threaded connections are mainly valves with a nominal diameter of less than 50mm. If the diameter size is too large, it is very difficult to install and seal the connection part. In order to facilitate the installation and disassembly of threaded valves, pipe joints can be used at appropriate positions in the piping system. Valves with a nominal diameter below 50mm can use a pipe sleeve joint as a pipe joint, and the thread of the pipe sleeve joint connects the two connected parts together.

Flange valves:

Valves connected by flanges are commonly used connection forms in valves. Its installation and disassembly are relatively convenient. But compared to threaded valves, they are bulky and correspondingly expensive. Therefore, it is suitable for pipeline connections of various diameters and pressures.

However, when the temperature exceeds 350 degrees, due to the relaxation of bolts, gaskets, and flanges, the load on the bolts is significantly reduced. Nanjing Yunlian Electric - Sales Valve Sales may experience leakage in flange connections that are subjected to high stress.

Welding valves:

This type of connection is suitable for various pressures and temperatures, and is more reliable than flange connections when used under higher load conditions. The valve body structure is welded as a whole, and there will be no external leakage.

一般常见的阀门连接方式有：法兰连接、对夹连接、对焊连接、螺纹连接、卡套连接、卡箍连接、自密封连接等连接形式。



螺纹阀门：



一种简便的连接方法，常用于小阀门。这种连接通常是将阀门进出端部加工成锥管或直管螺纹，可使其连接到锥管螺纹接头或管路上。由于这种连接可能出现较大的泄漏沟道，故可用密封剂、密封胶带或埴料来堵塞这些沟道。如果阀体的材料是可以焊接的，但膨胀系数差异很大，南京云联电气-销售阀门销售或者工作温度的变化幅度范围较大，螺纹连接部必须进行蜜封焊



螺纹连接的阀门主要是公称通经在50mm以下的阀门。如果通径尺寸过大，连接部的安装和密封十分困难。为了便于安装和拆卸螺纹连接的阀门，在管路系统的适当位置上可用管接头。公称通径在50mm以下的阀门可使用管套节作为管接头，管套节的螺纹将连接的两部分连接在一起。

法兰阀门：



法兰连接的阀门，阀门中用得*多的连接形式。其安装和拆卸都比较方便。但是比螺纹连接的阀门笨重，相应价格也价高。故它适用于各种通径和压力的管道连接。



但是，当温度过350度时，由于螺栓、垫片和法兰一变松弛，也明显地降低螺栓的负荷，南京云联电气-销售阀门销售对受力很大的法兰连接可能产生泄漏。



焊接阀门：



这种连接适用于各种压力和温度，在较荷刻的条件下使用时，比法兰连接更为可靠。阀门阀体结构整体式焊接，不会有外部泄漏现象。