Introduction to Common Valve Connection Methods and Installation Methods

Introduction to Common 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.