How to choose a needle valve?
How to choose a needle valve?
Needle valve is a type of valve that can be precisely adjusted in pipeline systems. It is named needle valve because its valve core has a needle like shape. The biggest function of a needle valve is to cut off fluids, and its sealing performance is excellent, which can withstand very high pressures. Generally, needle valves are used in conjunction with pressure gauges.The main Needle Valve product names of China Needle Valve Network include:GMJ14F/H-250 High Sealing Sampling Valve,GMJ11F/H-25 High Sealing Sampling Valve,J21W/H Internal And External Pressure Gage Needle Valve,J43W/H Flange Needle Valve,JJ•BY1 Single Flange Pressure-taking Needle Valve,J61Y/W High Temperature and Pressure Needle Valve。
How should needle valves be selected? Needle valves come in various types depending on their manufacturing materials, usage environments, and other factors, which can lead to many problems when choosing needle valves. When used in pipeline systems or devices for low-temperature media, low-temperature needle valves with extension rods should be selected; In the chemical industry, due to the presence of corrosive media in pipeline systems and equipment, it is most suitable to choose a fully stainless steel needle valve with stainless steel as the main material and polytetrafluoroethylene as the valve seat sealing ring; In the presence of high-temperature media in pipeline systems and devices such as metallurgy, power, and petrochemicals, metal sealed needle valves are the most suitable choice; In the refining industry, due to the installation of catalytic or cracking units in pipelines, the most suitable choice is the lifting rod needle valve;
What should be noted when installing a needle valve? Needle valves are generally installed in pipeline systems to cut off fluid flow in the pipeline. So when installing, it is necessary to ensure that the needle valve is installed correctly. Attention should be paid to: 1. Before installing the needle valve, it is necessary to check whether the appearance of the needle valve is intact. Needle valves with certification must be installed to ensure compliance with national standards; 2、 The installation position, height, and inlet/outlet direction of the needle valve must meet the design requirements, and the direction of the arrow marked on the valve body should be consistent with the direction of the medium flow. The above is an introduction to needle valves, as well as some basic principles when selecting and using needle valves.
Do you still need to know or purchase the following Needle Valve products:
