Gas ball valve is used with a round ball channel as open-close part, a sphere with the valve rod rotation realize on-off movement. ball valve. Suitable for operation, often opening and closing fast, lightweight. Fluid resistance is small. Simple structure, relatively small volume, light weight, easy to maintenance. Good seal performance is not limited by the installation direction, the flow of medium can be arbitrary. No vibration, low noise. Gas ball valve adopts forming ptfe packing, widely used in natural gas, liquefied petroleum gas, liquefied petroleum gas (LPG) pipeline installation, etc. Its general after valve used for tables. Applies to most of the high pressure gas supply situation, smooth handle operation torque, O ring to prevent foreign matter into the internal valve. And keep the valve sealing performance for a long time, is more than 6 ball valve adopts worm gear drive. Gas ball valve can also be applied to light structure, low pressure cut-off ( Small pressure difference) , corrosive medium in the pipeline system. Flange full welded ball valve in the low temperature ( Cryogenic) And also can choose ball valve in the pipeline system. Oxygen piping system in metallurgical industry, the need to use strict degreasing process of ball Industrial Valves. Mains in the pipeline and gas transmission pipeline should be buried in the ground, the need to use full size welded ball valve. When in requires regulation performance, need to choose the special structure of ball valve with v-shaped opening. In the petroleum, petrochemical, chemical, electric power, city construction, the working temperature above 200 degrees of the piping system can choose gas welding ball valve. And as a result of the gas ball valve seat sealing usually adopt plastic, the check on the structure and performance of the gas ball valve, want to consider the refractory of ball Industrial Valves and fire prevention, especially in petroleum, chemical industry, metallurgy and other departments, the equipment and piping system of inflammable, explosive medium used in ball valve, more should pay attention to fire and fire prevention. Gas ball valve can be divided into the form of the structure, floating ball valve, ball valve, elastic ball valve and oil seal ball valve; Can according to the channel can be divided into straight type, Angle type and three general formula, etc. , can be divided into the t-shaped and l-shaped three-pass two kinds. According to the connection work can be divided into the thread connection, flange connection and welding type 3 kinds. This article by all standing valve ( Technology department) Editing and publishing
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