Stainless steel metal hard seal ball valve is designed for medium temperature higher than 300 ℃ the industrial and mining conditions of designed, use a metal to metal seating, sealing situation with high temperature resistance, wear resistance, fire prevention, anti-static and other advantages, can choose the floating ball valve or fixed ball valve structure. High-pressure solid sealed stainless steel ball valve evolved by the cock, its opening and closing as a sphere, the exercise of a sphere around the axis of the stem rotate 90 degrees to the realization of the aim of opening and closing. Q41Y stainless steel metal hard seal ball valve important selection principle and advantage of important for stainless steel ball valve in the line cut off, distribution, and change the flow direction of medium, designed to open V of the stainless steel ball valve but also has good flow regulating function. Stainless steel ball valve is not only simple structure, good sealing performance, and in certain range of nominal diameter smaller volume, light weight, less material consumption, installation size is small, and the drive torque is small, easy to operate, easy to achieve rapid opening and closing of chengdu personnel examination, is one of the fastest growing valves varieties in last decade. Is particularly in the United States, Japan, Germany, France, Italy, and west, Britain and other developed countries, especially is very widely used stainless steel ball valves, using varieties and quantity is still in inherit and expand, and to high temperature and high pressure, big, high sealing, long service life, good regulation performance, and a multifunctional direction valve, its reliability and other performance indicators have reached a higher level, and has set up a part of some gate valve, cut-off valve, throttle valve. As the stainless steel ball valve technology, in the foreseeable within short time see, particularly is in oil pipe line nature, refining cracking on the assembly and the nuclear industry will have a wider range of application. In addition, large diameter and low pressure in other industrial areas of membrane structure bike shed sichuan personnel test web page, stainless steel ball valve will also become one of the leading valve type. Stainless steel ball valve's principle of work is to rely on to make the valve stem smooth or occlusion. Q41Y stainless steel metal hard seal ball valve features important used for cutting stainless steel ball valve in the line, distribution, and change the flow direction of medium. Fluid resistance is small, the resistance coefficient and commensurate with the length of the pipe section. Simple structure, small volume, light weight. Compact and reliable, the stainless steel ball valve sealing surface material widely used plastic, sealing good, also has been widely used in the vacuum system. Easy operation, quick opening and closing, from open to close just rotate 90 °, is advantageous for the remote control. Easy maintenance, stainless steel ball valve has simple structure, sealing ring as usual is in motion, remove the replacement is more convenient. In full open or full close, sphere and valve seat sealing surface and the dielectric isolation, medium through, does not cause the valve sealing surface erosion. Applicability is wide and size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied. Stainless steel ball valve has been widely used in petroleum, chemical, gas, water supply and drainage, food, pharmaceutical, power, papermaking, urban construction, mining, municipal, boiler steam system. Q41Y stainless steel metal hard seal ball valve benefits: 1, has the lowest flow resistance ( The reality is zero) 。 2, because not stuck at work ( In the absence of lubricant) , so it can be reliably applied with the corrosive medium and low boiling point liquid. 3, in the earth pressure and temperature range, and can achieve completely sealed. 4, which can realize the rapid opening and closing, some of the structure of the opening and closing time is only 0. 05 ~ 0. 1 s to ensure that can be used to test the active in the system. Quick opening and closing the valve network marketing, no impact on the operation. 5, ball close to active positioning in position. 6, working medium on the double sealing is reliable. 7, in the full open and full closed, the ball and seat sealing surface and the dielectric isolation, so the media does not cause across the valve sealing surface erosion. 8, compact structure, light weight, can be thought of when it is used for low temperature medium system of the reasonable structure of the valve. 9, body symmetry, especially welding body structure, well under stress from the pipe. 10, closing can withstand the closed high-pressure difference. Q41Y metal hard seal ball valve of stainless steel important selection principles: 1, director of oil, natural gas transmission line, necessary cleaning the pipeline, and to be buried in the ground, use full size, full welded structure of stainless steel ball valve; Buried in the ground, choose the full size of welding connection or flange connection of the stainless steel ball valve; Branch, choose flange connection, welding connection, full size or reducing stainless steel ball valve. 2, products oil pipeline and storage equipment, selects the flange connection of the stainless steel ball valve. 3, city gas and natural gas pipelines, selection of flange connection and internal thread connection of floating stainless steel ball valve. 4 in the oxygen in the pipeline system, metallurgy system, appropriate chooses an ordeal degreasing process, fixed ball stainless steel ball valve flange connection. 5, the pipeline system and assembly of medium to low temperature, appropriate chooses combined with low temperature stainless steel ball valve bonnet. 6, the catalytic cracking assembly process of the refining pipeline system, can choose lifting lever type stainless steel ball valve. 7, the chemical industry system of acid and alkali corrosive medium, such as assembly and pipeline system, appropriate chooses of austenitic stainless steel and ptfe seat sealing all stainless steel stainless steel ball valve. 8, metallurgical system, electric power system, petrochemical assembly, city heating system of the piping system or assembly of medium to high temperature, can choose a metal to metal sealed stainless steel ball valve. 9, the need for flow control, can choose the worm gear and worm drive, pneumatic or electric with v-shaped opening regulation of stainless steel ball Industrial Valves.
cast iron valve resilient wedge gate valve is generally used to y gate valve.
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