In People's Daily life, there will be a stainless steel ball valve, but it is when to start? In the early 1880 s, when the United States because of the lack of appropriate limits the development of stainless steel ball valve sealing ring material, make it failed to become a formal industrial products. Until the 50 s of this century, the emergence of ptfe elastic sealing material such as to make it produce and development of the transfer; Also because of the development of machine tool industry, make the ball processing technology to improve, to achieve a sphere the required dimensional accuracy and surface roughness. At present, the maximum nominal size has 3050 MRN, a four ball valve, pump station provided for turbine export cut-off valve, pressure of 4. 8MPa。 Ball valve of the maximum working pressure has reached 72 MPa, the corresponding temperature up to 1000 c. Stainless steel ball valve not only widely used in general industrial piping, is widely used in petroleum, chemical industry, power generation, aviation, rockets, paper making, atomic energy and other departments, and liquid oxygen and liquid hydrogen in the nuclear industry, aerospace industry widely used on the pipeline. Its characteristic is: corrosion resistance, light weight, put this low. On the waterways, chemical pipeline into more and more widely used. Ball valve size is 6 inch plastic and are characterized by high strength, excellent heat resistance and corrosion resistance, applicable temperature is less than 250 degrees. Large diameter oil ( Or natural gas) Pipeline is an important aspect of a ball valve. Nominal diameter range: 600 - 1400 mm, working pressure is usually 8. 0 mpa, to ensure safety of some factory agent according to the operating characteristics of pipeline ball valve and it is affected by the natural conditions, for the bending test of resistance, resistance to climatic conditions of the comprehensive experiment, to prevent the fire spread, emergency cut-off test and so on. Thank you for visit our website' www。 quanlivalve。 com】 , if you have any questions, you can call us, we will be dedicated to provide you with quality services. The factory provides professional ball valve, butterfly valve, gate Industrial Valves, globe valve, check valve, relief valve, safety valve, Marine valve, oil valve, hydraulic control valves and other kinds of valves.
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