Under the condition of customers in the long-term use of stainless steel ball valve, learn to stainless steel ball valve maintenance operations, all standing Industrial Valves manufacturing co. , LTD. Today is for you to share. Stainless steel ball valve is a kind of commonly used valve instrument, mainly used for cutting, distribution, and change the flow direction of medium, has simple structure, small volume, light weight, small fluid resistance, easy maintenance, etc. Stainless steel ball valve in use need to be certain maintenance, can guarantee the normal operation of the stainless steel ball valve. Stainless steel ball valve how to maintain? Small make up today is to introduce specific stainless steel ball valve maintenance methods. Stainless steel ball valve maintenance operations: first: blank after finished product, after pickling, must want to rinse, if there is a sand hole or perforation, should use the argon arc welding gas shielded welding on it. Solid fusion processing and grinding, then; The second: the finished product, processing after the completion of the test. Should use add rust powder to wash water. Third: in the process of transportation as far as possible to pack the goods in wooden cases, not contact with metal products. Fourth: pipe after installation, regularly carries on the maintenance and maintenance, such as the stem out often with lubricating oil. Appropriate to open and close the valve several times. Make the ball, stem, sealing surface is not easy to assimilate. Stainless steel ball valves are reducing and generally not reducing channel two structures. No matter the structure, the flow resistance coefficient of ball valve is smaller. Especially the so-called full flow type, i. e. , not reducing ball Industrial Valves, due to its channel diameter equal to the inner diameter pipeline, local resistance loss only equivalent length of pipe friction resistance, namely in all valves, the ball valve minimum flow resistance. In rocket and its experimental system, the requirements of pipeline resistance as small as possible. There are two ways to reduce the resistance of piping system: one is to reduce the fluid velocity, therefore need to increase diameter and valve size, for the efficiency of pipeline system tends to produce adverse effect, especially for conveying system at low temperature ( Liquid hydrogen) Is very bad. ( 1) Reduce the local resistance of the valve, therefore, the ball valves have naturally become the best choice. ( 2) Ball Industrial Valves open/close switch quickly and conveniently. Since only the ball valve in the general case rotates 90 ° completes the fully open or close the action, it is easy to realize rapid opening and closing. 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 automation system. Quick opening and closing valves, no impact on the operation. ( 3) Ball valve sealing performance is good. The vast majority of ball valve seat is made of elastic material such as ptfe, sealing pair of metallic and non-metallic materials, often referred to as soft seal. In general, soft seal sealing easy to guarantee, and the machining accuracy and surface roughness on the surface of the sealing requirement is not high. ( 4) Ball valve long service life. Because ptfe have good self-lubrication, and sphere of friction and wear is small, and because the ball processing technology improvements, reduce roughness, thus improve the service life of the ball valve. Stainless steel ball valve it Ⅵ soft sealing seal leakage level for level, hard seal leakage level for Ⅳ. Usually the pipe for water and no room temperature should choose soft sealing ball valves, if conditions piping within the medium to high temperature or with a mixture of particles that must should choose hard sealing ball valves.
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