Stainless steel ball valves in the manufacturing process, it is very easy to contact with other metal iron products. The easiest way to keep stainless steel ball valves from rusting is to follow the process below. Next, let's take care of stainless steel ball valves.
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The process prevents stainless steel ball valves from rusting all the time.
There are two ways to reduce the resistance of the piping system.
The process prevents stainless steel ball valves from rusting all the time.
First, after the blank is finished, after pickling, it must be washed clean. If there are sand holes or perforations, it should be gas-shielded welding with argon arc welding. Then polishing, and then solid fusion treatment. Second, the finished product processing after the completion of the pressure test. It should be rinsed with water and added antirust powder. Third, in the process of transportation as far as possible use wooden packing, do not contact metal products. Fourth, after the installation of the pipeline, it is regularly maintained and maintained, such as the valve stem is often lubricated. Turn the stainless steel ball valves on and off several times as appropriate. Making the ball, stem, and sealing surface is not easy to assimilate.
There are two ways to reduce the resistance of the piping system.
Stainless steel ball valves generally have two kinds of structures: reduced diameter and non-reduced diameter channels. Whatever the structure, the flow resistance coefficient of stainless steel ball valves is relatively small. In particular, the so-called full flow type, that is, does not shrink the diameter of stainless steel ball valves, because its channel diameter is equal to the pipe diameter, local resistance loss only the same length of pipe friction resistance, that is, in all Valves, the flow resistance of this stainless steel ball valves is minimum. In the rocket launch and test system, the less resistance of the transmission pipe is required, the better. There are two ways to reduce the resistance of the pipeline system. One is to reduce the flow rate of the fluid. For this reason, the pipe diameter and valve diameter need to be increased.
(1) Reduce the local resistance of the valve, so stainless steel ball valves are naturally the best choice.
(2) Stainless steel ball valves open and close quickly, convenient. Since stainless steel ball valves can be fully opened or closed by turning the handle 90° under normal circumstances, it is easy to realize fast opening and closing. It can realize fast opening and closing, and the opening and closing time of some structures are only 0.05 ~ 0.1s, to ensure that it can be used in the automation system of the test bed. Quickly open and close the valve, operating without impact.
(3) Stainless steel ball valves have good sealing performance. Most of the seats of stainless steel ball valves are made of polytetrafluoroethylene and other elastic materials. The sealing pair composed of metal and non-metal materials are usually called the soft seal. Generally speaking, the tightness of the soft seal is easy to ensure, and the machining precision and surface roughness of the sealing surface is not very high requirements.
(4) Stainless steel ball valves have a long service life. Because PTFE has good self-lubrication, the friction and wear with the Ball are small, and because of the improvement of the ball processing process, the roughness is reduced, thus improving the service life of stainless steel ball valves.
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