Valves used in polycrystalline silicon production equipment and amorphous silicon solar cell production equipment
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Urgent request: What types of valves are used in polycrystalline silicon production equipment and amorphous silicon solar thin-film cell production equipment? Through what media? Thank you! ! !
I have just worked on a polysilicon production facility, where the main types of valves include ball valves, control valves, ball valves for handling toxic media, and bellows-type control valves. Ball valves designed for toxic media and bellows ball valves are primarily used for handling chlorine-containing substances; the rest are ordinary valves that have undergone degreasing treatment. Additionally, metal-sealed, wear-resistant ball valves or disc valves are used for transporting silicon powder
Ball valves and bellows control valves are used quite frequently! This is because most polysilicon projects were launched in the past two years; some of these projects have been completed but not yet put into operation, so there isn’t much evidence to demonstrate their performance. It’s recommended to use imported brands. This post was last edited by bingyu252 on 2009-4-8 at 15:57
Use wear-resistant ball valves at the silicon powder location, oxygen purification valves at location H2, and Monel valves in areas containing chlorine atoms
In the projects we are working on, the control valves used include V-ball valves, single-seat valves, control disc valves, and control angle valves. There is a lot of debate regarding the use of V-ball valves for control purposes; in China, it is believed that cam-deflected valves are better, but the foreign technical specifications for this project do not allow any changes… It’s even not possible to replace the bellows – it’s absolutely crazy!