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Four-way valve

2020-05-19View Original

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I’m looking for information on the internal structure of the four-way valve used in delayed coking; videos explaining its working principle would be even better. Thank you to all the experienced professionals out there.
Reply #22020-05-19
Could you send a video so I can see what it looks like? Thanks! :)
Reply #32020-05-20
https://bbs.hcbbs.com/thread-983730-1-1.html
Reply #42020-10-20
How are the bellows connected to the valve seat and the end cover? Is it by welding? If not, how are these connections sealed, and how is the routine pressure test carried out?

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