For ordinary gate valves of DN400 and above, what pressure difference across the valve makes it difficult to open?
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For ordinary gate valves of DN400 and above, what pressure difference across the valve makes it difficult to open? Some wise person who can give some guidance! :)
For a regular gate valve of DN400, such a large valve isn’t really used for frequent opening and closing; if frequent operation is required, it’s better to use a pneumatic or electric version.
Can a large F wrench be used? :victory:
A worm gear structure will do. :lol
Manual? Just install a cylinder; a 400 model is fine. We have worked with larger ones as well, and given the high pressure difference, a cylinder is definitely necessary. It’s too laborious to do manually