Pin-type valve diameter issue
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I would like to ask everyone: when designing sampling pipelines, dual valves are used, with a ball valve followed by a needle valve. If the front ball valve has a DN15 size, what size should the needle valve at the back be?
DN10 will do; there aren’t enough characters. There aren’t enough characters. There aren’t enough characters. There aren’t enough characters. There aren’t enough characters. There aren’t enough characters. There aren’t enough characters