ʻO ke kumu o ka valve 1. ʻO nā palena kumu o ka valve he: kaomi nominal PN a me ke anawaena nominal DN 2. ʻO ka hana maʻamau o ka valve: ʻoki i ke kikowaena pili, hoʻololi i ke kahe kahe, a hoʻololi i ke ala kahe 3, nā ala nui o ka valve ʻO ka pilina: flange, thread, welding, wafer 4, ka ...
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