ʻO ka valve maʻamau ʻole he ʻano valve me ka ʻole o nā kūlana hana.Hoʻonohonoho kūikawā ʻia kāna mau ʻāpana hana a me nā ana e like me nā koi kaʻina.Hiki ke hoʻolālā ʻia a hoʻololi manuahi ʻole me ka hoʻopilikia ʻole i ka hana a me ka palekana.Eia nō naʻe, ke hahai nei ke kaʻina hana machining i nā ʻōlelo kūpono o ke kūlana aupuni.

Pono e noʻonoʻo ka hoʻolālā ʻana o nā valve maʻamau i ka rationality a me ka hiki mai ka holoʻokoʻa.Ma waho aʻe o ka hilinaʻi ʻana i nā manaʻo kuʻuna, pono nō hoʻi ka hoʻolālā ʻana i ka noiʻi hou a me ka hoʻomohala ʻana.No laila, maʻamau, aia nā elites i ka ʻoihana e hoʻopau i nā hana like, a e hāʻawi nā ʻenekinia i nā kiʻi ma hope o ka pau ʻana o ka hoʻolālā.

Hoʻokaʻawale ʻia nā ʻano o nā valve non-standard i loko o ka sege valve series (penstock gate a me flap valve) a me ka metallurgical valve series (ventilation butterfly valve, slide gate valve, goggle valve, ash discharging valve, etc.)

1. Pūnaehana valve sewage

2. Metallurgical valve moʻo