He aha ka butterfly valve?
1. Introduction Ua ʻike nui ʻia nā valve Butterfly no ko lākou pono, Kākoʻo Hoʻohālikelike, a me ka maikaʻi o ke kumukūʻai i ka hoʻomalu ʻana i ke kahe wai ma nā ʻano like ʻole […]
He aha ka butterfly valve? Kuanui hou aku »









