I nā'ōlelo o ka hanaʻokiʻoki maʻalahi, keʻano o ka hanaʻana o ka valve i loko o ka mīkini ma waena o nā'āpana ma waena o nā'āpana ma waena o nā'āpana . ^. ʻO ke kolamu a me nā'āpana e pāʻani ai i ka hana o ka hōʻailona i kapaʻiaʻo ia i kapaʻia a hōʻailona paha, e kapaʻia nā ana no ka pōkole. ʻO nā papa e pili ana i nā sila a me nā pāʻani a pāʻani i ke kuleana o ke kaʻaila i kapaʻiaʻo nā papa kiʻekiʻe.

ʻO ka papa hōʻailona o ka Valve ka mea i loaʻa i ka'āpana o ka Valve, a hiki i kona mau wahi leki, ka leakage o ka nohoʻana o ke kaulahao, ka leakage o ka papa OFF a me ka leakage o nā mea'ē aʻe i hoʻopiliʻia ma waena o nā papa hōʻailona. ʻO kekahi o nā Vallent nui loa i hoʻohanaʻia ma ka pipeline a me nā mea hana e hōʻoki ai i ke kahe o keʻano o ka medium. No laila,ʻo kona paʻa ka mea nui ka mea nui e hoʻoholo ai inā hele mai ka lekage kūloko. ʻO ka papa inoaʻo Valve e hele nei i kaʻaoʻao o ka papa o nā papa e hōʻailona ai, hoʻokahi ma ke kino valve a me nā mea'ē aʻe ma keʻano Valve