ʻO ka ʻO AWWA C515 Flange Type Ductile Iron Resilient Seated Gate Valve ua hana ʻia no ka lawelawe pani hilinaʻi i ka hoʻolako wai kūlanakauhale, ka mālama ʻana i ka wai ʻino, ka ʻōnaehana hoʻoinu wai, a me nā ʻōnaehana pale ahi. Hana ʻia e like me ke kūlana AWWA C515, hōʻike ka valve i kahi kino hao ductile ikaika kiʻekiʻe i hui pū ʻia me kahi wedge EPDM a i ʻole NBR resilient i hoʻopaʻa piha ʻia, e hōʻoiaʻiʻo ana i ka sila paʻa pehu a me ka torque hana haʻahaʻa.

ʻO kahi kiwikā puka noho paʻa he ʻano kiwikā i hoʻohana pinepine ʻia i nā ʻōnaehana hoʻolaha wai a me nā wai hoʻoneoneo e kāohi i ke kahe ʻana o ka wai a i ʻole nā ​​​​wai ʻē aʻe. ʻO ka hiʻohiʻona nui o kēia kiwikā ʻo ia kona noho paʻa, i hana pinepine ʻia me nā mea elastomeric e like me ka rubber a i ʻole nā ​​​​​​hui synthetic, i hoʻolālā ʻia e hāʻawi i kahi sila paʻa a ʻaʻohe leak ke pani ʻia ka kiwikā. Aia ka kiwikā i kahi puka (a i ʻole wedge) e neʻe i luna a i lalo i loko o ke kino kiwikā. Ke hāpai ʻia ka puka, ʻae ia i ka wai e hele ma waena o ka kiwikā, a i ka wā e hoʻohaʻahaʻa ʻia ai, sila ka puka i ka noho paʻa e ālai i ke kahe. Hōʻoia ka noho paʻa i kahi hana sila maikaʻi loa, ʻoiai i nā kūlana kahi e loaʻa ai nā hewa i loko o ke kino kiwikā a i ʻole ka puka. ʻIke ʻia nā kiwikā puka noho paʻa no ko lākou kūpaʻa, maʻalahi o ka hana, a me ka mālama haʻahaʻa. Hoʻohana pinepine ʻia lākou me ka lima me ka hoʻohana ʻana i kahi huila lima a i ʻole ma ke ʻano hana maʻalahi i nā ʻōnaehana paʻakikī.