Hāpai i ka valve nānā 2500lbs  no nā kiwikā nānā kiʻekiʻe liʻiliʻi, i hana ʻia e ke kila forged. hana maʻamau mākou iā lākou i loko o ka kiwikā nānā swing, piston check valve (lift check valve).Loaʻa i ʻekolu mau hoʻolālā pāpale. ʻO ka hoʻolālā mua ka Bolted Bonnet, me ka hui kāne-wahine, gasket ʻōwili wili, i hana ʻia ma F316L/graphite. Loaʻa pū kekahi gasket hui apo ma ke noi. ʻO ka lua o ka hoʻolālā, ʻo ia ka pāpale i hoʻopaʻa ʻia, me kahi hui i hoʻopaʻa ʻia me ke kaula a me ka sila. Ma ke noi, loaʻa kahi hui i hoʻopaʻa ʻia me ka ikaika komo piha, ʻo ka hoʻolālā hope loa ka pāpale sila kaomi, ʻo ia ka hoʻolālā no nā kiwikā kaomi kiʻekiʻe.