I loko o ka hale hana ʻo Jinbin, ua nānā ʻia ʻelima mau ʻāpana lele eccentric nui-nui. ʻO ko lākou mau ana he DN2200, a ua hana ʻia nā kino valve i ka hao ductile. Ua hoʻolako ʻia kēlā me kēia valve butterfly me kahi mea hana uila. I kēia manawa, ʻo kēia mau meakiwi leleua nānā ʻia a ʻae ʻia, a ke kali nei no ka hoʻopili ʻana a me ka hoʻouna ʻana.

ʻAʻole e like me nā valve lele lele concentric maʻamau (kahi e hui like ai ke kumu valve me ke kikowaena o ka pā butterfly a me ke kino valve) a i ʻole hoʻokahi eccentric flanged butterfly valve (kahi e hoʻokaʻawale ʻia ke kumu valve mai ke kikowaena o ka papa butterfly), ua hoʻohana ʻia nā kiwi lua eccentric butterfly i ka hoʻolālā ʻelua ʻano o "ke kumu o ka pahu waena o ka pahu waena o ka pahu waena e hoʻokaʻawale ana mai ke kikowaena waena o ka pā waena o ka pahu waena o ka pahu waena o ka pahu waena e hoʻokaʻawale ana mai ka waena waena o ka pā waena o ka pahu waena + kino valve”.

Hiki i kēia hale ke hoʻopili wale i ka pā peʻapeʻa me ka noho valve ke kokoke e pani i ka wā o ka wehe ʻana a me ka pani ʻana. I ke koena o ka hahau ʻana, ua hoʻokaʻawale loa ʻia ka papa peʻapeʻa mai ka noho valve, e hōʻemi nui ana i ka friction a me ka ʻaʻahu o ka ʻili hoʻopaʻa. ʻOi aku i nā hiʻohiʻona nui-diameter, hiki iā ia ke pale aku i ka "friction paʻakikī" ma ka ʻili hoʻopaʻa ʻia e ka paona ponoʻī o ka pā butterfly a i ʻole ke kaomi maʻamau, e hoʻolōʻihi i ke ola lawelawe o ka hui sila, ʻoi aku ka nui ma mua o 30% ʻoi aku ka lōʻihi ma mua o nā kiwi lele hao ductile hoʻokahi.

Hoʻohana ʻia ke ʻano hoʻolālā i hoʻolālā ʻia e ka papa peʻapeʻa o ka valve lele uila. Ke wehe piha ʻia, loaʻa i ka papa peʻapeʻa kahi wahi paʻa liʻiliʻi no ka waena a me kahi coefficient kūpaʻa kahe haʻahaʻa, hiki ke hōʻemi i ka nalowale o ka ikehu o ka ʻōnaehana pipeline. No nā paipu kahe nui me ke anawaena o DN1000 a ʻoi aʻe (e like me nā laina pahu wai o ke kūlanakauhale a me nā ʻōnaehana wai e hoʻoheheʻe ana i ka mana), ua mālama nui ʻia ka hoʻohana ʻana o ka ikehu o ka pauma.

Hiki ke koho ʻia ke kino o ka valve mai ka hao ductile (no ka wai kaona), ke kila kalapona (no ka ʻaila ʻoihana), a i ʻole ke kila kila (no ka media corrosive) e pili ana i nā ʻano o ke ʻano. Hiki ke hoʻopili ʻia ka ʻili o ka papa peʻapeʻa me kahi ʻāpana pale ʻaʻahu (e like me ka tungsten carbide), hiki ke pale aku i ka hoʻoheheʻe ʻia o ka media i loaʻa i kahi mea liʻiliʻi (e like me ke one a me ka slag). No ka lawe ʻana i nā wai i loko o nā haumia e like me ka lepo a me ka slurry lehu, ʻo kona ola lawelawe ʻo 2 a 3 mau manawa o nā pahu lele maʻamau.

ʻO ke anawaena nuilua pele eccentric valve, ma o ka hana hou ʻana, ua kaulike ka mana kahe, ka hana hoʻopaʻa ʻana a me ke ola hana o nā pipeline nui-diameter. Ua lilo ia i mea hoʻoponopono kūpono no ka hoʻololi ʻana i nā ʻīpuka kuʻuna maʻamau a me nā kiwi pōpō i nā ʻōnaehana kiʻekiʻe a me nā ʻōnaehana paʻakikī i ke kaona, ka mana, ka mālama wai, ka ʻoihana a me nā māla ʻē aʻe. He kūpono loa ia no nā hiʻohiʻona hana lōʻihi e pili ana i ka hoʻohana ʻana i ka ikehu a me nā kumukūʻai mālama.