ʻO ke kūlana AWWA ka mea i paʻi mua ʻia e ka American Water Works Association i nā palapala kuʻikahi i ka makahiki 1908. I kēia lā, aia ma mua o 190 mau Kūlana AWWA. Mai ke kumu a i ka mālama ʻana, mai ka mālama ʻana a i ka hāʻawi ʻana, uhi nā Kūlana AWWA i nā huahana a me nā kaʻina hana e pili ana i nā wahi āpau o ka mālama ʻana a me ka hoʻolako ʻana i ka wai. ʻO AWWA C504 kekahi o nā ʻano maʻamau, he ʻano kiwikā pulelehua noho ʻōpala ia.
ʻElua ʻano o ka valve butterfly AWWA C504, midline line soft seal a me double eccentric soft seal, ma ke ʻano maʻamau, ʻoi aku ka haʻahaʻa o ke kumukūʻai o ka midline soft seal ma mua o ka double eccentric, ʻoiaʻiʻo, hana pinepine ʻia kēia e like me nā koi o nā mea kūʻai aku. ʻO ka maʻamau, ʻo ke kaomi hana no AWWA C504 he 125psi, 150psi, 250psi, a ʻo ka helu kaomi pili flange he CL125, CL150, CL250.
Hoʻohana nui ʻia ka valve butterfly AWWA C504 i nā papahana mālama wai, ʻo ka wai me ka ʻole o nā haumia ka mea e pono ai, ʻo nā ʻano o ka sila laholio e hoʻoikaika i ka hana sila o ka valve, i hiki ai i ka valve ke hoʻokō i ka 0 leakage. I ke koho ʻana i ka mea o ke kino valve, ʻo ka hao ductile ka mea nui, a ukali ʻia e ke kila kalapona. Loaʻa ke koho ʻana o ke apo sila disc valve, EPDM, NBR, NR, e like me nā koi o ka mea kūʻai aku e hana i kahi koho.
Ke hoʻohālikelike ʻia me nā kiwikā pepeke moʻo EN558-13,14, ʻoi aku ka mānoanoa o ke kino o ka kiwikā pepeke AWWA C504 a me ke koʻokoʻo mānoanoa, a he ʻokoʻa iki nō hoʻi i nā ana ʻē aʻe, hiki ke ʻike ʻia ma ka papa ana ma lalo nei. ʻOiaʻiʻo, no ka hana, ʻaʻohe ʻokoʻa nui me nā kiwikā pepeke ʻē aʻe i hoʻopaʻa ʻia i ka laholio.
He aha nā mea hana e hiki ke hana i ka AWWA C504 butterfly valve ma Kina? I koʻu ʻike, ʻaʻole nui nā mea hana e hiki ke hana i ka AWWA C504 butterfly valve, he nui nā hale hana i ʻike nui i ka hana ʻana i ka EN558-13/14 series butterfly valve, a ʻaʻohe nui o ka ʻike i ka hana ʻana i ka AWWA C504 butterfly valve, ʻo Tianjin Zhongfa Valve kekahi o nā mea hana e hiki ke hana i ka AWWA C504 butterfly valve, loaʻa iā Zhongfa Valve kāna ʻano ponoʻī a me kāna hale hana hana ponoʻī, hiki ke hoʻopau i ka hana ʻana o ka butterfly valve me ka maikaʻi a me ka nui.
Eia ka valve butterfly o AWWA C504 i hana ʻia e Tianjin Zhongfa Valve, Inā makemake ʻoe e ʻike hou aʻe e pili ana i nā huahana AWWA C504, hiki iā ʻoe ke hoʻokaʻaʻike mai iā mākou.
