Kūlana o PVC Ball Valve

Nā kūlana noʻO nā kiwi pōpō PVCuhi nui i nā mea he nui e like me nā mea waiwai, ka nui, ka hana, a me ka hoʻāʻo ʻana, e hōʻoia ana i ka hilinaʻi, ka lōʻihi, a me ka palekana o nā valves.
Pono ka mea maʻamau i ke kino valve e hoʻohana i nā mea PVC e pili ana i nā kūlana aupuni kūpono, e like me UPVC, CPVC, a i ʻole PVDF, me ka pale ʻana i ka corrosion maikaʻi a me nā waiwai mechanical; ʻO ka mea hoʻopaʻa i hoʻohana mau ʻia ʻo PTFE (polytetrafluoroethylene), ka mea e hāʻawi ai i ka hoʻopaʻa sila maikaʻi ʻana a me ka hana kūʻē ʻana i ka corrosion.

Aia i loko o ka ma'amau ka nui ke anawaena nominal o DN15 a DN200, e like me ka nui anawaena o waho e like me 33.7 millimeters no DN25 a me 114.3 millimeters no DN100. Kākoʻo ke ʻano hoʻohui i nā flanges, nā kaula waho, a i ʻole ka wiliwili kumu; Hoʻonohonoho ʻia ka palena liʻiliʻi e like me ka moʻo paipu, no ka laʻana, apōlele pōleleme ka anawaena o waho nominal o 20 millimeters pono e hoʻokō i ke koi o 206-266 square millimeters.

ʻO nā kūlana hana e kuhikuhi i kēlākiwi poepoePono e leak manuahi ma kahi kaomi i kuhikuhi ʻia (maʻamau ʻo 1.6Mpa a 4.0Mpa), hana maʻalahi a wehe koke a pani ʻia, a kūpono hoʻi i kahi mahana wela o -40 ° C a 95 ° C a i ʻole 140 ° C, kūpono me ka wai maʻemaʻe, ka lāʻau lapaʻau wai a me nā mea ʻē aʻe.