ʻO nā lola BSP (British Standard Pipe) a me nā lola NPT (National Pipe Thread) ʻelua mau pae maʻamau maʻamau, me kekahi mau ʻokoʻa nui:
- Nā Kūlana Kūlana a me ka Lahui
BSP Threads: ʻO kēia nā kūlana Pelekane, hoʻokumu ʻia a mālama ʻia e ka British Standards Institution (BSI). He 55 degere ko lākou a me ka ratio taper o 1:16. Hoʻohana nui ʻia nā kaula BSP ma ʻEulopa a me nā ʻāina Commonwealth, maʻamau i ka ʻoihana wai a me nā ʻenehana.
NPT Threads: ʻO kēia nā kūlana ʻAmelika, kūkulu ʻia a mālama ʻia e ka American National Standards Institute (ANSI) a me ka American Society of Mechanical Engineers (ASME). Loaʻa i nā lola NPT kahi kihi 60 degere a hele mai ma nā ʻano pololei (cylindrical) a me nā ʻano kikoʻī. ʻIke ʻia nā kaula NPT no kā lākou hana hoʻopaʻa ʻana maikaʻi a hoʻohana mau ʻia e lawe i nā wai, nā kinoea, ka mahu, a me nā wai hydraulic.
- Kaʻina Sila
Nā Uila BSP: Hoʻohana maʻamau lākou i nā mea holoi a i ʻole sealant e hoʻokō i ka sila.
NPT Threads: Hoʻolālā ʻia no ka hoʻopaʻa ʻana i ka metala-i-metal, ʻaʻole lākou e koi pinepine i ka sealant hou.
- Wahi noi
BSP Threads: Hoʻohana maʻamau ʻia ma UK, Australia, New Zealand, a me nā wahi ʻē aʻe.
NPT Threads: ʻOi aku ka maʻamau ma ʻAmelika Hui Pū ʻIa a me nā mākeke pili.
Nā Uila NPT:ʻO ka maʻamau ʻAmelika me kahi kihi thread 60-degere, hoʻohana mau ʻia ma ʻAmelika ʻĀkau a me nā ʻāpana ʻāpana ANSI.
Nā Uila BSP:ʻO ke kūlana Pelekane me kahi kihi 55-degree thread, maʻamau i hoʻohana ʻia ma ʻEulopa a me nā ʻāina Commonwealth.
Ka manawa hoʻouna: Mei-27-2024