Hoʻokomo ʻia ma ka hopena o ka paipu hoʻokahe wai, ʻo ka hana a ka flap valve e pale aku i ka hoʻopiha hou ʻana o ka wai o waho. ʻO ka flap valve he ʻehā ʻāpana nui: ka noho, ka papa valve, ke apo sila wai a me ka hinge. Ua māhele ʻia nā kinona i nā pōʻai a me nā huinahā.

. Nā hana hoʻokahe wai: Hoʻokahe wai mai nā lua wai o ke kapuahi mua, ʻaʻohe mea hoʻokahe wai hou aʻe

Ua hoʻokumu ʻia ʻo Tianjin Tanggu Jinbin Valve Co., Ltd. i ka makahiki 2004, me ke kapikala i hoʻopaʻa inoa ʻia he 113 miliona yuan, 156 mau limahana, 28 mau ʻelele kūʻai aku o Kina, e uhi ana i kahi ʻāpana o 20,000 mika kūlike i ka huina, a me 15,100 mika kūlike no nā hale hana a me nā keʻena. He mea hana kiwikā ia e komo ana i ka ʻoihana R&D, hana a me ke kūʻai aku, he ʻoihana hui-waihona e hoʻohui ana i ka ʻepekema, ka ʻoihana a me ke kālepa.

I kēia manawa, loaʻa i ka ʻoihana ka 3.5m vertical lathe, 2000mm * 4000mm mīkini wili a me nā lako hana nui ʻē aʻe, kahi mea hoʻāʻo hana valve multi-functional a me kahi moʻo o nā lako hoʻāʻo kūpono.