Hoʻokomo ʻia ma ka ʻaoʻao o ka huelo o ka paipu hoʻoheheʻe, ʻo ka valve flap ka hana o ka pale ʻana i ka hoʻopiha wai o waho. Hoʻokumu ʻia ka valve flap i ʻehā mau ʻāpana: ka noho, ka pā valve, ke apo sila wai a me ka hinge. Hoʻokaʻawale ʻia nā ʻano i nā pōʻai a me nā ʻāpana.

. Kaʻina hoʻoheheʻe wai: ʻAʻohe wai hoʻoheheʻe mai nā pūnāwai hoʻoheheʻe mua

Ua hoʻokumu ʻia ʻo Tianjin Tanggu Jinbin Valve Co., Ltd. i ka makahiki 2004, me ke kapikala i hoʻopaʻa ʻia o 113 miliona yuan, 156 mau limahana, 28 mau mea kūʻai aku o Kina, e uhi ana i kahi o 20,000 square meters i ka huina, a me 15,100 square meters no nā hale hana a me nā keʻena.

Aia ka hui i kēia manawa he 3.5m vertical lathe, 2000mm * 4000mm boring and milling machine a me nā mea hana nui ʻē aʻe, multi-functional valve performance testing device a me kahi ʻano o nā lako hoʻāʻo kūpono.