Kei te whakamahia te hua mō te throttling tutakina atu te rere o wai ha'iriiri ranei kore ha'iriiri gased, me āhua wai ranei.

Kei te whānui te tapo'i kuwaha whakamahia i roto i te wai tap, parakaingaki, hanga, hinu, ahumahi matū, kai, rongoā, pueru; mana, kaipuke, metallurgy

Check valve is a kind of valve whose opening and closing parts are round valve disc, which can block the reverse flow of medium by its own weight and medium pressure

Kei te whānui whakamahia te piha i roto i te adminstration terenga, Conservancy wai, maimoatanga parakaingaki etc

It is used in gas medium pipeline system of industrial and mining enterprises, municipal administration, environmental protection and other industries, especially suitable for absolute cut off of toxic, harmful and flammable gases.

Air damper is suitable for flue gas, dusty gas etc.