Việt
van chính
van tổng
Anh
king valve
master valve
Đức
Hauptabsperrventil
Pháp
robinet chef
robinet général
king valve,master valve /ENG-MECHANICAL/
[DE] Hauptabsperrventil
[EN] king valve; master valve
[FR] robinet chef; robinet général
King valve
o van chính