球形截止阀 meaning in English

ball check valve

Hydraulic ball cut - off valve for ships
船用液压球形截止阀
Industrial valves - steel globe and globe stop and check valves
工业用阀.钢制球形阀球形截止阀和止回阀
Specification for steel globe and globe stop and check valves flanged and butt - welding ends for the petroleum , petrochemical and allied industries
石油石化及有关工业用钢球形阀球形截止阀与单向阀