气动在线取样阀、气动定量取样阀解决了现有取样阀的复杂结构，气动在线取样阀可实现现场及远程无压取样。
The pneumatic on-line sampling valve and pneumatic quantitative sampling valve solve the complex structure of the existing sampling valve. The pneumatic on-line sampling valve can realize on-site and remote pressureless sampling.