Hand wheel,lever and spanner driving and safety valve,pressure reducing valve,traps overleap this symbol.

1、手轮、手柄和扳手传动以及安全、、疏水省略代号。

Put forward remindful points for selection and application of steam stripping valve in design, so as to have long term and steady operation.

提出疏水和应用设计中应注意的问题,以便能够长期稳定地运行。