Because it is in the hot working environment, gas valve rod shape may be deformed.

由于是在炙热的环境下工作，气阀门杆的外形有可能会变形。

A packing sealing structure is arranged between the valve rod and the upper end of the valve body.

在阀杆与阀体的上端部之间设置填料密封结构。

Valve rod seal packing can adopt lip shape structure, seal up dependable, Operates moment of force small.

阀杆密封填料可采用唇形结构，密封可靠、操作力矩小。

The valve rod (steel 35) is nitrided in the fluid soft nitriding process, the main material being made up of urea.

采用以尿素为主要原料的液体软氨化工艺，对阀杆(35钢)进行了氮化处理。

The elastic sealing element can seal the valve rod and the valve seat when pressure in the cooker is started to be increased.

由于阀座下部设有弹性密封件，在压力锅上气后，弹性密封件密封阀杆和阀座。