According to media performance and the use of period and should always check the valve orifice at the top of the Ministry of PTFE seals and PTFE sheet.
根据介质性能及使用期，应经常检查阀体顶部四氟密封圈和孔板部的四氟薄片。
2
The metal elastic sealing sheet presses the pressure relief valve inside the pressure relief valve hole.
金属弹性封片将卸压阀卡压在卸压阀孔内。
3
Elaborates al sheet mill spray system, introduces mill spray control mechanism of electro-air proportional valve.