The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respirationvalve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
2
When the new valve is started, before the installation, should remove quakeproof matters between the discs, otherwise the respiration will malfunction.
新阀启用时，安装前应清除阀盘间防震物，否则呼吸阀将失灵。
3
The utility model relates to a high pressure valve with respiration performance and air pressure indication. The high pressure valve is used on a pressure cooker.