我厂曾生产一种煤气调节旋塞,属于低压阀门类,其使用压力为9.8×10~3Pa(0.1工程大气压)泄漏量为19.6Pa/min(2mmH_2O/min)对于这种气密性要求较高的旋塞密封测试,一般厂家均用水封法,就是以冒泡多少来确定漏气量,用此法因记数不清而测不准。这里介绍一种简易的测试方法,即用直观水位变动法 Our factory has produced a gas control cocks, belonging to the low-pressure valve category, the use of pressure 9.8 × 10 ~ 3Pa (0.1 engineering atmospheric pressure) leakage of 19.6Pa / min (2mmH_2O / min) for the tightness of this higher Of the plug seal test, the general manufacturers are using water seal method, is to determine how much bubbling bubble amount, with this method due to unknown count and inaccurate. Here is a simple test method, that is, using intuitive water level change method