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1·The air leak tester of GST-4000 is successfully designed according as the characteristics of Fuel Gas Stopcock and test demands.

的基础上，根据燃气具旋塞阀的具体特点及检测要求而开发的一款产品。

2·The air leak tester of AL-1000A belongs to differential pressure type. It is a high precision detecting transducers. It is much economical and widely applied to seal test of product parts.

1000A系列检漏仪采用差压法检测原理，是一款高精度的检测仪器，广泛应用于多种产品的密封性检测。

3·Where possible, the closed position should be determined by leak test using water or air, under low pressure.

如果可能的话，可以用水或空气，在低压状态下，对关闭状态进行测试，看看有没有泄漏。