This results in an unbalanced condition which allows the main line pressure to lift the diaphragm off the main orifice and, thereby, open the valve.
在一个不平衡的状况，允许为主线的压力，解除了主要的孔隔膜，从而打开阀门这个结果。
2
The application and working process of throttle valve in injection mold of unbalanced cavities were introduced, and the key points of designing throttle valve was analysed.