三桿閥主要用于空氣分離裝置分子篩吸附系統中。
主要有以下優點：
1、閥板與閥座在開啟和關閉初始平移，密封面無摩擦，壽命長；
2、密封面垂直與管 道，有自清潔功能；
3、執行機構設定壓力，實現開啟壓差保護，避免高壓差氣流意外沖擊分子篩床層。
Three Lever valve are mainly used in the molecular sieve adsorption system of air separation plants.
Advantages are as follows:
1. During opening and closing stages, the initial movement of the valve disc is parallel from the valve seat. No friction on the sealing surface contributes to a long life;
2. The sealing surface is perpendicular to the pipe. It has then the selfcleaning function;
3. The actuator sets the pressure to achieve the Maximum Open Differential Pressure Protection function in order to prevent accidental impact of high pressure differential airflow on the molecular sieve bed.
