AW series of large diameter valves using pneumatic actuator fork-type transmission, reasonable structure, output torque, a double-acting and single acting.
大口径阀门采用系列aw型气动执行器拔叉式传动，结构合理，输出扭矩大，有双作用式和单作用式。
2
Quarter turn, doubleacting and spring return type with a totally enclosed design and no external moving linkages.
四分之一转，双动和弹簧回位类型，具有全封闭结构，没有外部活动连接。
3
Control type: normally closed, normally open, doubleacting.