ari valve control lever 气阀控制杆

automatic ari valve 自动空气阀

ari slide valve 空气分配阀

ari cylinder valve 气筒阀

ari escape valve 泄气阀

ari control valve 空调阀

ari admission valve 进气阀

ari vent valve 气动调压阀

ari relay valve 空气中继阀