Oil reducing valve belongs to the pilot valvepistonvalve.
进口油用减压阀属于先导活塞式减压阀。
2
The working process of the pneumatic valve was descried and the force on the valvepiston was analyzed. A design method about pneumatic valve is provided.
通过对气动阀工作过程的描述及对其阀芯的受力分析，提出了气动排污阀设计方法。
3
The utility model introduces a mechanism for guiding a valvepiston returning to central positions, belonging to the technical field of a servomotor with follow-up action.