- empty and load valve
- 空重车: empty and load
- 转换: change; transform; convert; ...
- 阀: established house or power g ...
- 空重车转换塞门: empty and load change over cock; empty and load changeover cock
- 转换阀: change over valve; change valve; commutation value; conversion valve; cross valve; diverter valve; exchange-over valve; shift over valve; switch value; switch valve
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