flat valve
平座阀平滑阀闸阀 flat slide valve
平座阀闸阀 flat valve
自动平衡平座阀 self-balanced flat valve
平座密封阀 flat-sealed valve
双座平衡阀 double seat balanced valve
平面座阀 flat valve
双平衡阀座 Dual balance valve seat
喷油阀平座 flat seat fuel injection valve
折叠平面阀座 Fold Flat Seat
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