自动平衡平滑阀 self-balanced flat slide valve ; match-box type flat slide valve ; balanced flat slide valve

平衡工平滑阀 match type flat slide valve

平座阀平滑阀闸阀 flat slide valve

平衡式平滑阀 match type flat slide valve

平衡滑阀 balance slide valve ; equilibrium slide valve ; balanced slide type valve

平板式滑动闸阀 slab type sliding gate valve

平板滑阀 linear action disk valve

明杆平行式双闸滑阀 rising-stem double-disk parallel slide valve ; disk parallel slide valve

车架水平调节滑阀 frame levelling valve spool