ball and seat valve 球形止回阀
ball resolver valve seat 球形分解器阀座
ball-and-dish seat type valve 球及球座型阀
gas valve valve seat 气门-门座
Valve-valve seat 气门-气门座
3-way ball valve 三通球阀
allwelded ball valve 全焊接球阀
aluminium ball valve 铝球阀
antidetonation electric control pneumatic switch ball valve 防爆电控气动开关球阀
automatic ball valve 自动球阀; 分子识别技术; 自重球阀
ball seat 球形阀座; 密封圈; 球座; 等离子显示屏
ball valve 球旋塞; 球阀; 糊钻; 浮球阀; 漂子门; 球形阀; 伸长; 波阀; 夹具; 延迟焦化装置; 球型阀; 球形阀门
ball valve assembly 球阀总成
ball valve oiler 球阀油杯; 球状阀注油器; 球阀注油器
ball valve sample chamber 球阀取样器
ball valve′s seal structure 球阀密封结构
Ball-valve 球阀
bellows seal ball valve 波纹管球阀
BQ type double eccentric center half-ball Valve BQ型双偏心半球阀