片语
Valve body & Bonnet[机] 阀体
valve cap[机] 阀盖
steam valve bonnet汽阀帽
control valve bonnet控制阀上阀盖
Install The Valve Bonnet安装阀盖
Valve body Bonnet灰铸铁
off valve bonnet断油阀帽
valve deck[机] 阀盖
valve bonnet seal阀盖密封
air cylinder valve bonnet气筒阀帽罩
regulating valve bonnet调节阀帽