valve guard meaning in Chinese

阀程限制片
阀挡,阀片升程限制器,阀柱护套
阀档板
阀门挡板
阀箱；阀限位器
阀行程限制器阀杆护套
阀柱护套

Delivery valve guard
吐出阀限位器
Suction valve guard
吸入阀限位器
Transportable gas cylinders - valve protection caps and valve guards for industrial and medical gas cylinders - design , construction and tests
气瓶.工业和医用气瓶的阀保护帽和阀罩
Transportable gas cylinders - valve protection caps and valve guards for industrial and medical gas cylinders - design , construction and tests
可运输的气体瓶.工业和医用气体瓶的阀门保护盖和阀门保护装置.设计,构造和试验
Transportable gas cylinders - valve protection caps and valve guards for industrial and medical gas cylinders - design , construction and tests included amendment a1 : 1999 a2 : 2000 ; german version en 962 : 1996 a1 : 1999 a2 : 2000
移动式气瓶.工业和医疗气体瓶的阀门保护帽和阀盖.设