Valves have been specified as Ballvalvetype, however the Contractor may offer an alternative recommendation, subject to approval by Client.
阀门类型规定为球阀,但承包商可提出不同建议,由业主批准。
2
A type of dual slots helix hoisting composite valve switch mechanism which is suitable for ball valves, butterfly valves and plug valves is introduced.
介绍了一种适用于球阀、蝶阀和旋塞阀双轨道旋转和升降复合动作的启闭结构。
3
It consists of pneumatic piston actuator and the composition of O-typeballvalve, valve core sphere using cylindrical hole.