Sawsan311
Chemical
- Jun 21, 2019
- 303
Dear All,
I am seeking your technical views on the requirement of providing two dissimilar check valves at centrifugal pump discharge despite knowing that these check valves are not internally inspected and hence are not qualified for overpressure protection. These check valves are located downstream the minimum flow recycle line connection. Do you agree that the primary reason for providing such check check valves (including non-slam type) is to protect from the reverse rotation of the pump's impeller and shaft after sudden shutdown and as a result of the inertia of the downstream system?
Thanks
regards,
I am seeking your technical views on the requirement of providing two dissimilar check valves at centrifugal pump discharge despite knowing that these check valves are not internally inspected and hence are not qualified for overpressure protection. These check valves are located downstream the minimum flow recycle line connection. Do you agree that the primary reason for providing such check check valves (including non-slam type) is to protect from the reverse rotation of the pump's impeller and shaft after sudden shutdown and as a result of the inertia of the downstream system?
Thanks
regards,