sow
Mechanical
- Nov 30, 2001
- 44
Hello,
Generally when a dry well vertical centrifugal pump (e.g. an immersible Flygt type sewage pump or a long shaft driven centrifugal) is installed it is common practice to install a air vent in or around the stuffing box area. I understand that this is to do with removing air away from the mechanical seals.
However this is impractical to do on submersible pumps, and to my knowledge is never done.
A few things that spring to mind are:
1) Is the air vent unnecessary on dry well vertical pumps?
2) If it is necessary on dry well pumps then why is it not needed on submersible pumps?
3) What special features do I need to look for in a submersible pump in order to prevent air build up or adverse effects of air build up around a mechanical seals?
Thanks
Generally when a dry well vertical centrifugal pump (e.g. an immersible Flygt type sewage pump or a long shaft driven centrifugal) is installed it is common practice to install a air vent in or around the stuffing box area. I understand that this is to do with removing air away from the mechanical seals.
However this is impractical to do on submersible pumps, and to my knowledge is never done.
A few things that spring to mind are:
1) Is the air vent unnecessary on dry well vertical pumps?
2) If it is necessary on dry well pumps then why is it not needed on submersible pumps?
3) What special features do I need to look for in a submersible pump in order to prevent air build up or adverse effects of air build up around a mechanical seals?
Thanks