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Axial Expansion Joint 1
- Thread starter B.L.Smith
- Start date
You would have to be more specific about your understanding.
That said, the words 'expansion joint' and 'offset' are enough to send a chill down the spine of every older generation piping engineer. It is precisely the cause of the Flixborough disaster which killed (I think) 29 persons on site and destroyed and entire chemical complex.
As I recommended on another post today, just google 'Flixborough' for some sobering facts.
That said, the words 'expansion joint' and 'offset' are enough to send a chill down the spine of every older generation piping engineer. It is precisely the cause of the Flixborough disaster which killed (I think) 29 persons on site and destroyed and entire chemical complex.
As I recommended on another post today, just google 'Flixborough' for some sobering facts.
- Thread starter
- #3
Thanks C2it
See attached file. In the attached file there is a rubber expansion joint with limit rods(axial expansion joint) that is installed in a line with a offset or similar installation. But as we know this installation is not correct. What is the reason for the installation?
See attached file. In the attached file there is a rubber expansion joint with limit rods(axial expansion joint) that is installed in a line with a offset or similar installation. But as we know this installation is not correct. What is the reason for the installation?
Brad,
The installation is clearly low pressure, probably water. The pump type is not susceptible to misalignment due to pipe loads and if it's water, there will be no expansion problems.
It is common in water applications to place a rubber joint such as shown (usually with tie-bars) on pumps to limit noise transmission and to allow for a certain amount of misalignment.
The installation is clearly low pressure, probably water. The pump type is not susceptible to misalignment due to pipe loads and if it's water, there will be no expansion problems.
It is common in water applications to place a rubber joint such as shown (usually with tie-bars) on pumps to limit noise transmission and to allow for a certain amount of misalignment.
- Thread starter
- #5
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1
- #6
The EJ on the pump nozzle looks long enough to have some lateral capacity, but the geometry and support pretty well guarantees that there will be negigable lateral movement, other than any installation inaccuracy.
Actual allowed lateral movement would be available from the vendor.
Actual allowed lateral movement would be available from the vendor.
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