Pump Flexible Coupling
Pump Flexible Coupling
(OP)
Is there a need for a pump to privide fexible expansion coupling in suction and its discharge. What are the parameters should I consider in providing this flexible coupling.Tnx
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RE: Pump Flexible Coupling
Generally, you do not want to place piping stress on the pump structure because the pump is not designed for external loads from the piping. The pipe should be supported independently from the pump.
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However, there may be some problem piping arrangements where flexible expansion joints may be helpful as noted in the attached article.
RE: Pump Flexible Coupling
RE: Pump Flexible Coupling
Mike Halloran
Pembroke Pines, FL, USA
RE: Pump Flexible Coupling
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Pump Flexible Coupling
The most effective use of a flexible pipe coupling is to anchor the end of the coupling closest to the item you want to protect.
If you want to protect the pump from movement of the piping, then anchor the end of the flexible coupling that is closest to the pump. This will allow the piping strain to be absorbed by the pipe coupling, but the flange on the pump side of that coupling is anchored, therefore no strain is being passed to the pump.
Should you desire to protect the piping from movement of the pump, the you must anchor the end of the flexible coupling closest to the piping. This will allow expansion of the pump flange to be absorbed by the pipe coupling, but the flange on the piping side of the coupling is anchored so that the strain is not passed to the piping.
Flexible couplings are not a cure for a poorly designed and installed pump system. A properly designed and installed pump system will not make a pump move wether there are flexible couplings installed or not.
Refer to the attached installation instructions.