Centrifugal pump-mechanical run test withoutout mechanical seal
Centrifugal pump-mechanical run test withoutout mechanical seal
(OP)
Hi!
What are the consequences if mechanical run test is carried out without the mechanical seal?
What are the consequences if mechanical run test is carried out without the mechanical seal?





RE: Centrifugal pump-mechanical run test withoutout mechanical seal
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: Centrifugal pump-mechanical run test withoutout mechanical seal
So long as there is some sort of seal you'll be ok, but no seal and fluid will pour out of the shaft....
The mechanical test will not be affected if the seal used is not the final one. Seals are intended to be replaceable so fitting later is not an issue. I've seen this before when the test loop is a bit dirty and the seal very expensive and only meant to be used on clean fluid.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Centrifugal pump-mechanical run test withoutout mechanical seal
So the consequence is you could pass vibration with packing, but fail vibration with a mechanical seal. It could hide a possible wear ring rub as well (might rub with a seal, but not with packing.)
RE: Centrifugal pump-mechanical run test withoutout mechanical seal
Recommendable is that your run test will be with lab mechanical seal.
There is another tests for Job mechanical seal.