RJAOB
The compact 107 from AES has the advantage of being able to run many seals from 1 system and does not require a huge accumulator.
I have used these offshore with great success.
bustox
HF service requires either killed carbon steel or Monel metal to combat against corrosion. Edge welded metal bellows from any reputable seal manufacturer i.e. AES, Crane, Burgmann etc will not be available. Whilst you may use a plan 32, you risk assessment should cater for loosing the...
YOu mention drive end and non drive end, I am therefore assuming you are looking at a split case type pump.
I also also seen this happen on seals where the shaft is whirling or bent due to the hydrodynamic loads inflicted on the pump.
More movement on the inboard seals than the outboard seals...
guys
Thanks for all your posts. I think what I really need to do is put it to the customer and find out what they are willing to accept.
Many thanks once again for the time and effort taken to reply
Can anyone out there help.
I am in the process of designing some loop pipework to support a mechanical seal. The user has a preference for flanged pipework, however the pipework must terminate at a screw thread to enable it to be screwed into the seal.
I thought about using slip flanges to...
Milkboy
As part of our ATEX testing, we have basically dry run seals to see how much heat they generate to class them for T4, T3 etc.
As the ATEX rules have changed for mechanical seals, we now issue paperwork for seals allowing the user to do their own risk assesment. I would be happy to send...
Milkboy
I work for a seal manufacturer in the UK and we commonly use circlips of this thickness. From memory I think we machine them from stock materials rather than buying them.
The API Plan you are describing is 54. Alternatively it can also be classed as quench to drain.
You could recirculate the fluid back to the tank the supply pump is pumping from, however you will need to check the heat load on the seal and that the fluid wont boil due to being constantly...
Whilst edge welded bellows will handle the temperature, they are quite fragile if the temperature of the sulphur drops. They can be quite prone to fracture especially if you dont look after the heating side of the equipment.
I would recommend a pusher with Tungsten Carbide faces with either an...
Hi Milkboy
It could well do
I have installed two mechanical seals in identical pumps on a seawater service. The seals were Duplex with Tungsten faces.
We found that in one pump the seal faces were eaten away and on the other they were fine.
After investigation it turned out that the pump...