Why do you want to change to a stiffer hose and why do you think the vibrations will be expensive?

Great pumps are not normally too bad on the pulsation front. Normally you just need to ba able to clamp the tube at intervals to stop it moving.

All a bit vague.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

I attached a pic to better explain myself.
See the top plastic hose.

Best Regards
Roman Katz

• https://files.engineering.com/getfile.aspx?folder=4b0029c0-10ff-4907-a7d3-b

Is the existing pump-tube connection noisy?

Good Luck,
Latexman

Not Very noisy, but it bents and after some time the connections leak.

If the new tube is too stiff, it's because it has allot of metal so it will make a specific noise (like one frequency meets a different one), I know it from other places that I have this type of tube. I think it is called an "electric sequencing"

So balance is needed. I think a Compotech tube can work, just spoke to the supplier today.

Best Regards
Roman Katz

On your longest connection, include enough length for a loop of the hose. If the hose is tight, it transfers the vibrational displacements downsteam. A loop does a good job of breaking this up so the displacements are not transferred downstream. Some pump vendors recommend this practice.

Good Luck,
Latexman

Hi,
A longer flexible pipe will absorb the vibrations.
My view
Pierre