Originally Posted by joe_bower
Thank your response. I am just curious why the pump cannot be a self priming diaphragm type?
I did repurpose a shurflo diaphragm pump from the deckwash as a temporary fix until the one from aliexpress arrived, it did work
but it was 20 times the price
, very noisy, cycled on and off every 3 seconds on the pressure switch, used way more power and has lots of moving parts
to wear out or fail, which it eventually did, so I then had to rebuild
A sealed magnetic drive centrifugal type like the original one is ideal, cheap
, reliable and will last an extremely long time if you don't let it run dry. It will KISS principle. Not sure what effect the constant fluctuations of input pressure from a diaphragm pump would have but it can't be good.
Check what pipe fittings it comes with, all options are available and it's a lot less hassle if you can put your original hoses straight on it, most of them have smaller diameter or threaded fittings.