replacing submersible fresh water tank pump.

Hello,
   Can anyone out there advise me on the correct model of  Shurflo pump I can fit in place of the submersible pump in my fresh water tank in my 2019 warwick xl please ? I have owned the van from new and  the pump & pressure switch arrangement as fitted  by Autosleepers  has never been that brilliant. I am now in the mind frame of fitting a better quality pump being a Shurflo unit of which were always very efficient in my previous vans.Your suggestions & advice would be greatly appreciated.

Many thanks 

Steve (Worcestershire)

Shurflo trail king 7ltr 20psi will do the job nicely. Use search on top left for shurflo pump and you will find plenty of posts on this subject. There is also a factsheet covering carrying out this mod under he fact sheet heading. 
As you have recently joined forum welcome, would be nice to have an introduction under new members .

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