If Nobrot´s & Tony´s ideas do not interest you,then i suggest visiting "Clibergas" which is on the C12 on the left hand side as you travel from the corona roundabout out of Tortosa towards Aldover.There is a young guy who works in the office ,i think called Jordie (small goatee & bald head),who speaks good english (if you require that).He will give you all the advice on what type of pump you will need.They can then give you a price.  Good luck.