There are different types of caravan water pumps that fit caravans. You will need to check in your touring caravan user manual to find the right pump for your caravan. One thing to bear in mind it can some times be dificult to get hold of a replacement pump when you are on holiday so its worth carrying a spare pump.
If you already have camping equipment that you have outgrown or are simply looking to upgrade to new- why not sell it on our classifieds section. Its free of charge - so you have nothing to lose.