Hi Lee
Are you looking to use one of these as a delivery pump to a pole on a WFP system? If you are I wouldnt use it. Yes it has a high flow rate, probably a bit too high and that 45 PSI cut off will be a real pain. Personally I would look at getting a Shurflo.. minimum 60 PSI. This will give you decent pressure at a lower flow rate and can also have a Varistream or Eco flow fitted if you need it.
As to your original question. I haven't used one like this so can only advise you as above.
Cheers
Andrew